According to the features of the carpet washes drying machine, a synchronous speed controls system based on PLC and the swinging arm compensator was introduced.
根据铁路客车地毯清洗干燥机的工艺特点，研制了一种用PLC和摆式松紧架实现的同步控制装置。
Because the AC asynchronous motor 'synchronous speed is determined by the frequency, we can control the AC asynchronous motor' speed by changing the supply power's frequency.
交流变频调速系统是利用异步交流电动机的同步转速随频率变化的特性，通过改变电机的供电频率而进行调速。
The coupled dc motor can be adjusted so that the speed of the system is higher than the synchronous speed and the system rotates in the same direction as the stator rotating field.
所连接的直流电动机可以这样调整使得其转速高于同步转速且旋转方向与定子旋转磁场的方向一致。
According to the requirements of synchronous speed control of series conveying belt, several patterns which could realize the synchronous speed control under frequency conversion was analyzed.
针对多级胶带输送机同步运行要求，分析了胶带机变频拖动同步运行实现的几种模式。
According to the requirements of synchronous speed control of series conveying belt, several patterns which could realize the synchronous speed control under frequency conversion was analyzed.
针对多级胶带输送机同步运行要求，分析了胶带机变频拖动同步运行实现的几种模式。
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