摘要
A new method for the control of the speed of an ultrasonic motor and its implementation are proposed. The method is merely used by detecting the time when motor′s monitor signal reaches a non zero reference value than a zero one, the direction, in which the driving frequency of the motor should be shifted, can be promptly calculated. With the aid of a CPU and the phase locked frequency doubling technique, the motor can be steadily driven in a wide range of frequency and the optimum frequency can be captured rapidly and precisely. Experiment shows that the above method is available.
提出一种新的超声电机稳速控制原理和实现方法。该方法仅仅是检测反馈信号到达一个非零参考信号的时间而不是零参考值,即可以很快计算出稳定马达速度所需驱动信号频率的改变方向,借助于微机控制和锁相倍频技术, 实现了大的频率范围内快速准确地捕捉稳定工作点。
