Frequency Stability Criteria of Multivariable Nonlinear Control System

Cao Jianfu£¬Han Chongzhao  (Xi'an Jiaotong University£¬Xi'an 710049, China£©
Cao Fuminª¬(Harbin Industry University)

Abstract£ºThe stability of multivariable nonlinear control system is discussed in connection with the generalized frequency response function matrix. The frequency stability criteria are proposed for the polynomial class of MIMO nonlinear control system. It is more useful in practice than Lyapunov method. Finally, simulation example is given to verify the results.
Keywords: nonlinear control system;stability;generalized frequency response function matrix