使用增量式光电编码器测量电机位置的伺服系统中,在电机启动时,普遍存在无法准确测量出电机转轴初始位置的问题。
The inaccurate measurement of initial position of motor rotor when the motor starts is a problem existing in a servo system applying increment photo-electricity pulse coder.
在启动时,蓄电池提供电能能使启动电机和点火系运转。
A battery provides the electric power to operate the starting motor and the ignition system during cranking.
在启动时,没有反电动势,在无传感器模式下电机的位置不能检测到。
At startup, there is no back-EMF due to the stationary motor, and the motor position cannot be detected in sensorless mode.
结果表明,在启动时电机的转速和转子的转速是不同步的;
The results show that the rotating speeds of the motor and rotor are not synchronal during starting up.
当启动频率较高时,启动时会造成失步,而停止时由于惯性作用又会发生过冲,所以在步进电机控制中必须要采取升降速控制措施。
When the startup speed is higher, stepping motor will lose steps. While stopping, it will also lose steps because of inertia. So, it needs to take speed control measures on control of stepping motor.
给电机加一组辅助线圈,只在启动时工作,正常后它就断开。
Give motor electricity a circle assistant loop, and it works only when the motor starts and it will break up after the current goes regularly.
给电机加一组辅助线圈,只在启动时工作,正常后它就断开。
Give motor electricity a circle assistant loop, and it works only when the motor starts and it will break up after the current goes regularly.
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