Bio


Sanjay Lall is Professor of Electrical Engineering in the Information Systems Laboratory and Professor of Aeronautics and Astronautics at Stanford University. He received a B.A. degree in Mathematics with first-class honors in 1990 and a Ph.D. degree in Engineering in 1995, both from the University of Cambridge, England. His research group focuses on the development of advanced engineering methodologies for the design of control, optimization and signal processing algorithms which occur in a wide variety of electrical, mechanical and aerospace systems. Before joining Stanford he was a Research Fellow at the California Institute of Technology in the Department of Control and Dynamical Systems, and prior to that he was a NATO Research Fellow at Massachusetts Institute of Technology, in the Laboratory for Information and Decision Systems. He was also a visiting scholar at Lund Institute of Technology in the Department of Automatic Control. He has significant industrial experience applying advanced algorithms to problems including satellite systems at Lockheed Martin, advanced audio systems at Sennheiser, Formula 1 racing, and integrated circuit diagnostic systems, in addition to several startup companies. Professor Lall has served as Associate Editor for the journal Automatica, on the steering and program committees of several international conferences, and as a reviewer for the National Science Foundation, DARPA, and the Air Force Office of Scientific Research. He is the author of over 130 peer-refereed publications.

Academic Appointments


Honors & Awards


  • CAREER Award, National Science Foundation (2006)
  • Presidential Early Career Award for Scientists and Engineers, National Science Foundation (2007)
  • George S. Axelby Outstanding Paper Award, IEEE (2007)

Professional Education


  • PhD, Cambridge (1995)

2017-18 Courses


Stanford Advisees


All Publications


  • Convexity of Decentralized Controller Synthesis IEEE TRANSACTIONS ON AUTOMATIC CONTROL Lessard, L., Lall, S. 2016; 61 (10): 3122-3127
  • Stability Analysis of Distributed Power Generation With Droop Inverters IEEE TRANSACTIONS ON POWER SYSTEMS Chang, C., Gorinevsky, D., Lall, S. 2015; 30 (6): 3295-3303
  • Optimal Control of Two-Player Systems With Output Feedback IEEE TRANSACTIONS ON AUTOMATIC CONTROL Lessard, L., Lall, S. 2015; 60 (8): 2129-2144
  • Explicit Solutions to Separable Problems in Optimal Cooperative Control IEEE TRANSACTIONS ON AUTOMATIC CONTROL Kim, J., Lall, S. 2015; 60 (5): 1304-1319
  • Optimal Controller Synthesis for Decentralized Systems Over Graphs via Spectral Factorization IEEE TRANSACTIONS ON AUTOMATIC CONTROL Swigart, J., Lall, S. 2014; 59 (9): 2311-2323
  • Dynamical and Voltage Profile Stability of Inverter-Connected Distributed Power Generation IEEE TRANSACTIONS ON SMART GRID Chang, C., Gorinevsky, D., Lall, S. 2014; 5 (4): 2093-2105
  • Polynomial Level-Set Method for Polynomial System Reachable Set Estimation IEEE TRANSACTIONS ON AUTOMATIC CONTROL Wang, T., Lall, S., West, M. 2013; 58 (10): 2508-2521
  • Polynomial level-set method for attractor estimation JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS Wang, T., Lall, S., West, M. 2012; 349 (9): 2783-2798
  • Networked Markov Decision Processes With Delays IEEE TRANSACTIONS ON AUTOMATIC CONTROL Adlakha, S., Lall, S., Goldsmith, A. 2012; 57 (4): 1013-1018
  • Decentralized Control via Grbner Bases and Variable Elimination IEEE TRANSACTIONS ON AUTOMATIC CONTROL Shin, H. S., Lall, S. 2012; 57 (4): 1030-1035
  • Separable Optimal Cooperative Control Problems American Control Conference (ACC) Kim, J., Lall, S. IEEE COMPUTER SOC. 2012: 5868–5873
  • Optimal Cooperative Control of Dynamically Decoupled Systems 51st IEEE Annual Conference on Decision and Control (CDC) Kim, J., Lall, S., Ryoo, C. IEEE. 2012: 4852–4857
  • Frequency Stability for Distributed Generation Connected through Grid-Tie Inverter IEEE International Conference on Power System Technology (POWERCON) Glover, E., Chang, C., Gorinevsky, D., Lall, S. IEEE. 2012
  • Optimal Cooperative Control of Dynamically Decoupled Systems. Kim, J., H., Lall, S., Ryoo, C., K. 2012
  • Frequency Stability for Distributed Generation Connected through Grid-Tie Inverter. Glover, E., Chang, C., C., Gorinevsky, D., Lall, S. 2012
  • Optimal Controller Synthesis for the Decentralized Two-Player Problem with Output Feedback American Control Conference (ACC) Lessard, L., Lall, S. IEEE COMPUTER SOC. 2012: 6314–6321
  • Polynomial Method for PLL Controller Optimization SENSORS Wang, T., Lall, S., Chiou, T. 2011; 11 (7): 6575-6592

