UC Berkeley AUTOLAB http://bit.ly/AUTOLAB Dex-Net 2.0: Deep Learning to Plan Robust Grasps with Synthetic Point Clouds and Analytic Grasp Metrics. Jeffrey Mahler, Jacky Liang, Sherdil Niyaz, Michael Laskey, Richard Doan, Xinyu Liu, Juan Aparicio Ojea, Ken Goldberg UC Berkeley Contact: Ken Goldberg, [email protected] Jeff Mahler, [email protected] Paper Draft: https://arxiv.org/abs/1703.09312 To Appear: Robotics: Science and Systems (RSS) Conference, MIT, July 2017 To reduce data collection time for deep learning of robust robotic grasp plans, we explore training from a synthetic dataset of 6.7 million point clouds, grasps, and robust analytic grasp metrics generated from thousands of 3D models from Dex-Net 1.0 in randomized poses on a table. We use the resulting dataset, Dex-Net 2.0, to train a Grasp Quality Convolutional Neural Network (GQ-CNN) model that rapidly classifies grasps as robust from depth images and the position, angle, and height of the gripper above a table. Experiments with over 1,000 trials on an ABB YuMi comparing grasp planning methods on singulated objects suggest that a GQ-CNN trained with only synthetic data from Dex-Net 2.0 can be used to plan grasps in 0.8s with a success rate of 93% on eight known objects with adversarial geometry and is 3x faster than registering point clouds to a precomputed dataset of objects and indexing grasps. The GQ-CNN is also the highest performing method on a dataset of ten novel household objects, achieving 99% precision on test objects. Video by: Adriel Olmos, CITRIS Media http://bit.ly/2qkECr8 CITRIS and the Banatao Institute http://bit.ly/2qTM2EL
Views: 32032 CITRIS
Born with symbrachydactyly, eight-year-old Sophie doesn’t have fully developed finger bones in her left hand, but with the help of a CITRIS Invention Lab team, she is the new user of a 3-D printed super hand. For more info visit enablingthefuture.org Donate here - enablecommunityfoundation.org/donate Check out the CITRIS Invention Lab: www.youtube.com/watch?v=9Q1v4d3BOBU invent.citris-uc.org/ For the full story, visit: engineering.berkeley.edu/magazine Video by Adriel Olmos Music: Patchwork Friends, Hugo Hans
Views: 5079 CITRIS
Peter Norvig [Director of Research, Google] Abstract: Recent advances in Artificial Intelligence, and in Internet search, have been driven by the ability to build improved models from large amounts of data. This talk looks at the process of gathering and processing the data, building the models, and using them for new applications in language processing, computer vision, and other fields. Biography: Peter Norvig is a Fellow of the American Association for Artificial Intelligence and the Association for Computing Machinery. At Google Inc he was Director of Search Quality, responsible for the core web search algorithms from 2002-2005, and has been Director of Research from 2005 on. Previously he was the head of the Computational Sciences Division at NASA Ames Research Center, making him NASA's senior computer scientist. He received the NASA Exceptional Achievement Award in 2001. He has served as an assistant professor at the University of Southern California and a research faculty member at the University of California at Berkeley Computer Science Department, from which he received a Ph.D. in 1986 and the distinguished alumni award in 2006. He has over fifty publications in Computer Science, concentrating on Artificial Intelligence, Natural Language Processing and Software Engineering.
