zero motor

The structural space of thrust termination mechanism in the solid motor is very limited. In order to meet the demand that negative thrust of the motor is not less than zero, efficiency of reverse thrust must be improved as far as possible.

某固体发动机推力终止装置结构空间十分有限，为保证推力终止时发动机负推力大于等于零的要求，必须尽可能地提高反推力效率。

As the winding insulation has aged, the value is close to zero. Please rewind the motor.

由于绕组的绝缘老化, 其数值接近于零, 电机线圈需要重缠.

MCU get timing reference by zero-crossing detection. It compare the current speed feedback with the object feedback, and control the conduction phase and time using PWM mode to realize the stable speed-regulating of AC PG-motor.

单片机通过过零检测获取计时基准，比较当前转速反馈与目标反馈，采用脉宽调制PWM方式来控制三端双向可控硅开关器件的导通相位角及导通时间，实现交流PG电机的平稳调速。