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Method and circuit arrangement for sensorless engine load detection and for controlling the motor current in accordance with the load value in stepper motors
Method and circuit arrangement for sensorless engine load detection and for controlling the motor current in accordance with the load value in stepper motors
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机译:用于无传感器发动机负载检测并根据步进电机中的负载值控制电机电流的方法和电路装置
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摘要
A method and a circuit arrangement are provided which enable a mechanical load applied to the motor shaft of a stepper motor (M) or a load angle of the stepper motor to be detected in a sensorless manner. A method and circuit arrangement are also provided which enable the motor current(s) of a stepper motor to be controlled in accordance with the load value such that the load angle is as high as possible without risking step losses, in order to maintain the current consumption of the motor as low as possible. This is achieved according by evaluating the temporal duration of the ON- and the FD-phases during the chopper control of the motor.
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