    Abstract

    The Phase-Locked Loop (PLL) is a key component of modern electronic communication and control systems. PLL is designed to extract signals from transmission channels. It plays an important role in systems where it is required to estimate the phase of a received signal, such as carrier tracking from global positioning system satellites. In order to robustly provide centimeter-level accuracy, it is crucial for the PLL to estimate the instantaneous phase of an incoming signal which is usually buried in random noise or some type of interference. This paper presents an approach that utilizes the recent development in the semi-definite programming and sum-of-squares field. A Lyapunov function will be searched as the certificate of the pull-in range of the PLL system. Moreover, a polynomial design procedure is proposed to further refine the controller parameters for system response away from the equilibrium point. Several simulation results as well as an experiment result are provided to show the effectiveness of this approach.

    View details for DOI 10.3390/s110706575

    View details for Web of Science ID 000293069200006

    View details for PubMedID 22163973

  • Synthesis for Optimal Two-Player Decentralized Control over TCP Erasure Channels with State Feedback 50th IEEE Conference of Decision and Control (CDC)/European Control Conference (ECC) Chang, C., Lall, S. IEEE. 2011: 3824–3829
  • Quadratic Invariance is Necessary and Sufficient for Convexity American Control Conference (ACC) Lessard, L., Lall, S. IEEE. 2011: 5360–5362
  • A State-Space Solution to the Two-Player Decentralized Optimal Control Problem. Lessard, L., Lall, S. 2011
  • Decentralized Control. Networked Control Systems. Lecture Notes in Control and Information Sciences Swigart, J., Lall, S. 2011; 406: 179--201
  • Optimal Controller Synthesis for a Decentralized Two-Player System with Partial Output Feedback American Control Conference (ACC) Swigart, J., Lall, S. IEEE. 2011: 317–323
  • An Explicit Solution for Optimal Two-Player Decentralized Control over TCP Erasure Channels with State Feedback American Control Conference (ACC) Chang, C., Lall, S. IEEE. 2011: 4717–4722
  • Decentralized Robust Control via Quadratically Invariant Model Projection American Control Conference (ACC) Kim, J., Lall, S., Merrill, W., Behbahani, A. IEEE. 2011: 527–532
  • A Unifying Condition for Separable Two Player Optimal Control Problems 50th IEEE Conference of Decision and Control (CDC)/European Control Conference (ECC) Kim, J., Lall, S. IEEE. 2011: 3818–3823
  • Coding Strategies for a Class of Decentralized Control Problems with Limited Communication 50th IEEE Conference of Decision and Control (CDC)/European Control Conference (ECC) Mirghaderi, R., Lall, S., Goldsmith, A. IEEE. 2011: 4809–4816
  • Fast Algorithms for Resource Allocation in Wireless Cellular Networks IEEE-ACM TRANSACTIONS ON NETWORKING Madan, R., Boyd, S. P., Lall, S. 2010; 18 (3): 973-984
