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Krishnaprasad, P. S.

P. S. Krishnaprasad
2233 A.V. Williams Building

Research Interests 

Geometric control theory and filtering theory; control of infinite dimensional systems; model reduction; dynamics of nonholonomic systems with symmetries; dynamical systems on Lie groups and optimal trajectory generation

Intelligent control architectures for complex systems inspired in part by biological paradigms such as central pattern generators, and space maps associated to auditory and other sensory modalities; learning binaurally directed movement; sensorimotor feedback in echo-locating bats; hybrid models for networks of sensors and actuators; languages for motion control

Problems of modeling, design, motion planning and control, arising in mobile robotics and robotic manipulation; sensors and actuators for robotic end-effectors; motion control for nonholonomic robots; under-actuated autonomous robotic vehicles; GPS-aided navigation of mobile robots

Dynamics and control of formations, swarming and related biological phenomena; acoustics and biological signal processing; pursuit phenomena and prey capture behavior in nature; evolutionary game-theoretic basis for strategies of pursuit



P.S. Krishnaprasad received his Ph.D. degree from Harvard University in 1977. He was on the faculty of the Systems Engineering Department at Case Western Reserve University from 1977 to 1980. He has been with the University of Maryland since August 1980, where he has held the position of Professor of Electrical Engineering since 1987, and a joint appointment with the Institute for Systems Research since 1988. He is also a member of the Applied Mathematics Faculty.

Krishnaprasad has held visiting positions with Erasmus University (Rotterdam); the Department of Mathematics, University of California, Berkeley; the University of Groningen (the Netherlands); the Mathematical Sciences Institute at Cornell University; and the Mechanical and Aerospace Engineering Department at Princeton University.

Krishnaprasad's research interests lie in the broad area of geometric control theory and its applications. His contributions include geometry of parametrization problems in linear systems, the Lie algebraic foundations of certain nonlinear filtering problems pertaining to system identification, the Lie theory and stability of interconnected mechanical systems (e.g., spacecraft with elastic attachments, spinning rotors, and fluid-filled cavities), and symmetry principles in nonlinear control theory. He has also investigated mathematical problems in the kinematics and control of robot manipulators, the real-time control of flexible robot arms with end-point sensing, tactile perception, and the development of symbolic algebraic tools for design and control. In the last several years, his interests have drawn him to: problems of modeling, design, motion planning and control, arising in mobile robotics (legged and wheeled vehicles, autonomous underwater vehicles and autonomous aircraft); geometric methods in nonlinear dynamics; wavelet analysis for signals and systems; intelligent control architectures, in part inspired by biological paradigms such as central patterns generators and neural networks; the technology and theory of smart materials such as piezo-electric and magnetostrictive materials for use in actuation and sensing; problems of integration of actuators and sensors in control networks; and modeling, simulation, monitoring and control in semiconductor manufacturing processes, such as rapid thermal chemical vapor deposition.

A central interest in geometric control theory, geometric mechanics, Lie groups, and distributed parameter systems, guides the technical approaches taken to attack problems in the above areas. Additionally, some of this work is also linked to the experimental efforts in the Intelligent Servosystems Laboratory. In the area of semiconductor processing, experimental efforts are being explored with collaborating University and Industry partners.

P.S. Krishnaprasad was elected a Fellow of the IEEE in 1990 for his contributions to geometric and nonlinear control and engineering education. He also was appointed a 1998-2000 Distinguished Faculty Research Fellow of the University of Maryland. He was the Munich Mathematical Colloquium Lecturer on October 24, 2006, at the Technical University of Munich and is the recepient of the Hendrik W. Bode Lecture Prize for 2007 from the IEEE Control Systems Society, for distinguished contributions to control systems science and engineering. He presented the Bode Lecture on December 14, 2007 at the IEEE Conference on Decision and Control.

Honors and Awards 

Institute of Electrical and Electronics Engineers, 1990

Other Awards
IEEE Control System Society's Hendrik W. Bode Lecture Prize, 2007 | view video of lecture |

University of Maryland Awards
Distinguished Faculty Research Fellow, 1998

Related News 

Alumnus Xiaobo Tan elevated to ASME Fellow
Tan was recognized for his work in robotics. March 7, 2019

Shoukry, Krishnaprasad receive NSF grant for resilient-by-cognition cyber-physical systems
The researchers will equip autonomous systems with an additional layer of intelligence to improve safety and resilience. October 1, 2018

