Design of aircraft pitching angle control system based on H.INF. control

The H∞ control theory is applied to the design of aircraft pitching angle control system.Firstly,the control system design is converted to the H∞ standard control problem based on the interference suppression principle.Secondly,augmented controlled object is constructed by selecting proper weighting functions.Finally,the Matlab robust control tool box is used to calculate the pitching angle controller.Analysis in frequency domain and simulation in time domain show that the control system has good nominal and robust performance.