Study on Self-Optimizing Integrated Skyhook Control Algorithm of Semi-active Suspension System

With the weight-lightening and speed-raising of the railway vehicle, the ride comfort of the vehicle gets worse. Employing semi-active suspension system to the vehicle is one of effective approaches to improving the lateral ride performance. Skyhook control algorithm is widely applied in practice as complex dynamics modeling is not necessary and fewer sensors are needed compared with other algorithms. A self-optimizing skyhook control algorithm which combines acceleration skyhook control algorithm with traditional velocity skyhook control algorithm is proposed based on analyzing the latter algorithm in the paper. The simulation results show that the algorithm is more effective on the control of the root mean square (RMS) and ride performance of literal acceleration compared with the traditional one, and the convergence rate is high