電動アクチュエータおよびその制御方法

Motor actuator and control method therefor

Abstract

PROBLEM TO BE SOLVED: To constantly product an optimal torque, regardless of fluctuations in the applying voltage or the ambient temperature by regulating the driving frequency of a motor according to the fluctuation in the applying voltage. SOLUTION: A motor actuator 1 is connected with a controller 20 for controlling the drive frequency thereof. The controller 20 incorporates an inverter, for example, so as to freely alter the frequency of a voltage being applied to a motor 2. The controller 20 is provided with a signal 21 of the voltage being applied to the stepping motor 2 and a signal 22 of the ambient temperature of the stepping motor 2. The applying voltage and the ambient temperature can be detected by an appropriate means on the periphery. According to the arrangement, a desired torque can be produced constantly, regardless of the fluctuations in the applying voltage or the ambient temperature and adverse effects on the other members can be eliminated, while preventing locking phenomenon.
(57)【要約】 【課題】 モータ印加電圧や周囲温度に変動があっても 常に一定のトルクを出力可能な、車両用空調装置に用い て好適な電動アクチュエータを提供する。 【解決手段】 ステッピングモータを駆動源とする電動 アクチュエータにおいて、印加電圧または/および周囲 の雰囲気温度の変動に応じてモータの駆動周波数を調整 する制御手段を有することを特徴とする電動アクチュエ ータ、およびその制御方法。

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Cited By (3)

    Publication numberPublication dateAssigneeTitle
    FR-2906419-A1March 28, 2008Valeo Vision SaStepper motor actuator controlling circuit for e.g. optical module motor vehicle`s headlight, has microcontroller to modify set point speed of motor when temperature and voltage are different from threshold value or operating range
    US-6827141-B2December 07, 2004International Truck Intellectual Property Company, LlcVehicle heating and air conditioning modules
    US-6962195-B2November 08, 2005International Truck Intellectual Property Company, LlcVehicle heating and air conditioning modules