Title :
Reduction of controller fragility by pole sensitivity minimization
Author :
Whidborne, James F. ; Istepanian, Robert S H ; Wu, Jun
Author_Institution :
Div. of Eng., King´´s Coll., London, UK
fDate :
2/1/2001 12:00:00 AM
Abstract :
Presents a method for the reduction of controller fragility. The method is based on the sensitivity of closed-loop poles to perturbations in the controller parameters. By means of a state space parameterization of the controller, the closed-loop pole sensitivity can be reduced. A controller fragility measure based on the closed-loop pole sensitivity is proposed. Conditions for the optimal state-space realization of the controller are presented, along with a numerical method for obtaining the solution
Keywords :
closed loop systems; control system synthesis; feedback; poles and zeros; sensitivity; stability; state-space methods; closed-loop poles; controller fragility; optimal state-space realization; pole sensitivity minimization; state space parameterization; Control systems; Eigenvalues and eigenfunctions; Hardware; Industrial control; Open loop systems; Optimal control; Process design; Stability; State-space methods; Uncertainty;
Journal_Title :
Automatic Control, IEEE Transactions on
