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    • 1. 发明授权
    • Motor Apparatus and control method therefor
    • 电机及其控制方法
    • US06670784B2
    • 2003-12-30
    • US10165456
    • 2002-06-07
    • Yasuharu OdachiTatsuo OgawaShoichi Ieoka
    • Yasuharu OdachiTatsuo OgawaShoichi Ieoka
    • H02P146
    • H02P6/21
    • A speed control unit computes a instructed current based on an error between a instructed speed and an estimated speed. A current control unit outputs a reference voltage corresponding to an error between the instructed current and a detected motor current. By adding estimated speed electromotive force to the reference voltage, a motor-applied voltage is generated and a synchronous motor is driven. An estimation unit computes the estimated position, estimated speed, and estimated speed electromotive force of the synchronous motor. By supplying a motor current of a predetermined pattern when the synchronous motor begins to be driven, the rotor of the synchronous motor is set in a default position. The default position is used as an initial value of an estimated position.
    • 速度控制单元基于指示速度和估计速度之间的误差来计算指示的电流。 电流控制单元输出与指示电流和检测到的电动机电流之间的误差相对应的参考电压。 通过将估计的速度电动势添加到参考电压,产生电动机施加的电压并驱动同步电动机。 估计单元计算同步电动机的估计位置,估计速度和估计速度电动势。 当同步电动机开始被驱动时,通过提供预定模式的电动机电流,将同步电动机的转子设定在默认位置。 默认位置用作估计位置的初始值。
    • 2. 发明授权
    • Air conditioner
    • 冷气机
    • US06725681B2
    • 2004-04-27
    • US10304624
    • 2002-11-26
    • Taku AdaniyaMasahiro KawaguchiShoichi IeokaYasuharu OdachiKazuhiko MinamiTomoharu Arai
    • Taku AdaniyaMasahiro KawaguchiShoichi IeokaYasuharu OdachiKazuhiko MinamiTomoharu Arai
    • F25B100
    • B60H1/3208B60H1/3225
    • An air conditioner for air conditioning the interior of a compartment includes a compressor and an electric motor. The compressor compresses refrigerant gas and changes the displacement. The electric motor drives the compressor. A motor controller rotates the motor at a constant reference speed. A detection device detects information related to the thermal load on the air conditioner. A current sensor detects the value of current supplied to the electric motor. A controller controls the compressor based on the detected thermal load information and the detected current value. The controller computes a target torque of the compressor based on the thermal load information. In accordance with the computed target torque, the controller computes a target current value to be supplied to the electric motor. The controller further controls the displacement of the compressor such that the detected current value matches the target current value.
    • 用于空调室内的空调包括压缩机和电动马达。 压缩机压缩制冷剂气体并改变位移。 电动机驱动压缩机。 电机控制器以恒定的参考速度旋转电机。 检测装置检测与空调的热负荷有关的信息。 电流传感器检测提供给电动机的电流值。 控制器基于检测到的热负载信息和检测到的电流值来控制压缩机。 控制器基于热负载信息计算压缩机的目标转矩。 根据计算出的目标转矩,控制器计算要提供给电动机的目标电流值。 控制器还控制压缩机的位移,使得检测到的电流值与目标电流值匹配。
    • 6. 发明申请
    • Insulation resistance decrease detector for industrial vehicle
    • 工业车辆绝缘阻力下降检测器
    • US20090108850A1
    • 2009-04-30
    • US12286206
    • 2008-09-29
    • Tomohiro YamagamiShoichi Ieoka
    • Tomohiro YamagamiShoichi Ieoka
    • G01R31/02
    • G01R31/1272G01R27/025G01R31/005
    • An insulation resistance decrease detector for an industrial vehicle is disclosed. The detector includes a coupling capacitor, a sensing resistor, an AC voltage applying section having a first terminal and a second terminal, a voltage detecting section, and a determining section. The AC voltage applying section applies an AC voltage of a predetermined frequency to the vehicle body through the sensing resistor and the coupling capacitor. The voltage detecting section detects the voltage at a node between the sensing resistor and the coupling capacitor. The determining section determines that a resistance value of the insulation resistor has decreased when the level of voltage detected by the voltage detecting section becomes less than or equal to a predetermined level.
    • 公开了一种用于工业车辆的绝缘电阻降低检测器。 检测器包括耦合电容器,感测电阻器,具有第一端子和第二端子的AC电压施加部分,电压检测部分和确定部分。 交流电压施加部通过检测电阻和耦合电容向车体施加预定频率的交流电压。 电压检测部分检测感测电阻器和耦合电容器之间的节点处的电压。 当由电压检测部检测到的电压的电平变得小于或等于预定电平时,确定部分确定绝缘电阻器的电阻值已经降低。