Views: 12118 CITRIS
Speaker/Performer: Jaron Lanier Sponsors: CITRIS (Ctr for Info Technology Research in the Interest of Society), Berkeley Center for New Media, CITRIS Data and Democracy Initiative Jaron Lanier's scientific interests include biomimetic information architectures, user interfaces, heterogeneous scientific simulations, advanced information systems for medicine, and computational approaches to the fundamentals of physics. He collaborates with a wide range of scientists in fields related to these interests. Lanier's name is also often associated with Virtual Reality research. He either coined or popularized the term 'Virtual Reality' and in the early 1980s founded VPL Research, the first company to sell VR products. In the late 1980s he led the team that developed the first implementations of multi-person virtual worlds using head mounted displays, for both local and wide area networks, as well as the first "avatars," or representations of users within such systems. While at VPL, he and his colleagues developed the first implementations of virtual reality applications in surgical simulation, vehicle interior prototyping, virtual sets for television production, and assorted other areas. He led the team that developed the first widely used software platform architecture for immersive virtual reality applications. Sun Microsystems acquired VPL's seminal portfolio of patents related to Virtual Reality and networked 3D graphics in 1999. From 1997 to 2001, Lanier was the Chief Scientist of Advanced Network and Services, which contained the Engineering Office of Internet2, and served as the Lead Scientist of the National Tele-immersion Initiative, a coalition of research universities studying advanced applications for Internet2. The Initiative demonstrated the first prototypes of tele-immersion in 2000 after a three-year development period. From 2001 to 2004 he was Visiting Scientist at Silicon Graphics Inc., where he developed solutions to core problems in telepresence and tele-immersion. He was Scholar at Large for Microsoft from 2006 to 2009, and Partner Architect at Microsoft Research from 2009 forward. Lanier has received honorary doctorates from the New Jersey Institute of Technology and Franklin and Marshall College, was the recipient of CMU's Watson award in 2001, was a finalist for the first Edge of Computation Award in 2005, and received a Lifetime Career Award from the IEEE in 2009 for contributions to Virtual Reality.
Views: 31870 CITRIS
Dexterity Network (Dex-Net): 4.0 Analytics, Stochastics, and Deep Learning for Robust Grasping of Generic Objects from Bins Dex-Net Project on Github: https://berkeleyautomation.github.io/... Building on several years of research (Dex-Net 1.0, 2.0, and 3.0), Dex-Net 4.0 introduces several innovations relevant to warehouse order fulfillment. * Mean Picks Per Hour (MPPH) as a Performance Metric. * Composite policies for a dual-arm robot that coordinates both suction grasp (single point) policies with parallel-jaw grasp (2 points) policies. * Use of high resolution 3D sensing. * Dex-Net Dashboard to display status. Music: "If I only had a heart" - Jesse Ruben
Views: 7690 CITRIS
CITRIS researchers have been given full access to the interfaces of the Raven Surgical Tele-Operation System which was designed, fabricated, and interfaced by Prof. Jacob Rosen at UCSC with Blake Hannaford at University of Washington. The researchers will apply statistical robot learning to acquire control policies based on example trajectories provided by human experts. A paper by team leaders Professors Pieter Abbeel and Kenneth Goldberg on the preliminary results won the Best Medical Robotics Paper at the prestigious IEEE International Conference on Robotics and Automation. Working with Doug Boyd from UC Davis, a world-class surgeon, they will implement a system and perform a series of experiments to establish significant proof of concept results for supervised tele-surgery. Find out more: http://citris-uc.org/research/projects/raven_surgical_robotic_system
Views: 4025 CITRIS
Speaker/Performer: Mario Paniccia, Director of Photonics Technology Lab, Intel Sponsor: CITRIS (Ctr for Information Technology Research in the Interest of Society), UC Berkeley (Headquarters), Research Exchange seminar Abstract: The silicon chip has been the mainstay of the electronics industry for the last 40 years and has revolutionized the way the world operates. Today a silicon chip the size of a fingernail contains over one billion transistors and has the computing power that only a decade ago would take up an entire room of servers. Recently silicon photonics has attracted a great deal of attention since it offers an opportunity for low cost opto-electronic solutions for applications ranging from telecommunications down to chip-to-chip interconnects as well as possible applications in new emerging areas such as optical sensing and or bio-medical applications. Recent advances and research breakthroughs in silicon photonic device performance over the last few years have shown that silicon can be considered as a material onto which one can build future optical devices. While significant efforts are needed to improve device performance and to "commercialize" these technologies, progress is moving at a rapid rate. If successful, silicon may similarly come to impact optical communications as it has impacted the electronics industry.
Views: 21942 CITRIS
Sudha Murty is an Indian social worker and an accomplished author. She is the chairperson of the Infosys Foundation and is known for her philanthropic work through the Infosys Foundation. Among other things, she has initiated a move to provide all government schools in Karnataka with computer and library facilities. An MTech in computer science, she teaches computer science to postgraduate students. A prolific writer in English and Kannada, she has written nine novels, four technical books, three travelogues, one collection of short stories and three collections of non-fiction pieces. Her books have been translated into all the major Indian languages and have sold over 150,000 copies. She was awarded the Padmashree in 2006.