  • Optimal Synthesis and Explicit State-Space Solution for a Decentralized Two-Player Linear-Quadratic Regulator 49th IEEE Conference on Decision and Control (CDC) Swigart, J., Lall, S. IEEE. 2010: 132–137
  • Distributed Engine Control Design Considerations. Merrill, W., Kim, J., H., Lall, S., Majerus, S., Howe, D., Behbahani, A. 2010
  • Convexity of Optimal Control over Networks with Delays and Arbitrary Topology. International Journal of Systems, Control and Communications Rotkowitz, M., Cogill, R., Lall, S. 2010; 2 (1-3): 30--54
  • An Exact Dynamic Programming Solution for a Decentralized Two-Player Markov Decision Process. Wu, J., Lall, S. 2010
  • An Explicit Dynamic Programming Solution for a Decentralized Two-Player Optimal Linear-Quadratic Regulator. Swigart, J., Lall, S. 2010
  • An Explicit State-Space Solution for a Decentralized Two-Player Optimal Linear-Quadratic Regulator American Control Conference Swigart, J., Lall, S. IEEE. 2010: 6385–6390
  • Optimal Decentralized Control of Linear Systems via Groebner Bases and Variable Elimination American Control Conference Shin, H. S., Lall, S. IEEE. 2010: 5608–5613
  • A Constant Factor Approximation Algorithm for Event-Based Sampling Symposium on Systems, Control and Signal Processing held in Honor of Yutaka Yamamoto Cogill, R., Lall, S., Hespanha, J. P. SPRINGER-VERLAG BERLIN. 2010: 51–60
  • An Algebraic Framework for Quadratic Invariance 49th IEEE Conference on Decision and Control (CDC) Lessard, L., Lall, S. IEEE. 2010: 2698–2703
  • Nonlinear Youla Parametrization and Information Constraints for Decentralized Control American Control Conference Wu, J., Lall, S. IEEE. 2010: 5614–5619
  • An Approximate Dynamic Programming Approach to the Dynamic Traveling Repairperson Problem 49th IEEE Conference on Decision and Control (CDC) Shin, H. S., Lall, S. IEEE. 2010: 2286–2291
  • A Dynamic Programming Algorithm for Decentralized Markov Decision Processes with a Broadcast Structure 49th IEEE Conference on Decision and Control (CDC) Wu, J., Lall, S. IEEE. 2010: 6143–6148
  • Internal Quadratic Invariance and Decentralized Control American Control Conference Lessard, L., Lall, S. IEEE. 2010: 5596–5601
  • Hat Guessing Games and the Use of Coding for Decentralized Control 49th IEEE Conference on Decision and Control (CDC) Mirghaderi, R., Adlakha, S., Lall, S., Goldsmith, A. IEEE. 2010: 979–985
  • A Computational Approach for Decentralized Control of Turbine Engines 49th IEEE Conference on Decision and Control (CDC) Kim, J., Lall, S., Merrill, W., Behbahani, A. IEEE. 2010: 346–351
  • Analysis of Polynomial Systems With Time Delays via the Sum of Squares Decomposition IEEE TRANSACTIONS ON AUTOMATIC CONTROL Papachristodoulou, A., Peet, M. M., Lall, S. 2009; 54 (5): 1058-1064
  • Spectral Factorization of Non-Classical Information Structures Under Feedback American Control Conference 2009 Swigart, J., Lall, S. IEEE. 2009: 457–462
  • POSITIVE FORMS AND STABILITY OF LINEAR TIME-DELAY SYSTEMS SIAM JOURNAL ON CONTROL AND OPTIMIZATION Peet, M. M., Papachristodoulou, A., Lall, S. 2009; 47 (6): 3237-3258

