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CONTROLLER AND STARTING METHOD OF SYNCHRONOUS MOTOR AND METHOD AND EQUIPMENT FOR DETECTING ABNORMALITY OF SYNCHRONOUS MOTOR
CONTROLLER AND STARTING METHOD OF SYNCHRONOUS MOTOR AND METHOD AND EQUIPMENT FOR DETECTING ABNORMALITY OF SYNCHRONOUS MOTOR
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机译:同步电动机的控制器和启动方法以及检测同步电动机异常的方法和设备
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摘要
PROBLEM TO BE SOLVED: To drive a synchronous motor accurately and optimally, by storing optimum initial-phase correction quantity at a time when a moving section is placed at the position of a limit switch detecting to reach a movable limit of the moving section of the synchronous motor, and converging initial-phase correction quantity to the optimum value. SOLUTION: A CPU 1 outputs a current command through a D/A converter 2, and a power amplifier 3 flows a current proportional to the current command through a synchronous type linear motor 6. A counter 5 counts positional pulses, stoppers 81, 82 prevent movement more than a specified stroke of a moving section 7 driven by the motor 6, and limit sensors 91, 92 detect presence of the moving section at the end of the stroke. An optimum initial-phase correction value at a time when the moving section 7 is placed at positive-side and negative-side stroke ends is measured beforehand and stored in a nonvolatile memory 4, and positional control algorithm, the vector control of a motor current and initial-phase correction quantity detecting processing are executed by the CPU 1.
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