International Workshop on Cyber Deception and Defense addresses threats and countermeasures
The workshop was sponsored by the Army Research Office, the Clark School, ECE and ISR. August 15, 2018

ECE Inducts Three New Distinguished Alumni
Ghanadan, Tan, and Viniotis inducted for leadership and meritorious contributions to engineering, humanitarian efforts, and the application of their engineering education to other disciplines. June 14, 2018

Northrop Grumman contributes research funding for third consecutive year
Krishnaprasad, Srivastava, Aloimonos each receive $75K for individual research projects. June 8, 2018

Alumnus Philip Twu's exciting career in space robotics
Twu has worked on both the Parker Solar Probe and the 2020 Mars Rover. March 30, 2018

Alumnus Xiaobo Tan named Withrow Distinguished Scholar at Michigan State
The award recognizes the scholarship of senior faculty members in the MSU College of Engineering. March 22, 2018

Alumni Naomi Leonard and Xiaobo Tan part of public lecture on underwater robotics
The lecture was part of the Halcyon Dialogues on Robotics held at AAAS headquarters in Washington, D.C. October 20, 2017

Flocks and Form
P. S. Krishnaprasad and alumnus Matteo Mischiati devise a new fiber bundle structure to describe the changing forms of flocks and underlying kinematic modes. April 26, 2017

Alumnus Fumin Zhang promoted to full professor at Georgia Tech
His research interests are in the design and control of marine robots and mobile sensor networks, as well as cyber-physical systems theory. March 29, 2017

IAI sponsors colloquium series for seventh year
The community-building series features ISR faculty speakers. January 24, 2017

Alumna Naomi Leonard wins Hendrik W. Bode Lecture Prize
IEEE Control Systems Society prize recognizes distinguished contributions to control systems science or engineering. December 16, 2016

Alum Ram Iyer promoted to full professor at Texas Tech
Iyer has research interests in systems and control theory and their applications in optics, bio-engineering, and cybersecurity of critical infrastructure systems. December 9, 2016

Alumnus Xiaobo Tan elevated to IEEE Fellow
His citation reads, “for contributions to modeling and control of smart materials and underwater robots.” November 28, 2016

Small collectives and nonlinear dynamics
New paper by Krishnaprasad, Galloway, Justh published in Proceedings of the Royal Society A. November 9, 2016

Narayan, Zhou, Schlotfeldt, Strahan win ISR outstanding awards
ISR confers awards of excellence in its annual ceremony. September 13, 2016

Four ISR students named to Clark School Future Faculty Fellow program
The program prepares Ph.D. students for academic careers in top-50 engineering schools. April 19, 2016

Alum Xiaobo Tan named 'Foundation Professor' at Michigan State
Tan develops bio-inspired underwater robots, electroactive polymer sensors and actuators. January 27, 2016

Naomi Leonard to be inducted into Innovation Hall of Fame
Clark School honoring alumna for work in cooperative control October 16, 2015

Alumnus Xiaobo Tan promoted to full professor at Michigan State
Tan earned a 2002 Ph.D. in electrical engineering from the University of Maryland. July 13, 2015

Optimal control and strong interactions imply flock cohesion
New work suggests that copying behavior in social groups may be governed by optimal control theory April 2, 2015

Workshop on Geometry of Collective Behavior organized by P. S. Krishnaprasad
The workshop was part of the 53rd IEEE Conference on Decision and Control. December 12, 2014

Alumnus Matteo Mischiati is lead author of sensorimotor control study in Nature
Research shows dragonflies use predictive control strategies, not just simple reactions, to capture prey. December 12, 2014

Alum Dimitris Tsakiris improves propulsion of robotic octopus
Paper is finalist for two awards at IROS 2014. September 29, 2014

Alum Xiaobo Tan developing robotic fish to 'stalk' real fish in the Great Lakes
The MSU professor's fish will track the movements of lake trout, walleye and lake sturgeon. September 29, 2014

Srivastava, Dey, Mirsky, King win 2014 ISR Awards
Awards honor outstanding faculty, graduate and undergraduate students, and staff. May 7, 2014

Alumnus Vikram Manikonda named president and CEO of Intelligent Automation, Inc.
Alumnus earned Ph.D. with Krishnaprasad in 1997. April 4, 2014

Intelligent Automation Inc. continues sponsorship of colloquia series
First colloquium on Feb. 5 features Derek Paley. January 23, 2014

Galloway, Justh, Krishnaprasad publish chasing and flocking research in Proceedings of the Royal Society A
New models and equations aid in understanding of natural phenomena, has implications for engineered networks of robots. August 17, 2013

