PROBLEM TO BE SOLVED: To provide a motor control device that can protect highly reliably a motor opening switch, and an electric power steering device mounted with the same.SOLUTION: A motor control device, which drives and controls a motor 20 and has a motor opening switch 140 constituted of FETs connected between an inverter 106 and the motor 20, detects assist states of sensors and the inverter, turns ON/OFF control of the inverter 106 and comprises: a control portion 120; a motor rotation speed detecting portion 132; an energy calculating portion 121; a determining portion 122 that compares energy with a safe operation area of the FET, and when the energy falls within the safe operation area, turns OFF or ON all FETs of the motor opening switch; and a state detecting portion 125 that detects presence and absence of abnormality. The device, when the state detecting portion 125 does not detect the abnormality, turns ON the control of the inverter 106 and when detecting the abnormality, turns OFF the control of the inverter 106.SELECTED DRAWING: Figure 6
【課題】モータ開放スイッチの保護を、信頼性高く行うことができるモータ制御装置及びそれを搭載した電動パワーステアリング装置を提供する。【解決手段】モータ20を駆動制御し、インバータ106とモータ20との間にFETで成るモータ開放スイッチ140が接続されているモータ制御装置において、センサ類及びインバータのアシスト状態を検出し、インバータ106の制御をON/OFFすると共に、制御部120と、モータ回転数検出部132と、エネルギー演算部121と、エネルギーをFETの安全動作領域と比較し、エネルギーが安全動作領域の領域内となったときに、モータ開放スイッチの全てのFETをOFF又はONする判定部122と、異常の有無を検出する状態検出部125とを具備し、状態検出部125が異常を検出していないときにインバータ106の制御をONにし、異常を検出したときにインバータの106制御をOFFする。【選択図】図6
MOTOR CONTROL DEVICE AND ELECTRIC POWER STEERING DEVICE MOUNTED WITH THE SAME
モータ制御装置及びそれを搭載した電動パワーステアリング装置
2016-09-15
Patent
Electronic Resource
Japanese
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