利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

26 条记录 (耗时 0.026 秒)

    Method and apparatus for detecting abnormality in rotation sensor
    24.
    发明授权
    Method and apparatus for detecting abnormality in rotation sensor 失效
    用于检测旋转传感器异常的方法和装置

    公开(公告)号：US06191550B1

    公开(公告)日：2001-02-20

    申请号：US09384225

    申请日：1999-08-27

    申请人： Shigeyuki Yoshihara

    发明人： Shigeyuki Yoshihara

    IPC分类号： H02K2300

    CPC分类号： B60L11/1807 ,  B60L3/0023 ,  G01D3/08 ,  Y02T10/7005

    摘要： In a rotation sensor having a resolver attached to a rotor and a signal processing unit for angle detection for supplying a reference signal having a predetermined periodic waveform to the resolver, allowing the resolver to generate a sin signal having a waveform obtained by amplitude-modulating the reference signal by sin &thgr; and a cos signal having a waveform obtained by amplitude-modulating the reference signal by cos &thgr;, and detecting the angle &thgr; on the basis of the sin signal and cos signal, there are provided a signal processing unit for rotation detection for outputting a rotation pulse signal and a reference position signal on the basis of the angle &thgr; and a signal process abnormality detecting unit for detecting the presence or absence of an abnormality in the signal processing unit for angle detection on the basis of the angle &thgr; and an angle &thgr;′ calculated from both of the rotation pulse signal and the reference position signal of the signal processing unit for rotation detection. When an abnormality occurs in an output of the signal processing circuit for obtaining the angle of the rotor from the output of the resolver as an angle detecting apparatus, the angle cannot be accurately detected. In order to solve the problem, an apparatus and method which can detect an abnormality in an output of the signal processing circuit are provided.

    摘要翻译： 在具有附接到转子的旋转变压器和用于角度检测的信号处理单元的旋转传感器中，用于将具有预定周期波形的参考信号提供给旋转变压器，允许旋转变压器产生具有通过幅度调制 参考信号由sinθ和具有通过将参考信号幅度调制为cosθ获得的波形的cos信号，并且基于sin信号和cos信号检测角度θ，提供了一种用于旋转检测的信号处理单元 用于基于角度θ输出旋转脉冲信号和参考位置信号;以及信号处理异常检测单元，用于基于角度θ检测用于角度检测的信号处理单元中的异常的存在或不存在，以及 从信号处理单元的旋转脉冲信号和基准位置信号两者计算的角度θ' 用于旋转检测。 当信号处理电路的输出端从转换器的输出角度检测装置获得转子的角度出现异常时，不能精确地检测出角度。 为了解决这个问题，提供了一种能够检测信号处理电路的输出异常的装置和方法。

    Control apparatus for an electric vehicle
    25.
    发明授权
    Control apparatus for an electric vehicle 失效
    电动车辆用控制装置

    公开(公告)号：US5677611A

    公开(公告)日：1997-10-14

    申请号：US673121

    申请日：1996-07-01

    申请人： Shigeyuki Yoshihara ,  Hiroshi Katada

    发明人： Shigeyuki Yoshihara ,  Hiroshi Katada

    IPC分类号： B60L3/00 ,  B60L11/18 ,  G01R31/28 ,  G01R35/00 ,  H02P27/08

    CPC分类号： G01R31/2829 ,  B60L11/1803 ,  B60L3/0023 ,  G01R35/00 ,  Y02T10/7005

    摘要： A control apparatus for an electric vehicle has an inverter for feeding currents to a three-phase AC motor corresponding to applied PWM signals, three current sensors, each of the sensors detecting a current of a respective phase in the three-phase AC motor, a revolution speed detector for detecting the speed of the three-phase AC motor, a motor control unit for controlling the three-phase AC motor which includes a current demand generating unit, a current control unit for performing feedback control based on the current demands and currents detected by the current sensors, and a PWM signal generating unit. To detect anomalies in the current sensors or the motor control circuit, there is also provided an anomaly detection unit for detecting an anomaly in the detected currents by checking whether monitoring index obtained by processing three values of the detected currents exceeds a preset threshold level and for outputting a current anomaly indicating signal, and an anomaly specifying unit for inputting diagnostic currents to the three-phase AC motor by judging the current anomaly indicating signal and identifying an anomalous current sensor among the three current sensors based on detection results of the diagnostic currents detected by the three current sensors. The control apparatus executes a motor control corresponding to one of a presence and a non-presence of an anomaly in the three current sensors.