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Miguel Altieri, PhD Miguel Altieri is a Professor at Berkeley's College of Natural Resources. His laboratory is involved in several field projects in California where they are testing ideas of landscape ecology applied to agriculture such as the use of biological corridrs in pest management. The idea is to explore whether corridors can break the nature of monocultures by serving as a conduit for the dispersion of natural enemies within the field thus enhancing thier impact on pest population. The effects of summer cover crops on insect pest populations and associated natural enemies is also being examined in vineyards. Of special interest is to determine whether timing mowing cover crops in alternate rows can force movement of beneficials to adjacent vines to exert pest suppression. His group is also engaged in collaborative work with a number of universities, NGOs and research centers in Africa, Asia and Latin America.
Views: 3006 CITRIS
Porous Silicon-based Lithium Ion Anodes for Secondary Batteries Speaker: Daniel Estrada, UC San Diego Enabling Technologies for the Next Generation of the Intelligent Energy Infrastructure Symposium November 6, 2014 – Sutardja Dai Hall, UC Berkeley
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Professor Moehle's current research interests include design and analysis of structural systems, with an emphasis on earthquake engineering, reinforced concrete construction, new and existing buildings and infrastructure, and development of professional design guidance.
Views: 10480 CITRIS
Vibration Energy Harvesting for Wireless Sensor Networks This is an i4Energy Seminar Speaker: Lindsay Miller, UC Berkeley Sponsors: CITRIS (Ctr for Info Technology Research in the Interest of Society), i4Energy Center Wireless sensor networks have huge potential to improve efficiency and quality of manufacturing operations, enable smart grid applications, and enable demand response/smart buildings, among other exciting applications. Ubiquitous sensor networks would allow two-way communication, real-time remote monitoring, and rapid response to changing conditions. Consider the difference between landline telephones and smart phones to imagine how wireless sensing networks might transform infrastructure, energy, and manufacturing. However, current wireless sensor nodes are expensive to maintain as batteries die and need to be replaced, and the nodes are often very difficult to install. Energy harvesting has the potential to resolve these issues and enable a stick-on, set it and forget it type of node. This talk will highlight the different types of energy harvesting research going on in our group, giving a brief overview of how each technology works and when it might be used. I will then focus in on piezoelectric vibration energy harvesting, which is the subject of my research. I will discuss experimental results of a MEMS harvester tested on machinery, optimization of the harvester, and integration of the energy harvester with energy storage. Finally, I will present a novel resonator design that is able to passively self-tune its frequency to match the input vibration.
Views: 24043 CITRIS
Speaker/Performer: Shmuel Oren, UC Berkeley Sponsor: CITRIS (Ctr for Info Technology Research in the Interest of Society) Part of the Spring 2011 i4Energy Seminar Series. Live broadcast at mms://media.citris.berkeley.edu/webcast. Questions can be sent via Yahoo IM to username: citrisevents. All talks may be viewed on our YouTube channel The schedule for the spring i4energy series is at http://www.citris-uc.org/events/i4energy-spring2011. Webviewing at UC Davis: 2022 Academic Surge Building Webviewing at UC Merced: SE1 100 Webviewing at UC Santa Cruz: SOE E2 Building, Room 506 Abstract: About 70% of electric energy consumed in the US is being supplied through regional transmission organizations managed by nonprofit independent system operators (ISO) regulated by the Federal Energy Regulatory Commission (FERC). The ISOs control the transmission grid and operate wholesale electricity markets through which energy, ancillary services and transmission rights are being procured. These markets are auction-based "smart markets" where procurement quantities and clearing prices are being determined by sophisticated optimization algorithms. This talk will provide an overview of the underlying methodology and scope of these markets and the risk management implications for market participants. I will also discuss the emerging challenges and opportunities for such markets presented by renewables penetration and the proliferation of smart grid technologies.
