关键词: 车辆工程, 跨座式单轨, 弓网耦合, 主动控制

Abstract: In the high-speed travel of monorail trains, the pantograph head often vibrates to impact the rigid catenary, which reduces the current collection quality and service life of the pantograph catenary. Therefore, an active control method for improving the pantograph-catenary relationship was proposed. On this basis, the linear two-degree-of-freedom dynamic model of monorails pantograph-catenary coupling system and the double-closed-loop control driving model of brushless DC motor were established respectively. Then the fractional-order PID control algorithm was combined to complete the modeling of the whole active control system. Finally, the response of the passive control and active control contact force of the pantograph and the lift of the pantographs head at different speeds of the train were compared and analyzed, and the response speed of the active control was also analyzed. The experimental results show that the response speed of the proposed active control method can fully meet the adjustment requirements of the pantograph-catenary relationship under high-speed conditions, and can significantly reduce the contact force fluctuation, reduce both collision and abrasion of pantograph-catenary as well as improve its service life.

Key words: vehicle engineering, straddle monorail, pantograph-catenary coupling, active control