Sensorless DC motor close-loop control module include reversing control, current loop regulating, the positive and negative rotational speed controls with speed ring etc.
无传感器闭环控制模块包括换向调节、电流环调节和速度环调节、正反转速控制等功能。
Using TI' s MSP430G2553 controlled stepper motor reversing.
说明：使用TI公司的MSP430G2553控制步进电机实现正反转。
The static strength and stiffness of the framework of motor-reversing type pumping unit is analyzed by the finite element method.
应用有限单元法对电动机换向抽油机支架进行了静态分析，计算其静强度和刚度。
To solve the problems of low efficiency and high power consumption and inconvenient parameter adjustment of beam pumping units, a motor-reversing type pumping unit is developed.
为了解决游梁式抽油机效率低、能耗高和调整参数复杂等问题，研制开发了电动机换向智能抽油机。
To achieve the four-phase stepper motor to start, stop control, reversing control.
实现对四相步进电机的启动，停止控制、正反转控制。
When the top sleeve is reversing-rotated, the contact piece leaves the inclining surface, the upright rod is bounced back upwards, and the motor circuit is cut off.
反向转动顶套时，触片离开斜面，竖杆向上弹回，马达电路被断开。
When the top sleeve is reversing-rotated, the contact piece leaves the inclining surface, the upright rod is bounced back upwards, and the motor circuit is cut off.
反向转动顶套时，触片离开斜面，竖杆向上弹回，马达电路被断开。
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