    View details for DOI 10.1137/070706999

    View details for Web of Science ID 000208042600011

  • Model reduction, optimal prediction, and the Mori-Zwanzig representation of Markov chains Joint 48th IEEE Conference on Decision and Control (CDC) / 28th Chinese Control Conference (CCC) Beck, C. L., Lall, S., Liang, T., West, M. IEEE. 2009: 3282–3287
  • Reduction of Decentralized Control Problems to Tractable Representations Joint 48th IEEE Conference on Decision and Control (CDC) / 28th Chinese Control Conference (CCC) Lessard, L., Lall, S. IEEE. 2009: 1621–1626
  • A Graph-Theoretic Approach to Distributed Control over Networks Joint 48th IEEE Conference on Decision and Control (CDC) / 28th Chinese Control Conference (CCC) Swigart, J., Lall, S. IEEE. 2009: 5409–5414
  • Reduction of Decentralized Control Problems to Tractable Representations. Lessard, L., Lall, S. 2009
  • Model reduction, optimal prediction, and the Mori-Zwanzig representation of Markov chains. Beck, C., L., Lall, S., Liang, T., West, M. 2009
  • A Graph-Theoretic Approach to Distributed Control over Networks. Swigart, J., Lall, S. 2009
  • Time-delayed Decentralized H-infinity Controller Design for Civil Structures: a Homotopy Method through Linear Matrix Inequalities American Control Conference 2009 Wang, Y., Law, K. H., Lall, S. IEEE. 2009: 4549–4556
  • Decentralized Team Decision Via Coding 47th Annual Allerton Conference on Communication, Control, and Computing Adlakha, S., Mirghaderi, S. R., Lall, S., Goldsmith, A. IEEE. 2009: 151–151
  • Experimental validation of single-iteration multigrid wavefront reconstruction at the Palomar Observatory OPTICS LETTERS Lessard, L., MacMynowski, D., West, M., Bouchez, A., Lall, S. 2008; 33 (18): 2047-2049

    Abstract

    Single-iteration multigrid (SIMG) wavefront reconstruction schemes were implemented and validated on the adaptive optics system at the Hale 5.1 m telescope at the Palomar Observatory. Results indicate that even the simplest such method produces a performance indistinguishable from that of the standard least-squares reconstructor for both bright and dim guide stars. SIMG provides a dramatic reduction in computational cost when compared to vector-matrix multiplication and can be implemented in parallel, making it the obvious choice for reconstruction in future large-scale adaptive optics systems.

    View details for Web of Science ID 000259891400010

    View details for PubMedID 18794926

  • Testing static equilibrium for legged robots IEEE TRANSACTIONS ON ROBOTICS Bretl, T., Lall, S. 2008; 24 (4): 794-807
  • Structured semidefinite programs for the control of symmetric systems AUTOMATICA Cogill, R., Lall, S., Parrilo, P. A. 2008; 44 (5): 1411-1417
  • Warm-started wavefront reconstruction for adaptive optics JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION Lessard, L., West, M., MacMynowski, D., Lall, S. 2008; 25 (5): 1147-1155

    Abstract

    Future extreme adaptive optics (ExAO) systems have been suggested with up to 10(5) sensors and actuators. We analyze the computational speed of iterative reconstruction algorithms for such large systems. We compare a total of 15 different scalable methods, including multigrid, preconditioned conjugate-gradient, and several new variants of these. Simulations on a 128x128 square sensor/actuator geometry using Taylor frozen-flow dynamics are carried out using both open-loop and closed-loop measurements, and algorithms are compared on a basis of the mean squared error and floating-point multiplications required. We also investigate the use of warm starting, where the most recent estimate is used to initialize the iterative scheme. In open-loop estimation or pseudo-open-loop control, warm starting provides a significant computational speedup; almost every algorithm tested converges in one iteration. In a standard closed-loop implementation, using a single iteration per time step, most algorithms give the minimum error even in cold start, and every algorithm gives the minimum error if warm started. The best algorithm is therefore the one with the smallest computational cost per iteration, not necessarily the one with the best quasi-static performance.