    摘要翻译： 一种用于电动车辆的控制装置具有一个逆变器，用于将电流馈送到与所施加的PWM信号相对应的三相AC电动机，三个电流传感器，每个传感器检测三相交流电动机中各相的电流， 用于检测三相交流电动机的速度的转速检测器，用于控制包括电流需求生成单元的三相交流电动机的电动机控制单元，用于基于当前需求和电流进行反馈控制的电流控制单元 由电流传感器检测，以及PWM信号生成单元。 为了检测电流传感器或电动机控制电路中的异常，还提供了一种异常检测单元，用于通过检查通过处理检测到的电流的三个值获得的监视指数是否超过预设阈值水平来检测检测到的电流的异常，并且 输出电流异常指示信号;以及异常指定单元，其基于检测到的诊断电流的检测结果，通过判断当前异常指示信号并识别三个电流传感器中的异常电流传感器，向三相交流电动机输入诊断电流 由三个电流传感器。 控制装置执行对应于三个电流传感器中的异常的存在和不存在之一的电动机控制。

    Electric vehicle control system
    26.
    发明授权
    Electric vehicle control system 失效
    电动车控制系统

    公开(公告)号：US5631796A

    公开(公告)日：1997-05-20

    申请号：US552438

    申请日：1995-11-03

    申请人： Shigeyuki Yoshihara ,  Sanshiro Obara ,  Nobunori Matsudaira ,  Shotaro Naito

    发明人： Shigeyuki Yoshihara ,  Sanshiro Obara ,  Nobunori Matsudaira ,  Shotaro Naito

    IPC分类号： B60L3/00 ,  B60L3/04 ,  B60L9/18 ,  B60L15/20 ,  H02H3/18

    CPC分类号： B60L3/0084 ,  B60L11/1803 ,  B60L11/1868 ,  B60L3/0092 ,  B60L3/04 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2240/549 ,  B60L2250/10 ,  B60L2250/16 ,  B60L2250/26 ,  Y02T10/642 ,  Y02T10/7005 ,  Y02T10/7066 ,  Y02T10/7258

    摘要： An electric vehicle control system which maintains good driving performance under normal conditions, and can cut off driving current upon malfunction of a microcomputer before restarting. A setting circuit of a comparing and operating circuit has a set signal fixed to V2 if an accelerator pedal is released. If a microcomputer malfunctions to drive an inverter absent a depression of the accelerator pedal, a current flows from a battery and a battery current sensor generates an output signal n. If this value exceeds V2, a comparator is turned on, which also turns on a transistor to energize a relay and disconnects an inverter drive signal s to break the power supply from an inverter to the ac motor. Upon disconnection, an alarm lamp is lit to issue an alarm to the driver. The disconnection is held by a delay circuit until the power is reset.

    摘要翻译： 一种在正常条件下保持良好驾驶性能的电动车辆控制系统，并且可以在重新启动之前切断微型计算机故障时的驱动电流。 如果加速踏板被释放，则比较和操作电路的设置电路具有固定到V2的设定信号。 如果在没有加速踏板的按下的情况下微计算机发生故障来驱动变频器，则电流从电池流出，并且电池电流传感器产生输出信号n。 如果该值超过V2，则比较器导通，同时接通晶体管以使继电器通电，并断开变频器驱动信号s，以断开逆变器到交流电机的电源。 断开连接时，报警灯亮起，向司机发出警报。 断路由延迟电路保持，直至电源复位为止。