화학공학소재연구정보센터
International Journal of Control, Vol.62, No.5, 1209-1216, 1995
Optimal Nonlinear, But Continuous, Feedback-Control of Systems with Saturating Actuators
This paper presents a modification of the optimal saturating feedback control laws given by Frankena and Sivan (1979) and Ryan (1982 a) for asymptotically stable systems. Unlike their results, which involve bang-bang action and singular extremals, the modified control law is continuous. Specifically, the new control law is linear inside a cylinder set and saturated elsewhere. Using steady-state Hamilton-Jacobi-Bellman theory, this control law is shown to be optimal for a modified performance functional with a discontinuous integrand.