Active Control of Pantograph Sliding Mode Under Fluctuating Wind Excitation

Considering the effects of fluctuating wind excitation on the dynamic performance of the pantograph-catenary coupling system, the ideal contact force between the pantograph and the catenary is taken as the control target, and the control of the pantograph is achieved through an actuator. Firstly, based on the three-mass block pantograph model, a pantograph-catenary coupling model is established for control purposes. Then, the equivalent vibration force on the contact line caused by the fluctuating wind excitation is derived, and the model of the pantograph-catenary system under fluctuating wind excitation is modified. Finally, a sliding-mode control method is adopted to design the pantograph active controller. The results indicate that the designed sliding mode controller is capable of suppressing the vibrations of the pantograph-contact wire system, thereby improving the quality of current collection.