PROBLEM TO BE SOLVED: To efficiently achieve accurate control by quickly detecting a valve switch point, in a motor drive type electric valve.SOLUTION: An electric valve device 10 comprises a motor drive type electric valve 12, a motor driver 24 driving a motor, a micro computer 22 controlling the motor driver 24, and a LIN (Local Interconnect Network) transceiver 26 for communicating with an air conditioner ECU 106. The micro computer 22 starts control of the electric valve 12 on the basis of a command from the air conditioner ECU 106; makes the motor drive in a valve close direction when starting control of the electric valve 12; detects a load of the motor on the basis of drive pulses which the motor driver 24 outputs for the drive; sets, as a valve switch point of a valve part, the drive condition at the time when the detected load reaches a predetermined reference value; and by making the motor drive on the basis of the valve switch point of the valve part, performs control such that the opening of the valve part becomes an opening corresponding to a control command value.SELECTED DRAWING: Figure 1

    【課題】 モータ駆動式の電動弁において、弁開閉点を速やかに検出し、効率良く高精度な制御を実現する。【解決手段】 電動弁装置10は、モータ駆動式の電動弁12と、モータを駆動するモータドライバ24と、そのモータドライバ24を制御するマイクロコンピュータ22と、エアコンECU106と通信するためのLINトランシーバ26とを備える。マイクロコンピュータ22は、エアコンECU106からの指令に基づいて電動弁12の制御を開始し、電動弁12の制御の開始に際してモータを閉弁方向に駆動させ、その駆動のためにモータドライバ24が出力する駆動パルスに基づいてモータの負荷を検出し、検出された負荷が所定の基準値に達したときの駆動状態を弁部の弁開閉点として設定し、弁部の弁開閉点を基準としてモータを駆動させることにより、弁部の開度が制御指令値に対応した開度となるように制御する。【選択図】図1


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    Title :

    ELECTRIC VALVE DEVICE AND ELECTRIC VALVE CONTROL DEVICE


    Additional title:

    電動弁装置および電動弁制御装置


    Contributors:

    Publication date :

    2016-12-08


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    F16K VALVES , Ventile / B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht / F25B Kältemaschinen, Kälteanlagen oder Kälteverfahren , REFRIGERATION MACHINES, PLANTS, OR SYSTEMS




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