两相交流伺服电机动态性能的研究

对于两相交流电机的速度伺服系统,分析在幅值控制时系统的机械特性与调节特性,提出了影响两相交流伺服电机动态性能的因素是系统的机械时间常数及增益系数的变化。为了防止因机械时间常数及增益系数的变化而引起的动态特性变差,采用一种简易跟随模型参考自适应控制方法,通过模型与自适应机构的调节作用,改善两相交流伺服电机系统的动态特性和控制精度。计算机仿真结果表明,电机的动态持性良好。

An Improvement on Dynamic Characteristic of Two-phase Servo Motor

For the speed servo system of the two-phase motor, analyzing its mechanical property and adjusting property while it is worked by amplitude control, factors to affect the two-phase motor dynamic characteristic are proposed, which are changes of its mechanical time constant and its gain factor. To prevent the dynamic characteristic of the system from being worse, as changes of its mechanical time constant and its gain factor, a simple following model reference adaptive control method can be used to improve the dynamic characteristic of the system and increase its controlling precision, by adjusting the model and the self-adaptive set. Computer simulation shows its availability finally.