System response testing for electromechanical actuator systems

Aspects of the invention relate to a diagnostic device (100) for testing an electromechanical actuator system of a vehicle (500). The diagnostic device includes one or more controllers (110) and is configured to: generate a torque demand signal (155) corresponding to a torque demand profile (300) configured to cause an actuator of the electromechanical actuator system to modify a suspension (402) of the vehicle; sending the torque demand signal to an electromechanical actuator system of the vehicle (404); recording a suspension characteristic of the vehicle in response to the application of the torque demand signal (406); and outputting the recorded suspension characteristics of the vehicle (408). 本发明的各方面涉及一种用于测试车辆(500)的机电致动器系统的诊断装置(100)。该诊断装置包括一个或更多个控制器(110)，并且该诊断装置被配置成：生成与扭矩需求曲线(300)相对应的扭矩需求信号(155)，该扭矩需求曲线被配置成使机电致动器系统的致动器修改车辆的悬架(402)；将扭矩需求信号发送至车辆的机电致动器系统(404)；响应于扭矩需求信号的施加而记录车辆的悬架特性(406)；以及输出所记录的车辆的悬架特性(408)。