关键词: 半主动悬架；双电磁阀 CDC；模型预测控制；MATLAB/Simulink

Abstract: Aiming at the control strategy problem of the dual-solenoid continuous damping control (CDC) damper, this paper proposes a semi-active suspension control algorithm based on model predictive control (MPC). Firstly, an interpolation surface model for the dual-solenoid CDC damper and a quarter-vehicle vertical dynamics model are established, upon which a discrete state-space equation is constructed. Subsequently, an MPC controller is designed based on the prediction model. Performance indices and a cost function are formulated, and constraints on the amplitude and rate of change of the control input are introduced, transforming the solution of the control law into a constrained quadratic programming problem. Finally, the proposed method is validated through simulations on the MATLAB/Simulink platform. The results indicate that, compared to a traditional passive suspension, the proposed algorithm can significantly improve the vehicle body acceleration,tire dynamic deflection, and suspension dynamic deflection metrics, demonstrating superior comprehensive performance.

Key words: semi-active suspension; dual-solenoid continuous damping control; model predictive control; MATLAB/Simulink