摘  要：根据车辆底盘系统动力学方程，对半主动悬架进行了简易高效的AMESim建模。基于微处理器C8051F020研制了半主动悬架步进电机控制系统并进行了台架试验。结果表明所建的模型正确，控制系统有效实现了对半主动悬架的控制，验证了步进电机控制方案的可行性。
关键词：半主动悬架；步进电机；控制；AMESim

Abstract: AMESim model of semi-active suspension(SAS)was brought forward according to kinetic equations of vehicle chassis.SAS step motor control system was developed based on C8051F020 MCU, and carried out SAS bench test for further verification.Results of simulation and test show SAS control system is validity, and it proved the feasibility of step motor control method.
Key words: semi-active suspension; step motor; control; AMESim