Study on multidisciplinary integrated design of high-speed pantograph based on parameters design, dynamics analysis and optimal control

A multidisciplinary integrated design concept is firstly applied to synthesize optimum pantograph. Three disciplines are involved in the integrated design of the high-speed pantograph. They are the kinematics, the dynamics and the control. In this study, the objective function of the kinematics involves the curve of pan-head to guarantee the kinematics stability. Genetic algorithm is proposed to get the optimum design parameters of pantograph. Based on design parameters of high-speed pantograph, the lumped mass model is deduced. So, the dynamic contact force is obtained. When a high-seed train is running, the contact pressure of the pantograph-catenary is changed. So, the objective function of the active control is to minimize the contact pressure fluctuation by using optimal control. The integrated design pantograph not only satisfies the kinematics, the dynamics and the control constraints but also has synthesized optimum pantograph. The results lay a theoretical foundation to develop the new high-speed pantograph.