ABNORMALITY DETECTION DEVICE, MOTOR DEVICE, ABNORMALITY DETECTION METHOD, AND DRIVE CONTROL METHOD OF MOTOR

• Main Authors: KAIZU HIROYUKI, TERADA MITSUNARI, ZHOU XIAO
• Format: Patent
• Language: English; Japanese
• Published: 02.04.2020
• Subjects: CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

To provide an abnormality detection device that can promptly detect the abnormality of a drive circuit.SOLUTION: A control circuit unit 3 detects the change of phase of a Hall signal Sh in which the phase changes in response to the revolution of a rotor of a motor 20, and times the change of phase of the Hall signal Sh according to the detection timing of it. In addition, the control circuit unit 3 compares the result of a first timing with the result of a second timing that is obtained after the result of the first timing. The control circuit unit 3 determines whether or not the driving state of the motor 20 is abnormal based on the comparison results between the first timing and the second timing.SELECTED DRAWING: Figure 3 【課題】駆動回路の異常を速やかに検知できる異常検知装置を提供する。【解決手段】制御回路部３は、モータ２０のロータの回転に対応して位相が変化するホール信号Ｓｈの位相の変化を検出し、ホール信号Ｓｈの位相の変化の検出タイミングに応じた計時を行う。そして、制御回路部３は、第１の計時結果と、第１の計時結果が得られた後に得られた第２の計時結果とを比較する。制御回路部３は、第１の計時結果と第２の計時結果との比較結果に基づいて、モータ２０の駆動状態が異常であると判定する。【選択図】図３