Title :
Robustness of full order and restricted structure optimal control systems
Author_Institution :
Ind. Control Centre, Strathclyde Univ., Glasgow, UK
Abstract :
A simple method of modifying and improving the robustness of LQG optimal controllers is considered. A sensitivity costing term is introduced into the cost index and a fictitious disturbance signal, that affects robustness margins, is discussed. The influence is somewhat different on full-order and restricted structure designs and this is explored.
Keywords :
continuous time systems; control system synthesis; linear quadratic Gaussian control; linear systems; optimal control; robust control; sensitivity; LQG optimal controllers; continuous time systems; control system synthesis; cost index; fictitious disturbance signal; full order optimal control systems; linear quadratic Gaussian optimal controllers; linear systems; restricted structure designs; restricted structure optimal control systems; robustness; sensitivity; Buildings; Colored noise; Costing; Industrial control; Noise measurement; Noise robustness; Optimal control; Polynomials; Robust control; White noise;
Conference_Titel :
Decision and Control, 2003. Proceedings. 42nd IEEE Conference on
Print_ISBN :
0-7803-7924-1
DOI :
10.1109/CDC.2003.1272565
