电动客车AMT系统的研究与实现

Study and Implementation of Automatic Mechanical Transmission for an Electric Bus

研究适用于电动客车的电控机械式自动变速系统(AMT),实现无离合器换挡控制.按照AMT系统设计准则研制了电动客车AMT.引入CAN总线技术,实现了AMT与交流电机的协调控制.提出了电动客车AMT换挡控制策略,改善换挡品质.对ECU进行了电磁兼容性设计,使之能正常工作.在交通部公路试验场进行的试验表明,所研制的电动客车AMT系统达到了预定的技术指标.

An automatic mechanical transmission （AMT） system has been developed for an electric bus. In order to realize collaborative control between AMT and the induction motor and to improve the shift quality, controller area network（CAN） bus technology is introduced, and the gear-shifting control method with the AMT has been proposed. Considering the unfavorable electromagnetic environment existing in the electric bus, electromagnetic compatibility design for AMT ECU is made. Experimental results showed that using the AMT system and corresponding gear-shifting control methods, the drive and economical performances of the car can be much improved.