基于H∞理论的主动悬架状态反馈控制.

In order to make active air suspension have a better vibration control effect while driving, dynamic equation of parameter uncertainty two-degree-of-freedom quarter-vehicle suspension model and non-stationary pavement excitation model are established, analyzing and optimizing active suspension control under linear matrix inequalities with robust H∞ control theory. Under the time domain hard constraints, H∞ state feedback control strategy is proposed and used in the design of the active suspension control system of the quarter vehicle model. The stability of the controller is obtained through time domain analysis and robust parameter stability analysis. For non-steady running roads, the use of a robust H∞ control strategy can effectively improve the riding comfort under the given constraint control force, reduce the body acceleration by about 40% and meet the requirements of limit suspension dynamic deflection of 0.08 m and tire dynamics load of 1 500 N, which improves the vehicle’s handling stability and ride comfort. [ABSTRACT FROM AUTHOR]