    View details for Web of Science ID 000256246000016

    View details for PubMedID 18451921

  • Information State for Markov Decision Processes with Network Delays 47th IEEE Conference on Decision and Control Adlakha, S., Lall, S., Goldsmith, A. IEEE. 2008: 3840–3847
  • Dynamic Programming with Non-Classical Information Structures. Mathematical Theory of Networks and Systems Swigart, J., Lall, S. 2008
  • POSITIVE FORMS AND STABILITY OF LINEAR TIME-DELAY SYSTEMS SIAM JOURNAL ON CONTROL AND OPTIMIZATION Peet, M. M., Papachristodoulou, A., Lall, S. 2008; 47 (6): 3237-3258

    View details for DOI 10.1137/070706999

    View details for Web of Science ID 000263103300022

  • Stochastic Multiscale Approaches to Consensus Problems 47th IEEE Conference on Decision and Control Kim, J., West, M., Lall, S., Scholte, E., Banaszuk, A. IEEE. 2008: 5551–5557
  • Nonlinear Phase-Locked Loop Design using Semidefinite Programming 16th Mediterranean Conference on Control and Automation Wang, T., Chiou, T., Lall, S. IEEE. 2008: 1047–1052
  • A Bayesian Network Approach to Control of Networked Markov Decision Processes 46th Annual Allerton Conference on Communication, Control and Computing Adlakha, S., Lall, S., Goldsmith, A. IEEE. 2008: 446–451
  • Modeling and optimization of transmission schemes in energy-constrained wireless sensor networks IEEE-ACM TRANSACTIONS ON NETWORKING Madan, R., Cui, S., Lall, S., Goldsmith, A. J. 2007; 15 (6): 1359-1372
  • Cross-layer energy and delay optimization in. small-scale sensor networks IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS Cui, S., Madan, R., Goldsmith, A. J., Lall, S. 2007; 6 (10): 3688-3699
  • Global stability analysis of a nonlinear model of Internet congestion control with delay IEEE TRANSACTIONS ON AUTOMATIC CONTROL Peet, M., Lall, S. 2007; 52 (3): 553-559
  • Optimal control of distributed Markov decision processes with network delays 46th IEEE Conference on Decision and Control Adlakha, S., Madan, R., Lall, S., Goldsmith, A. IEEE. 2007: 4804–4810
  • A Constant Factor Approximation Algorithm for Event-Based Sampling. Cogill, R., Lall, S., Hespanha, J. 2007
  • Affine controller parameterization for decentralized control over Banach spaces IEEE TRANSACTIONS ON AUTOMATIC CONTROL Rotkowitz, M., Lall, S. 2006; 51 (9): 1497-1500
  • Distributed algorithms for maximum lifetime routing in wireless sensor networks IEEE GLOBECOM 2004 Madan, R., Lall, S. IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC. 2006: 2185–93
  • An energy-optimal algorithm for neighbor discovery in wireless sensor networks 2nd Workshop on Modeling and Optimization in Mobile, Ad Hoc and Wireless Networks Madan, R., Lall, S. SPRINGER. 2006: 317–26
  • Discrete variational Hamiltonian mechanics JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL Lall, S., West, M. 2006; 39 (19): 5509-5519
  • A characterization of convex problems in decentralized control IEEE TRANSACTIONS ON AUTOMATIC CONTROL Rotkowitz, M., Lall, S. 2006; 51 (2): 274-286
  • An approximation algorithm for the discrete team decision problem SIAM JOURNAL ON CONTROL AND OPTIMIZATION Cogill, R., Lall, S. 2006; 45 (4): 1359-1368

