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针对电动负载模拟器的设计和实验分析问题,在负载器结构上引入了弹簧杆的弹性环节,降低了整个加载系统的有害多余力矩并提高了力矩加载的性能。建立了引入弹簧杆后负载模拟器的数学模型,分析了系统不同刚度系数对加载稳定性和快速性的影响。结果表明,可以采用舵机角速度作为前馈补偿来抑制多余力矩,加载实验的数据分析表明了引入弹簧杆的电动负载模拟器的动态响应能力。加载实验中需要跟踪正弦力矩加载指令,实际加载力矩的幅差和相差均小于10%。
In view of the design and experimental analysis of the electric load simulator, the spring link is introduced into the load-bearing structure, which reduces the unwanted extra torque of the whole loading system and improves the torque loading performance. The mathematical model of the post-load simulator with spring bar was established, and the influence of different stiffness coefficients of the system on loading stability and rapidity was analyzed. The results show that the actuator angular velocity can be used as a feedforward compensation to suppress the extra torque. The data analysis of the loading experiment shows the dynamic response capability of the electric load simulator with spring bar. Loading experiments need to follow the sinusoidal torque loading instructions, the actual load torque amplitude and phase difference of less than 10%.