Application of the nonlinear transformation and linear state state feedback control to nonlinear hydraulic servo system

비선형 유압 서보시스템의 비선형 변환 및 이에 대한 선형제어에 관한 연구

In this paper feedback linearization of valve-controlled nonlinear hydraulic velocity control system is studied. The $C^{\infty}$ nonlinear transformation T is obtained, and it is shown that this transformation is global one. Linear equivalence of nonlinear hydraulic velocity control system is obtained by this global nonlinear transformation, and linear state feedback control law is applied to this linear model. It is shown that this transformation method is to the linear approximation by simulation study..