基于微分几何法的主动悬架鲁棒H∞控制.

By means of the differential geometry method and the robust H○∞ control theory， a robust H○∞ control strategy for active seat suspension and vehicle active suspension based on differential geometry method is proposed. On the basis of establishing the three-degree-of-freedom model of the "car-chair" vehicle， considering the nonlinear characteristics of the elastic force and damping force of seat suspension and vehicle suspension， the differential geometry method and the nonlinear state feedback transformation method are applied to precisely linearize the active suspension nonlinear system. Then， the vertical accelerations of the chassis and the seat are taken as the control targets， and the robust suspension H○∞ controller of seat suspension and vehicle suspension is designed with the wheel dynamic displacement and the vehicle suspension deflection range less than the specified value as the constraint conditions. The simulation experiment with Matlab/Simulink is carried out to verify the effectiveness and feasibility of the integrated variable gain LQR control method. [ABSTRACT FROM AUTHOR]