Views: 11641 CITRIS
Speaker/Performer: Vivek Subramanian, Professor, UC Berkeley Sponsor: CITRIS (Ctr for Information Technology Research in the Interest of Society), UC Berkeley (Headquarters), i4Energy seminar Abstract: In recent years, there has been significant interest in the applications of printed electronics for the realization of flexible displays, fully-printed RFID tags and embedded sensors. Printing of active circuitry is expected to enable a dramatic reduction in the overall cost of these systems, allowing for integration of electronic barcodes and product quality detection systems into consumer goods, as well as ushering in an era of low cost flexible displays and content delivery appliances. Printing techniques that have been considered range from high-speed commercial gravure printing through ultra-scaled inkjet printing. While many of the printing techniques under consideration have evolved from techniques already widely deployed in graphic arts applications, the requirements for printed electronics are in many ways dramatically different from those that exist for conventional graphic arts. In this talk, I will review the tremendous progress that has occurred in printed electronics over the last decade, and will discuss the challenges that remain. I will discuss the challenges associated with utilizing printing to realize printed semiconductor-based circuits. Additionally, I will overview the state of the art in printed electronic materials. I will review our work on developing materials, processes, devices, and circuit architectures for all-printed electronic systems including RFID tags, displays, and sensing systems.
Views: 18189 CITRIS
Speaker: Robert Budnitz, LBNL The talk will describe (technically, but in laymen's terms) what happened at the Fukushima reactors during and after the disastrous March 11 earthquake and tsunami, what the radioactive releases have been and what they mean, and what the path forward seems to be at the site. The potential implications that these events might have upon the future of nuclear power in general will also be discussed.
Views: 31067 CITRIS
Donald Glaser Professor of the Graduate School Division of Neurobiology Our goal is to construct computational models of the human visual system which explain its performance in terms of its physiology and anatomy. In vision experiments we present images on computer monitors to subjects who are asked to judge shape, depth, color, velocity, texture, motion, etc. In a recent study of stereopsis, subjects could judge the relative depth of two adjacent test dots in the center of the screen very accurately. Next the "scene" was enclosed in a "picture frame" 50 degrees wide. When the frame was "tilted" in stereo, a systematic bias was discovered in the test dot judgments, even though the subjects didn't know that the frame was being manipulated and couldn't report it correctly. Thus a powerful subliminal cue was at work, not contained in the classical theory of stereopsis. We are working on models to explain this and other mysterious "unclassical" results. Our recent models of the visual system depend on propagation of excitations in a two-dimensional network of neurons similar to those in the primary visual cortex. These models can detect a single moving dot in a field of thousands of fixed dots, in analogy with our ability to detect an artificial satellite moving against 3000 fixed stars in the night sky, for a signal/noise ratio of 1/3000 and seem to work well also for perception of shape, and depth. They are being developed using the largest unclassified Cray computer in addition to our own desktop machines and also being tested psychophysically. Simulations are essential since conventional mathematics are ill-suited to building a useful bridge between psychophysics and neurobiology. http://mcb.berkeley.edu/faculty/NEU/glaserd.html
Views: 4916 CITRIS
Artificial Intelligence and the Future of Games as an Expressive Medium Michael Mateas [Professor of Computer Science, UC Santa Cruz] Abstract: Artificial intelligence methods open up new possibilities in game design, enabling the creation of believable characters with rich personalities and emotions, interactive story systems that incorporate player interaction into the construction of dynamic plots, and authoring systems that assist human designers in creating games. Games are fast becoming a major medium of the 21st century, being used for everything from education, to editorial news commentary, to expressing public policy and political opinions. Game AI research can radically expand the expressiveness of games, supporting them in becoming a mainstream medium for societal discourse. These ideas will be illustrated by looking at two projects: the interactive drama Façade (released July 2005, downloadable from www.interactivestory.net) and current work on automated game design support. Bio: Michael Mateas' research in AI-based art and entertainment combines science, engineering and design into an integrated practice that pushes the boundaries of the conceivable and possible in games and other interactive art forms. He is currently a faculty member in the Computer Science department at UC Santa Cruz, where he helped launch UCSC's game design degree, the first such degree offered in the UC system. Prior to Santa Cruz, Michael was a faculty member at The Georgia Institute of Technology, where he held a joint appointment in the College of Computing and the School of Literature, Communication and Culture, and founded the Experimental Game Lab. With Andrew Stern, Michael released Façade, the world's first AI-based interactive drama in July 2005. Façade has received numerous awards, including top honors at the Slamdance independent game festival (co-located with the Sundance film festival). Michael's current research interests include game AI, particularly character and story AI, ambient intelligence supporting non-task-based social experiences, and dynamic game generation. Michael has presented papers and exhibited artwork internationally including SIGGRAPH, the New York Digital Salon, AAAI, CHI, the Game Developers Conference, ISEA, AIIDE, the Carnegie Museum, and Te PaPa, the national museum of New Zealand. Michael received his Ph.D. in Computer Science from Carnegie Mellon University. Prior to CMU, Michael worked at Intel Laboratories, where he co-founded the ethnographic research group that eventually became People and Practices Research, and Tektronix Laboratories, where he developed qualitative design methodologies and built advanced interface prototypes.