UAE students, Northrop Grumman engineers tour robotics laboratories
Visitors were in town for the annual AUVSI conference. August 14, 2013

Krishnaprasad, Jarzynski part of 'Information Engines' MURI
Project will develop principles and algorithms for synthetic information nanosystems. July 17, 2013

Two ECE Graduate Students Receive Inaugural Kulkarni Fellowship
Biswadep Dey and Ravi Garg receive assistance from the Kulkarni Foundation in the final stages of their Ph.D. research. July 5, 2013

IAI again sponsors colloquia series
First speaker: Steven Gabriel on Feb. 6. January 18, 2013

Alum Xiaobo Tan improves robotic fish
Fish now can glide for long distances. January 17, 2013

MERIT-BIEN and TREND Fair Showcases Undergraduate Research
More than 20 undergraduate students participate in research projects sponsored by ECE and IREAP. August 7, 2012

Krishnaprasad awarded AFOSR DURIP for collective behavior testbed
System will include mobile robots, cameras and enhanced computational resources. July 2, 2012

Alum Sean Andersson earns tenure at Boston University
Former student of P. S. Krishnaprasad has research interests in systems and control theory. May 3, 2012

Krishnaprasad delivers Princeton Baetjer Colloquium lecture
Was named to the 2012 Baetjer Colloquium Lectureship for contributions to geometric control, filtering theory, robotics and bio-inspired design. May 2, 2012

Alum Xiaobo Tan's research featured in NSF Highlight
Story features Tan's artificial muscle-enabled robotic fish. April 1, 2012

Alumna Ermin Wei featured in MIT publication
Former ISR award winner is Ph.D. student at MIT. December 1, 2011

Alum Matteo Mischiati accepts postdoc position
Mischiati will study dragonfly flight behavior at Howard Hughes Medical Institute. November 17, 2011

Alum Kevin Galloway starts postdoc at University of Michigan
Former student of P. S. Krishnaprasad will develop feedback controls for bipedal robots. October 6, 2011

Nuno Martins receives NSF grant for animal-borne wireless networks
The $1.8M grant is a collaboration with National Geographic to monitor and protect endangered species. September 8, 2011

Roger Brockett honored for devotion to graduate student advising
ISR-affiliated faculty member receives Harvard's Capers and Marion McDonald Award for Excellence in Mentoring and Advising. May 3, 2011

Intelligent Automation, Inc. to sponsor colloquia series
IAI president and ISR alumnus Vikram Manikonda announces generous support. January 11, 2011

ISR's busy November: NSF site visit, 25th anniversary dinner, SAC meeting
The Institute for Systems Research held three major events from Nov. 17–19. December 14, 2010

ISR postdoc Chen Chiu wins outstanding paper prize
Journal of Experimental Biology names article on bat flight behavior best of 2010. December 6, 2010

Galloway, Gregorczyk, Gremillion awarded L-3 Graduate Research Fellowships
Fellowships support Ph.D. candidates working in specific research areas. October 9, 2010

Krishnaprasad, Cavagna begin new AFOSR collective behavior research
Flocks and swarms of birds and insects will be studied to discern underlying principles, build models and algorithms. October 5, 2010

Chiu, Reddy, Xian, Krishnaprasad and Moss publish in Journal of Experimental Biology
Research examines behavior among competing bats. September 30, 2010

Alumnus Xiaobo Tan Earns Tenure at MSU
Tan, a 2002 ECE alumnus, has been promoted to Associate Professor of ECE at Michigan State University. July 15, 2010

Alum Fumin Zhang wins ONR Young Investigator Program award
Former student of P.S. Krishnaprasad is one of only 17 recipients nationwide. April 7, 2010

Alumnus Xiaobo Tan receives MSU Teacher-Scholar Award
Assistant professor one of six to win the early career award. February 15, 2010

Sezmi launches customer pilot in Los Angeles
Alumni Buno Pati and Phil Wiser founded the start-up TV network. November 16, 2009

Alum Xiaobo Tan receives new autonomous robotic fish grant
The highly maneuverable, energy-efficient gliding fish will monitor aquatic environments. November 4, 2009

Alumnus Fumin Zhang wins NSF CAREER Award
Research aims to better control tasks supported by embedded computing devices and batteries. September 18, 2009

ISR alumnus Buno Pati to be inducted into Clark School Innovation Hall of Fame
Pati will be honored for developing phase-shift lithography. August 13, 2009

