Jin Ge, Dec 2014

Jin Ge is a graduate student working with Gabor Orosz who will be visiting on 11 Dec (Thu).

Schedule

• 9:45 am - meet Richard in 109 Steele Lab
• 10 - 12 pm - Networked Control Systems group meeting
• 12-1:30 - group meeting (seminar)
• 1:30 - 2:15: Yilin Mo (Ann 310)
• 2:15 - 3:00: Open
• 3:00 - 3:45: Open
• 3:45 - 4:30: Open

Talk info

Title: Linear Quadratic Regulation (LQR) for Time-Varying Systems with Delay
Thu, 12 pm -- 213 Annenberg

In this talk, linear quadratic regulation (LQR) for time-varying systems with delay is used to optimize the control gains for connected cruise control (CCC). We assume that the CCC vehicle receives kinematic information through wireless vehicle-to-vehicle (V2V) communication from several vehicles ahead. An optimized feedback law is obtained by minimizing a cost function defined by distance and velocity errors and the acceleration of the CCC vehicle on an infinite horizon. Communication delays, driver reaction times, and heterogeneity among vehicles are taken into account. We show that the feedback gains can be obtained recursively as signals from vehicles farther ahead become available, and that the optimal gains decay with the number of cars between the source of the signal and the CCC vehicle. To ensure smooth traffic flow the head-to-tail string stability is investigated and the robustness against connectivity loss and delay variations is tested. The analytical results are verified by numerical simulations of connected vehicle systems