Views: 28896 CITRIS
Wireless sensor networks are destined to see widespread adoption in such diverse sectors as industrial process control, health care, and home automation. The promise and application domain of this field continues to grow, but several false-starts have limited deployments to date. Recent technological breakthroughs in reliability and power consumption have enabled new "industrial strength" networks to finally deliver on the promise of this exciting technology. Brutal standards battles between multi-billion-dollar companies attest to the commercial impact that the technology is now enjoying. This talk will cover some of the history of the field, along with the problems and their solutions, commercial applications, and research directions.
Views: 72930 CITRIS
A chicken in every pot, a car in every garage, and a drone in every barn? UAVs have been promised to revolutionize agriculture and Daniel McKinnon from 3D Robotics looks forward to sharing what has and hasn't worked for drones in ag with the UC Berkeley community. Daniel looks forward to talking about optimizing fertilizer for row crops, selecting the finest grapes in vineyards, saving water for pistachio growers, and much more. Wednesday, September 2, 2015 from 12:00 PM to 1:00 PM (PDT) Sutardja Dai Hall - Banatao Auditorium University of California, Berkeley
Views: 9370 CITRIS
Simon Cherry [Professor of Bioengineering, UC Davis] Abstract: Biomedical imaging technologies have revolutionized medicine over the past century and have become indispensable tools in the diagnosis and management of a wide range of diseases, as well as in basic and preclinical research in animal models. Each imaging modality has its own characteristic strengths and weaknesses, and for this reason, there has been a growing trend towards hybrid imaging devices that can integrate the advantages of two different imaging technologies into a single instrument. This presentation will trace the development of hybrid magnetic resonance imaging (MRI) and positron emission tomography (PET) scanners, a new technology that promises to deliver unique imaging capabilities into the biomedical research field, and ultimately into clinical diagnostics. The challenges in integrating these two imaging techniques will be discussed, and early imaging data from prototype systems presented.
Views: 37064 CITRIS
Nokia Distinguished Lecture: Jerrold Marsden on Discrete Mechanics and Optimal Control Engineering and Control & Dynamical Systems California Institute of Technology Abstract: We and Nature try to optimize things all the time; find the shortest route to the grocery store, find the most efficient way to throw a discus, cats turning themselves over efficiently, etc. Optimal control is about finding control forces to perform optimal ways of carrying out a task. Many such systems are mechanical and special techniques for computing optimal controls in mechanics will be presented. These techniques are based on recent progress in discrete mechanics. The techniques will be illustrated by systems such as falling cats, reorienting a network of satellites, optimal space mission design, systems with constraints (such as a satellite with momentum wheels), helicopter dynamics, and efficient 2D and 3D robotic walkers. Bio: Jerrold Marsden is a professor of Control and Dynamical Systems at Caltech. He has done extensive research in the area of geometric mechanics, with applications to rigid body systems, fluid mechanics, elasticity theory, plasma physics, as well as to general field theory. His work in dynamical systems and control theory emphasizes how it relates to mechanical systems and systems with symmetry. He is one of the original founders in the early 1970's of reduction theory for mechanical systems with symmetry, which remains an active and much studied area of research today. He has won a number of awards for his research.
