Title :
Performance bounds on state-feedback controllers with network delay
Author :
Bhave, Ajinkya Y. ; Krogh, Bruce H.
Author_Institution :
Dept. of Electr. & Comput. Eng., Carnegie Mellon Univ., Pittsburg, PA, USA
Abstract :
This paper describes a convex optimization approach to bound the performance degradation of control systems subject to network loop delay. We consider a linear time-invariant continuous-time plant connected over a communication network to a remote controller. The network introduces bounded but time-varying delays between the controller and plant. We establish an upper bound on the worst-case performance degradation due to the network delays as a function of the delay bound, which can be used as a design parameter for the networked implementation. Numerical simulation results illustrate the degree of conservativeness of the bound.
Keywords :
continuous time systems; delays; linear systems; optimisation; telecontrol; time-varying systems; continuous-time system; control systems degradation; convex optimization; linear time-invariant system; network loop delay; remote controller; state-feedback controllers; time-varying delays; Communication networks; Communication system control; Control systems; Degradation; Delay effects; Delay estimation; Medical control systems; Sampling methods; Timing; Upper bound;
Conference_Titel :
Decision and Control, 2008. CDC 2008. 47th IEEE Conference on
Conference_Location :
Cancun
Print_ISBN :
978-1-4244-3123-6
Electronic_ISBN :
0191-2216
DOI :
10.1109/CDC.2008.4739330