Energy consumption badly restricts the development and applied research of active suspension system . so the concept of compound suspension is put forward . the device consists of the passive shock absorber and an electromagnetic actuator 基于车辆系统的能源消耗是制约主动悬架控制技术发展及实用化研究的主要问题，将一种电磁式主动执行器与被动减振器构成复合悬架系统。
