This paper considers the problem of designing an observer for use in a linear quadratic optimal feedback control scheme so as to minimize the effects of small departures in the plant parameters from their nominal values.

Sensitivity reducing observers for optimal feedback control

The problem of constructing an "observer" to enable us to implement an approximate low sensitivity control of distributed parameter system is examined. The control is applied at the boundary of the spatial region and the part of the control which depends on the sensitivity variables and the missing state variables is implemented via the observer.

Implementation of a low sensitivity control of distributed parameter systems via an observer

The sensitivity of an observer to variations in the parameters of the system being observed is considered. An equation is developed for the error in the observer output caused by variations in the system parameters. An analogue computer design procedure is utilized to minimize a quadratic performance index. An example is provided to illustrate this procedure.

M. Missaghie-Mamaghanie

Papers

Optimal observer design to minimize the effect of system parameter variations