    View details for DOI 10.1137/050628374

    View details for Web of Science ID 000242572300010

  • Convexification of Optimal Decentralized Control Without a Stabilizing Controller. Rotkowitz, M., Lall, S. 2006
  • A Constant Factor Approximation Algorithm for Event-Based Sampling. Cogill, R., Lall, S., Hespanha, J. 2006
  • A space-time diffusion scheme for peer-to-peer least-squares estimation 5th International Conference on Informational Processing in Sensor Networks Xiao, L., Boyd, S., Lall, S. ASSOC COMPUTING MACHINERY. 2006: 168–176
  • An approximate dynamic programming approach to decentralized control of stochastic systems Workshop on Control of Uncertain Systems Cogill, R., Rotkowitz, M., Van Roy, B., Lall, S. SPRINGER-VERLAG BERLIN. 2006: 243–256
  • Backlog analysis of maximal matching switching with speedup 45th IEEE Conference on Decision and Control Cogill, R., Lall, S. IEEE. 2006: 1876–1881
  • Suboptimality bounds in stochastic control: A queueing example American Control Conference 2006 Cogill, R., Lall, S. IEEE. 2006: 1642–1647
  • Positive forms and stability of linear time-delay systems 45th IEEE Conference on Decision and Control Peet, M., Papachristodoulou, A., Lall, S. IEEE. 2006: 187–193
  • A fast and adaptive test of static equilibrium for legged robots IEEE International Conference on Robotics and Automation (ICRA) Bretl, T., Lall, S. IEEE. 2006: 1109–1116
  • Degree bounds for polynomial verification of the matrix cube problem 45th IEEE Conference on Decision and Control Chen, B., Lall, S. IEEE. 2006: 4405–4410
  • A characterization of convex problems in decentralized control IEEE TRANSACTIONS ON AUTOMATIC CONTROL Rotkowitz, M., Lall, S. 2005; 50 (12): 1984-1996
  • A simple condition for the convexity of optimal control over networks with delays 44th IEEE Conference on Decision Control/European Control Conference (CCD-ECC) Rotkowitz, M., Cogill, R., Lall, S. IEEE. 2005: 6686–6691
  • Decentralized stochastic decision problems and polynomial optimization American Control Conference 2005 (ACC) Cogill, R., Lall, S. IEEE. 2005: 2709–2714
  • Energy-delay tradeoffs for data collection in TDMA-based sensor networks IEEE International Conference on Communications (ICC 2005) Cui, S. G., Madan, R., Goldsmith, A., Lall, S. IEEE. 2005: 3278–3284
  • Cross-Layer Design for Lifetime Maximization in Interference-Limited Wireless Sensor Networks. Madan, R., Cui, S., Lall, S., Goldsmith, A. 2005
  • A Distributed Algorithm with Linear Convergence for Maximum Lifetime Routing in Wireless Networks. Madan, R., Luo, Z.-Q., Lall, S. 2005
  • Mixed Integer-Linear Programming for Link Scheduling in Interference-Limited Networks. Madan, R., Cui, S., Lall, S., Goldsmith, A., J. 2005
  • Polynomial level-set methods for nonlinear dynamical systems analysis. Wang, T., Lall, S., West, M. 2005
  • Multi-step motion planning for free-climbing robots 6th International Workshop on Algorithmic Foundations of Robotics Bretl, T., Lall, S., Latombe, J. C., Rock, S. SPRINGER-VERLAG BERLIN. 2005: 59–74
  • Joint routing, MAC, and link layer optimization in sensor networks with energy constraints IEEE International Conference on Communications (ICC 2005) Cui, S. G., Madan, R., Goldsmith, A., Lall, S. IEEE. 2005: 725–729
  • Tractable fitting with convex polynomials via sum-of-squares 44th IEEE Conference on Decision Control/European Control Conference (CCD-ECC) Magnani, A., Lall, S., Boyd, S. IEEE. 2005: 1672–1677
  • A scheme for robust distributed sensor fusion based on average consensus 4th International Symposium on Information Processing in Sensor Networks Xiao, L., Boyd, S., Lall, S. IEEE. 2005: 63–70
