Multiresolution tracking control design for non-minimum phase systems

This paper investigates inversion of non-minimum phase systems using multiresolution analysis for tracking control. Impulse response of non-minimum phase systems is first decomposed into wavelet basis functions. An efficient representation of the original system is obtained by eliminating insignificant coefficients of wavelet basis functions. A multiresolutional inversion is then designed based on the dual wavelet basis functions to track desired reference signals. Simulation results show the effectiveness of the proposed approach.