Views: 9226 CITRIS
Parallel Programming in the .NET Framework 4 (Igor Ostrovsky, Microsoft) Parallel programming is the next big thing in the world of software development. In this session, we will talk about why it is so important, dive into the parallel programming functionality introduced in the .NET Framework 4 (often referred to as the Parallel Extensions to .NET), and explore several demos and C# code samples. The session should be accessible to those new to parallel programming while providing enough content to keep the interest of those who are more familiar with the subject. Slides: http://parlab.eecs.berkeley.edu/sites/all/parlab/files/Session1.pdf http://parlab.eecs.berkeley.edu/sites/all/parlab/files/Session2.pdf
Views: 10125 CITRIS
Ten Myths of ICT for International Development Speaker/Performer: Kentaro Toyama, Researcher, School of Information, UC Berkeley Abstract: The past decade has seen incredible interest in applying information and communication technologies for international development, an endeavor often abbreviated "ICT4D." Can mobile phones be used to improve rural healthcare? How do you design user interfaces for an illiterate migrant worker? What value is technology to a farmer earning $1 a day? Interventionist ICT4D projects seek to answer these kinds of questions, but the excitement has also generated a lot of hype about the power of technology to solve the deep problems of poverty. In this talk, I will (1) present several myths of ICT4D that persist despite evidence to the contrary, (2) offer a theory of "technology as amplifier" which explains the gap between rhetoric and actuality, and (3) provide one key recommendation for successful ICT4D interventions. My hope is to temper the brash claims of technology with realism about its true potential. Bio: Kentaro Toyama (www.kentarotoyama.org) is a visiting researcher in the School of Information at the University of California, Berkeley. He is working on a book that argues that increasing wisdom - knowledge, virtues, and actions that generate well-being - should be the primary goal of global development activity. Until 2009, Kentaro was assistant managing director of Microsoft Research India, which he co-founded in 2005. At MSR India, he started the Technology for Emerging Markets research group, which conducts interdisciplinary research to understand how the world's poorest communities interact with electronic technology and to invent new ways for technology to support their socio-economic development. Prior to his time in India, Kentaro did computer vision and multimedia research at Microsoft Research in Redmond, WA, USA and Cambridge, UK, and taught mathematics at Ashesi University in Accra, Ghana. Kentaro graduated from Yale with a PhD in Computer Science and from Harvard with a bachelors degree in Physics.
Views: 5484 CITRIS
Dmitri Strukov Assistant Professor, UC Santa Barbara
Views: 6147 CITRIS
by Richard White and Igor Paprotny, UC Berkeley i4energy website: http://i4energy.org/
Views: 10522 CITRIS
Computational imaging involves the joint design of imaging system hardware and software, optimizing across the entire pipeline from acquisition to reconstruction. This talk will describe new methods for computational microscopy with coded illumination, based on a simple and inexpensive hardware modification of a commercial microscope. Traditionally, one must trade field-of-view for resolution; with our methods we can have both, resulting in Gigapixel-scale images with resolution beyond the diffraction limit of the system. Our reconstruction algorithms are based on large-scale nonlinear non-convex optimization procedures for phase retrieval. Laura Waller leads the Computational Imaging Lab, which develops new methods for optical imaging, with optics and computational algorithms designed jointly. She holds the Ted Van Duzer Endowed Professorship and is a Senior Fellow at the Berkeley Institute of Data Science (BIDS), with affiliations in Bioengineering and Applied Sciences & Technology. Laura was a Postdoctoral Researcher and Lecturer of Physics at Princeton University from 2010-2012 and received BS, MEng and PhD degrees from MIT in 2014, 2015 and 2010, respectively. She is a Moore Foundation Data-Driven Investigator, Bakar fellow, Distinguished Graduate Student Mentoring awardee, NSF CAREER awardee and Packard Fellow.