  • Cross-layer design for lifetime maximization in interference-limited wireless sensor networks 24th Annual Joint Conference of the IEEE Computer and Communications Societies Madan, R., Cui, S. G., Lall, S., Goldsmith, A. IEEE COMPUTER SOC. 2005: 1964–1975
  • Constructing Lyapunov-Krasovskii functionals for linear time delay systems American Control Conference 2005 (ACC) Papachristodoulou, A., Peet, M., Lall, S. IEEE. 2005: 2845–2850
  • Distributed algorithms for maximum lifetime routing in wireless sensor networks IEEE Global Telecommunications Conference (GLOBECOM 04) Madan, R., Lall, S. IEEE. 2004: 748–753
  • Cross-layer Energy Minimization in TDMA-based Sensor Networks. Cui, S., Madan, R., Goldsmith, A., Lall, S. 2004
  • Constructing Lyapunov Functions for Nonlinear Delay-Differential Equations using Semidefinite Programming. Peet, M., Lall, S. 2004
  • An Energy-Optimal Algorithm for Neighbor Discovery in Wireless Sensor Networks. Madan, R., Lall, S. 2004
  • An Approximate Dynamic Programming Approach to Decentralized Control of Stochastic Systems Cogill, R., Rotkowitz, M., Roy, B., Van, Lall, S. 2004
  • A Distributed Algorithm for Maximum Lifetime Routing in Ad Hoc Wireless Networks. Madan, R., Lall, S. 2004
  • Multi-Step Motion Planning for Free-Climbing Robots. Bretl, T., Lall, S., Latombe, J., C., Rock, S. 2004
  • Decentralized Stochastic Decision Problems and Polynomial Optimization. Cogill, R., Lall, S. 2004
  • Decentralized control subject to communication and propagation delays 43rd IEEE Conference on Decision and Control Rotkowitz, M., Lall, S. IEEE. 2004: 4990–4997
  • Control of distributed discrete-time systems on graphs American Control Conference Chen, B. D., Lall, S. IEEE. 2004: 2251–2256
  • On global stability of Internet congestion control 43rd IEEE Conference on Decision and Control Peet, M., Lall, S. IEEE. 2004: 1035–1041
  • Topology independent controller design for networked systems 43rd IEEE Conference on Decision and Control Cogill, R., Lall, S. IEEE. 2004: 1788–1793
  • On computation of optimal controllers subject to quadratically invariant sparsity constraints American Control Conference Rotkowitz, M., Lall, S. IEEE. 2004: 5659–5664
  • Control design for topology-independent stability of interconnected systems American Control Conference Cogill, R., Lall, S. IEEE. 2004: 3717–3722
  • Structure-preserving model reduction for mechanical systems Conference on Complexity and Nonlinearity in Physical Systems held in Honor of Alan Newell Lall, S., Krysl, P., Marsden, J. E. ELSEVIER SCIENCE BV. 2003: 304–18
  • Error-bounds for balanced model-reduction of linear time-varying systems IEEE TRANSACTIONS ON AUTOMATIC CONTROL Lall, S., Beck, C. 2003; 48 (6): 946-956
  • Decentralized control of unstable systems and quadratically invariant information constraints 42nd IEEE Conference on Decision and Control Rotkowitz, M., Lall, S. IEEE. 2003: 2865–2871
  • Dissipation inequalities for distributed systems on graphs 42nd IEEE Conference on Decision and Control Chen, B. D., Lall, S. IEEE. 2003: 3084–3090
  • On Structured Semidefinite Programs for the Control of Symmetric Systems. Cogill, R., Lall, S., Parrilo, P., A. 2003
  • Semidefinite programming relaxations and algebraic optimization in control 7th European Control Conference Parrilo, P. A., Lall, S. LAVOISIER. 2003: 307–21
  • A subspace approach to balanced truncation for model reduction of nonlinear control systems INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL Lall, S., Marsden, J. E., Glavaski, S. 2002; 12 (6): 519-535