Alumnus Xiaobo Tan to Lead New NSF Program for Secondary School Teachers
"Research Experiences for Teachers" will focus on biology-inspired technology and systems. August 9, 2009

Honda's Tetsuaki Nakano, Kensuke Iwanaga give final presentations
ISR visiting research scientists spoke on bipedal locomotion; bipolar junction transistors. July 23, 2009

Alumnus Sean Andersson receives NSF CAREER Award
Research will focus on nonlinear control for single molecule tracking. July 2, 2009

ISR awards ceremony honors faculty, graduate student, staff member
Five individuals honored for outstanding contributions in 2008–2009. June 24, 2009

Alumnus Narasingarao Sreenath promoted to full professor at Case Western Reserve
Sreenath directs Case Western's Complex Systems Biology Center. June 10, 2009

Carlos Berenstein to retire in July
The Math/ISR professor gave a special lecture on May 21. May 18, 2009

Paper by Krishnaprasad, Justh, Wei published in Proceedings of the Royal Society A
Paper offers possible evolutionary basis for flight behavior in echolocating bats. February 26, 2009

Six ISR students chosen for Clark School's Future Faculty Program
The program aims to increase the number of Ph.D. graduates who obtain academic positions in prestigious engineering schools. February 18, 2009

Six ISR students selected for Future Faculty Program
Clark School program helps students prepare for academic positions. February 15, 2009

Alumnus interview: Herbert Struemper
The 1997 ECE Ph.D. develops mechanistic disease models for drug discovery. January 26, 2009

Manikonda Named President of Intelligent Automation, Inc.
Alumnus earned Ph.D. with Krishnaprasad in 1997. October 28, 2008

Alumnus interview: Reza Shahidi
The Qualcomm engineer talks about his career in the wireless communication industry. October 18, 2008

Alumnus Tan Presents Research at Capitol Hill Science Funding Event
Xiaobo Tan, assistant professor at Michigan State, showcased his research at a June event in DC. July 9, 2008

Krishnaprasad gives inaugural Cymer Distinguished Lecture
Cymer Center for Control Systems and Dynamics June 19, 2008

ISR welcomes two Honda Visiting Scholars
Kensuke Iwanaga and Tetsuaki Nakano are here for 14 months. June 11, 2008

REU students spending summer in research
The 12 undergraduate students are participating in NSF's Research Experiences for Undergraduates program. June 3, 2008

Vorontsov, Koev, Wei and McKinney win at ISR awards ceremony
Quartet honored for outstanding contributions in 2007–2008. May 28, 2008

Galloway and Tjoa Awarded Summer Research Fellowships
ECE graduate students were selected for new summer research fellowships designed to support doctoral students. May 15, 2008

Alumnus interview: George Kantor
He tells us about the DEPTHX underwater robot project. April 15, 2008

Alumnus Xiaobo Tan receives ONR grant for biomimetic robotic fish
Robots are based on biological principles and incorporate biomimetic electroactive polymers. April 8, 2008

All Things Considered explores icy waters with DEPTHX
ECE/ISR alumnus George Kantor's control research contributes to autonomous underwater vehicle's success. February 21, 2008

P.S. Krishnaprasad gives Bode Lecture
Winner of 2007 Bode Prize spoke at 46th IEEE CDC Conference. December 10, 2007

Alum Andrew Newman wins Hart Prize for Development
Award is for automated collaborative dynamic retasking project. December 7, 2007

Alumnus George Kantor promoted at Carnegie-Mellon
Kantor's research also featured in Sept. 2007 IEEE Spectrum magazine. September 24, 2007

ISR's Intelligent Servosystems Lab places two summer interns at Intelligent Automation Inc.
Matteo Mischiati and Philip Twu are the first IAI interns in a new collaborative program. June 21, 2007

ISR faculty host CRCNS Principal Investigators' Meeting
Event at University of Maryland draws 130 participants. June 7, 2007

ISR alum Fumin Zhang joins Georgia Tech faculty
The 2004 ECE Ph.D. is currently a postdoc at Princeton working with Naomi Leonard. June 4, 2007

ISR alum Andrew Newman promoted at Johns Hopkins Applied Physics Lab
Former student of P.S. Krishnaprasad has been with APL since 2003. May 21, 2007

Shihab Shamma wins outstanding faculty award
Research has uncovered computational principles underlying the processing and recognition of complex sounds in the auditory system. May 11, 2007

ISR alum Ram Venkataraman Iyer earns tenure at Texas Tech
Former student of P.S. Krishnaprasad specializes in systems and control theory in the context of aerospace and smart structures. April 2, 2007

