화학공학소재연구정보센터
IEEE Transactions on Automatic Control, Vol.43, No.2, 237-241, 1998
An algebraic criterion for robust stability of linear control systems
A new robust stability test for linear control systems is described. The condition at which robust stability is violated is transformed into an equivalent problem in which the existence of a real root of a multivariable polynomial is investigated, This multivariable problem is reduced to that of the solvability of a set of univariable polynomial equations in real numbers, for which a number of efficient numerical methods are available, The use of the method is illustrated in the design of feedback control for an open-loop unstable batch chemical reactor.