The paper suggest direct self-control of indution motors, which does not use any mechanical transducer.
本文对不用任何机械传感器的直接自调整控制进行了研究。
2
The direct digital synthesizer (DDS) is used to sweep frequency for a sandwich piezoelectric transducer two admittance circles of the transducer about two different resonance frequencies is measured.
利用直接数字合成器(DDS)对夹心式换能器进行扫频，测得两个不同共振频率附近的导纳圆。
3
For the flux trajectory PWM control is the basis of direct self-control, it is also a common controlling means used by modern transducer.