Views: 1792 CITRIS
Universal picking (UP), or reliable robot grasping of a diverse range of novel objects from heaps, is a grand challenge for e-commerce order fulfillment, manufacturing, inspection, and home service robots. Optimizing the rate, reliability, and range of UP is difficult due to inherent uncertainty in sensing, control, and contact physics. This paper explores “ambidextrous” robot grasping, where two or more heterogeneous grippers are used. We present Dexterity Network (Dex-Net) 4.0, a substantial extension to previous versions of Dex-Net that learns policies for a given set of grippers by training on synthetic datasets using domain randomization with analytic models of physics and geometry. We train policies for a parallel-jaw and a vacuum-based suction cup gripper on 5 million synthetic depth images, grasps, and rewards generated from heaps of three-dimensional objects. On a physical robot with two grippers, the Dex-Net 4.0 policy consistently clears bins of up to 25 novel objects with reliability greater than 95% at a rate of more than 300 mean picks per hour. https://berkeleyautomation.github.io/dex-net/ Video Produced by: Adriel Olmos
Views: 2570 CITRIS
Brian A. Wandell Stein Family Professor and Chair Psychology Electrical Engineering (by courtesy) http://white.stanford.edu/wandell.html
Views: 18417 CITRIS
by Lindsay Miller, UC Berkeley i4energy website: http://i4energy.org/
Views: 4006 CITRIS
This is a i4Energy Seminar Speaker: Steven Low, Caltech Sponsor: CITRIS (Center for Information Technology Research in the Interest of Society) Event Location: UC Berkeley ([email protected], CITRIS Headquarters) Abstract: We first propose a simple model that integrates two-period electricity markets, uncertainty in renewable generation, and real-time dynamic demand response. A load serving entity decides its day-ahead procurement to optimize expected social welfare a day before energy delivery. At delivery time when renewable generation is realized, it coordinates with users, in a decentralized manner, to manage load and purchase real-time balancing power in the real-time market, if necessary. We derive the optimal day-ahead decision, propose real-time demand response algorithm, and study the effect of volume and variability of renewable generation on the optimal social welfare. This simple model ignores constraints from the underlying power network. We then formulate the problem with these network constraints and consider optimal power flow (OPF) and VAR control. These problems are well-known nonconvex optimization problems and we propose relaxations that can be solved efficiently. We prove conditions under which the relaxations are exact. In particular, we show that a tree network always has zero duality gap. We apply this result to control voltage and reactive power in distribution networks, and present results from realistic simulation of a Southern California distribution circuit. (Joint work with Subhomesh Bose, Mani Chandy, Masoud Farivar, Dennice Gayme, and Libin Jiang, Javad Lavaei, Caltech, and Chris Clarke, SCE)
Views: 5804 CITRIS
Speaker: Janice Lin, Strategen Lecture: i4Energy seminar: i4Energy Center Initiative Sponsor: CITRIS (Ctr for Info Technology Research in the Interest of Society) Energy storage has often been referred to as the 'holy grail' of the electric power system -- an unattainable panacea that would greatly improve the grid if found. Come hear why it is no longer unattainable, but rather a true power system game changer making impacts today. Janice Lin of Strategen Consulting will show how energy storage is creating tremendous opportunities within the production value chain, throughout the grid, and across multiple industry sectors. ******************** The modern power grid was designed and is currently operated based on the premise that energy cannot be practically stored. That was a reasonable approach when both energy consumption and fossil-based generation were highly predictable and global warming a distant concern. Today, with the implementation of large quantities of intermittent renewable energy and the concurrent electrification of transportation, the nature of demand and supply is rapidly changing and becoming more difficult to manage. Power plants struggle to balance supply and demand in real time, which causes a host of problems, including the need for large fleets of idling power plants, poor grid reliability and costly capacity additions that are utilized only a few days per year. Energy storage is a broad asset class that can respond quickly to these imbalances by shaping and shifting energy to when it is needed most. Storage thus provides enormous local and system-wide benefits, including greater electric system reliability, more economical use of existing assets, faster response of the grid to changing loads, reduced greenhouse gas emissions and improved ability to integrate renewable energy. With so many demonstrated and potential benefits, why isn't there more advanced energy storage on the grid? In this talk, Strategen Consulting Managing Partner Janice Lin will discuss the major policy hurdles to integrating energy storage onto the grid, touching on why California is a role model for energy policy and how organizations like the California Energy Storage Alliance (CESA) are working to create a level playing field for energy storage in the electric power sector. The discussion will also cover energy storage and the myriad benefits it provides, as well as the opportunities that will be created as storage and renewables transform our electric power system to be cleaner, more efficient, more reliable, and more cost effective.
Views: 6161 CITRIS