Lab Home | Phone | Search
Center for Nonlinear Studies  Center for Nonlinear Studies
 Home 
 People 
 Current 
 Affiliates 
 Visitors 
 Students 
 Research 
 ICAM-LANL 
 Publications 
 Conferences 
 Workshops 
 Sponsorship 
 Talks 
 Colloquia 
 Colloquia Archive 
 Seminars 
 Postdoc Seminars Archive 
 Quantum Lunch 
 Quantum Lunch Archive 
 CMS Colloquia 
 Q-Mat Seminars 
 Q-Mat Seminars Archive 
 P/T Colloquia 
 Archive 
 Kac Lectures 
 Kac Fellows 
 Dist. Quant. Lecture 
 Ulam Scholar 
 Colloquia 
 
 Jobs 
 Postdocs 
 CNLS Fellowship Application 
 Students 
 Student Program 
 Visitors 
 Description 
 Past Visitors 
 Services 
 General 
 
 History of CNLS 
 
 Maps, Directions 
 CNLS Office 
 T-Division 
 LANL 
 
Friday, August 13, 2010
11:00 AM - 12:00 PM
CNLS Conference Room (TA-3, Bldg 1690)

Postdoc Seminar

Control with Limited Information and Unreliable Feedback

Yoav Sharon
University of Illinois at Urbana-Champaign

We consider control systems where the feedback information has special characteristics such as quantization and faulty measurements. These characteristics may be the result of using low cost sensors and limited bandwidth channels. Using feedback with these characteristics we seek to achieve stability while addressing the adverse conditions which arise in most control systems. These conditions include external disturbances, model uncertainties and unknowns, and delays. We start by showing how to achieve the nonlinear Input to State Stability and disturbance rejection using dynamic quantization. We also show that this stability is maintained under small model uncertainties and delays. We then show under which conditions robustness to faulty measurements can be achieved using tools from Compressed Sensing, while maintaining stability to measurement noise. We finish by presenting an application, automatic landing controller using a camera for feedback, in which the feedback has these characteristics. We show that addressing these special characteristics in this application is required in order to achieve the desired performance.

Host: Misha Chertkov