ISR alums Leonard, Tassiulas named IEEE Fellows
Both earned Electrical Engineering Ph.D.s in the early 1990s. March 26, 2007

Krishnaprasad, Baras, Moss participating in new MURI awards
ISR faculty on teams researching MANETs, sensor networks and micro air vehicles for Department of Defense. March 8, 2007

Krishnaprasad Receives IEEE Bode Prize
Clark School faculty member earns IEEE society's distinguished award in controls. December 20, 2006

Krishnaprasad delivers Munich Mathematical Colloquium lecture
Control expert speaks on "Geometric Control, Cohesion and Pursuit." November 7, 2006

ISR undergrad Travis Young named Merrill Presidential Scholar
Senior mentored by Krishnaprasad; active in Intelligent Servosystems Lab. October 12, 2006

Stealth strategy paper by Justh, Krishnaprasad published
Researchers develop simple model that represents the engagement of pursuing bats and their insect prey July 5, 2006

Twelve REU students welcomed
Summer experience gives undergrads the opportunity to work with ISR researchers June 5, 2006

Bats use 'guided missile' strategy
A new study from four ISR researchers shows bats use a guided missile strategy to catch their prey. May 4, 2006

Grad student's high altitude work highlighted in GPS World
ISR grad student Luke Winternitz has co-written an article on his NASA work for GPSWorld magazine, explaining the development of a GPS receiver for high-altitude (above the GPS constellation) satellite navigation. April 19, 2006

ISR alum Xiaobo Tan wins NSF CAREER Award
ISR alum and current Michigan State University ECE Assistant Professor Xiaobo Tan has won a National Science Foundation Faculty Early Career Development (CAREER) Award for his research, "Dexterous Biomimetic Micromanipulation Using Artificial Muscles: Modeling, Sensing and Control." February 24, 2006

Berenstein, Krishnaprasad contribute to new signal processing book
Work is based on 2004 symposium honoring Berenstein October 28, 2005

Abed, Baras, Krishnaprasad, Justh speak at swarming workshop
Speakers apply natural behaviors to networked groups of autonomous vehicles August 16, 2005

ISR alum Sean Andersson joins Boston University faculty
Will be assistant professor in aerospace and mechanical engineering August 16, 2005

Vorontsov, Krishnaprasad, Justh and Beresnev receive sensor patent
Invention uses phase spatial light modulators July 16, 2005

ISR alum George Kantor co-authors new robotics book
Principles of Robot Motion includes theory, algorithims and implementation June 8, 2005

ISR collaborations with Toshiba
Toshiba researchers explore future research collaborations and reliability engineering April 17, 2005

ISR alumna Naomi Leonard delivers distinguished lecture
Underwater robotics specialist speaks at UC Santa Barbara February 4, 2005

Naomi Leonard profiled in New York Times
ISR alumane is MacArthur Foundation Fellow. November 5, 2004

Moss is PI for "Innovative Technologies Inspired by Biosonar"
Research will study transformation of sensory information to motor commands for adaptive behaviors. September 8, 2004

Alum Naomi Leonard named as MacArthur Fellow
Sept 2004—Expert in underwater robotics research receives coveted, no-strings-attached "genius" grant. September 1, 2004

ISR's Xiaobo Tan joins Michigan State University
July 2004—Former ISR research associate to become Assistant Professor in ECE department. July 2, 2004

Carlos Berenstein honored with celebration of his career
June 2004—ISR professors among speakers at the event, hosted by George Mason University. June 6, 2004

Horiuchi, Krishnaprasad receive $286,000 AFOSR grant
Research to focus on "Neuromorphic VSLI-Based Bat Echolocation for Micro-Aerial Vehicle Guidance" March 5, 2004

Leonard is Principal Investigator
ISR alum heads investigation for the Department of Defense March 2, 2004

ISR faculty showcase research to Honeywell Labs delegation
Research of Baras, Abshire, Ghodssi, Krishnaprasad and Justh featured. December 6, 2003

Leonard conducts underwater robotics research
Team launched fleets of underwater vehicles into the Pacific Ocean September 1, 2003

Faculty participating in three different MURI awards
Research includes networked control systems, hybrid smart materials and radiofrequency pulses March 7, 2001

Shamma, Horiuchi, Baras, Krishnaprasad, Moss awarded acoustic sensors contract
Team will develop intelligent and noise-robust interfaces for MEMS acoustic sensors for DARPA April 10, 2000