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发明授权
CN105659491B 电动机控制装置 有权

电动机控制装置
摘要：
为了得到即使是不具有凸极性的同步电动机，也能够在动作开始后迅速地对圆盘错位故障进行检测而对异常动作进行抑制的电动机控制装置，特征在于，具有：电动机速度检测部，其根据与作为同步电动机的电动机连接的编码器(位置传感器)的输出信号，对电动机检测速度进行检测并输出；电动机电角检测部，其根据编码器的输出信号，对电动机检测电角进行检测并输出；电动机电角推定部，其将电动机电压及电动机电流、和电动机检测速度作为输入，根据电动机电压及电动机电流，对电动机推定电角进行推定并输出；以及切换部，其将电动机检测电角及电动机推定电角作为输入，根据电动机检测电角及电动机推定电角，判定编码器是否正常动作，在编码器正常动作时将电动机检测电角输出，在编码器未正常动作时将电动机推定电角输出。
摘要（英）：

A motor control device includes a motor-speed detection unit detecting and outputting a detected motor speed based on an output signal of an encoder connected to a motor that is a synchronous motor; a motor electric-angle detection unit detecting and outputting a detected motor electric angle based on the output signal; a motor electric-angle estimation unit receiving a motor voltage, a motor current, and the detected motor speed, and estimating and outputting an estimated motor electric angle based on the motor voltage and the motor current; and a switching unit receiving the detected motor electric angle and the estimated motor electric angle, determining whether the encoder is operating normally based on the detected motor electric angle and the estimated motor electric angle, outputting the detected motor electric angle when the encoder is operating normally, and outputting the estimated motor electric angle when the encoder is not operating normally.

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