基于矢量匹配的扰动力矩消除方法

发布时间：2018-02-07 14:24

本文关键词： 飞行器试验技术电-液等效法矢量匹配位置扰动幅相辨识　出处：《兵工学报》2016年02期 　论文类型：期刊论文

【摘要】：随着电机制造和驱动技术的不断发展,在航空航天器舵机地面测试中电机正在逐渐替代液压装置,并成为中小功率负载模拟器的首选驱动部件。由于电动、液压系统数学模型间存在相似性,将液压系统阀控缸模型特征方程的分解方法引申到电机加载系统模型的分解中,得到了电动负载模拟器结构参数与位置扰动力矩频域特性的对应关系,这个方法可称为电-液等效法。针对电动负载模拟试验中常用的扫频试验,提出了基于幅相辨识和遗传算法的矢量匹配法以消除扰动力矩。通过AMESim仿真和电动负载模拟试验台上的验证表明,矢量匹配法可将加载力矩控制误差的标准差控制在该电动负载模拟器额定加载范围(±15 N·m)的1%以内。该方法较之其他方法具有适应能力强、简单灵活等优点,可大大提高负载模拟器在正弦位置扰动下的加载精度。
[Abstract]:With the continuous development of motor manufacturing and driving technology, motor is gradually replacing hydraulic device in ground test of aeronautical spacecraft steering gear and becomes the preferred driving component of medium and small power load simulator. There is similarity between mathematical models of hydraulic system. The decomposition method of characteristic equation of hydraulic system valve controlled cylinder model is extended to the decomposition of motor loading system model. The corresponding relation between the structural parameters of the electric load simulator and the frequency domain characteristic of the position disturbance moment is obtained. This method can be called the electro-hydraulic equivalent method. A vector matching method based on amplitude and phase identification and genetic algorithm is proposed to eliminate disturbance torque. The results of AMESim simulation and electric load simulation test bench show that, The vector matching method can control the standard deviation of the loading torque control error within 1% of the rated loading range (卤15 N 路m) of the electric load simulator. This method has the advantages of strong adaptability, simplicity and flexibility, compared with other methods. The loading accuracy of the load simulator under sinusoidal position disturbance can be greatly improved.
【作者单位】：北京交通大学机械与电子控制工程学院;
【基金】：北京高等学校青年英才计划项目(YETP0567)
【分类号】：V249.1

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