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| Design of adaptive control system of electric load simulation system |
| CHEN Hao1, WU Ding-ding1, RAO Guo-xi2, ZHAO Xu-chang2 |
1. College of Mechanical and Electrical Engineering, Southwest Petroleum University, Chengdu 610500, China;
2. School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, China |
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Abstract In order to eliminate the redundant moment of force of the electric load simulation system (ELSS) and improve the output accuracy of the system loading torque, a kind of adaptive control method for eliminating position disturbance torque of steering engine was designed. Based on the feed forward control and adaptive control theory, the effectiveness of the method was analyzed by MATLAB simulation software and the experimental verification was carried out. Simulations and experimental results showed that the method could adaptively adjust the system loading error, and the higher the frequency of the steering engine was, the longer the tracking error could be adjusted. In the same conditions of the loading torque and amplitude phase of the steering engine, the higher the steering engine frequency was, the more obvious the inhibitory effect of the control method to the redundant moment of force was. In the same conditions of the loading torque and movement frequency of the steering engine, the greater the amplitude phase of steering engine was, the more obvious the inhibitory effect was. The method can stabilize the system in an ideal output state by the output of the reference model when the actual system parameters are unknown or gradually changing. The research results have certain reference values for the design of aircraft electric load simulator.
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Published: 28 April 2017
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电动负载模拟系统自适应控制系统设计
为了有效抑制电动负载模拟系统多余力矩，从而提高系统加载力矩的输出精度，设计了一种自适应抑制位置干扰力矩的控制方法。基于前馈控制与自适应控制原理，使用MATLAB仿真软件对该方法的有效性作了分析，并进行了试验验证。仿真与试验结果表明：该方法能自适应调节系统加载误差，且舵机运动频率越高，系统跟踪误差调节时间越长；当加载力矩和舵机运动幅值相同时，舵机运动频率越高，该控制方法对系统多余力矩的抑制效果越明显；当加载力矩和舵机运动频率相同时，舵机运动幅值越大，抑制效果越明显。该控制方法能够在系统部分参数未知或者渐变的情况下，有效抑制系统多余力矩。研究结果对飞行器电动负载模拟器的设计具有一定参考价值。
关键词：
电动负载模拟系统,
多余力矩,
自适应控制,
数值仿真,
试验验证
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