    View details for DOI 10.1002/rnc.657

    View details for Web of Science ID 000175249100002

  • Decentralized control information structures preserved under feedback 41st IEEE Conference on Decision and Control Rotkowitz, M., Lall, S. IEEE. 2002: 569–575
  • An LMI solution to the robust synthesis problem for multi-rate sampled-data systems AUTOMATICA Lall, S., Dullerud, G. 2001; 37 (12): 1909-1922
  • Dimensional model reduction in non-linear finite element dynamics of solids and structures INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING Krysl, P., Lall, S., Marsden, J. E. 2001; 51 (4): 479-504
  • Dimensional Model Reduction in Non-Linear Finite Element Dynamics of Solids and Structures. International Journal for Numerical Methods in Engineering Krysl, P., Lall, S., Marsden, J., E. 2001; 51 (4): 479--504
  • A new approach for analysis and synthesis of time-varying systems IEEE TRANSACTIONS ON AUTOMATIC CONTROL Dullerud, G. E., Lall, S. 1999; 44 (8): 1486-1497
  • Asynchronous hybrid systems with jumps - analysis and synthesis methods SYSTEMS & CONTROL LETTERS Dullerud, G. E., Lall, S. 1999; 37 (2): 61-69
  • Empirical Model Reduction of Controlled Nonlinear Systems. Lall, S., Marsden, J., E., Glavaski, S. 1999
  • Model Reduction of Complex Systems in the Linear-Fractional Framework. Lall, S., Beck, C. 1999
  • Model Reduction for Analysis of Cascading Failures in Power Systems. Parrilo, P., A., Lall, S., Paganini, F., Verghes, G., C., Lesieutre, B., C., Marsden, J., E. 1999
  • Asynchronous Hybrid Systems with Jumps -- Analysis and Synthesis Methods. Systems and Control Letters Dullerud, G., Lall, S. 1999; 37 (2): 61--69
  • A New Approach for Analysis and Synthesis of Time-Varying Systems. IEEE Transactions on Automatic Control Dullerud, G., Lall, S. 1999; 44 (8): 1486--1497
  • Guaranteed Error Bounds for Model Reduction of Linear Time-Varying Systems. Lall, S., Beck, C., Dullerud, G. 1998
  • Guaranteed error bounds for model reduction of linear time-varying systems American Control Conference Lall, S., Beck, C., Dullerud, G. IEEE. 1998: 634–638
  • Convex l(2) synthesis for multidimensional systems 37th IEEE Conference on Decision and Control D'Andrea, R., Dullerud, G. E., Lall, S. IEEE. 1998: 1883–1888
  • Control of spatially varying distributed systems 37th IEEE Conference on Decision and Control Dullerud, G. E., D'Andrea, R., Lall, S. G. IEEE. 1998: 1889–1893
  • Control of Spatially-Varying Distributed Systems. Dullerud, G., D'Andrea, R., Lall, S. 1998
  • Convex l_2 Synthesis for Multidimensional Systems. CDC D'Andrea, R., Dullerud, G., Lall, S. 1998: 1883--1888
  • H-infinity synthesis for hybrid systems with jumps 1997 American Control Conference Dullerud, G. E., Lall, S. G. IEEE. 1997: 1672–1676
  • H-infinity synthesis for multi-rate hybrid systems 36th IEEE Conference on Decision and Control Lall, S. G., Dullerud, G. E. IEEE. 1997: 2035–2040
  • Analysis and synthesis tools for time-varying systems 36th IEEE Conference on Decision and Control Dullerud, G. E., Lall, S. G. IEEE. 1997: 4543–4548
  • H-infinity synthesis for hybrid systems with jumps. Dullerud, G., Lall, S. 1997
  • Localized Optimal Control of Spatiotemporal Chaos. Grigoriev, R., Lall, S., Dullerud, G. 1997
  • Analysis and Synthesis Tools for Time-Varying Systems. Dullerud, G., Lall, S. 1997
  • H-infinity Synthesis for Multi-Rate Hybrid Systems. Lall, S., Dullerud, G. 1997
  • Quasi-Decentralised Control. Utidjian, H., Maciejowsk, J., M., Lall, S. 1995
  • Robust Performance and Adaptation Using Receding Horizon H-infinity Control of Time Varying Systems. Lall, S., Glover, K. 1995
  • Riccati Differential Inequalities: Suboptimal H-infinity Controllers for Finite Horizon Time-Varying Systems. Lall, S., Glover, K. 1995
  • Optimal Discretization of a Continuous-Time Controller. Utidjian, H., Maciejowsk, J., M., Lall, S. 1995
  • Robust Control Synthesis in the Time Domain. Cambridge University Lall, S. 1995
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