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    • 1. 发明授权
    • Controller for electric vehicle
    • 电动车控制器
    • US5600215A
    • 1997-02-04
    • US499135
    • 1995-07-07
    • Hiroyuki YamadaShotaro NaitoSanshiro Obara
    • Hiroyuki YamadaShotaro NaitoSanshiro Obara
    • G01R31/36B60L3/00B60L9/18B60L11/18B60L15/20B60L15/36H01M10/44H02P7/29
    • B60L11/1862B60L15/2045B60L15/36B60L2200/26B60L2240/423Y02T10/642Y02T10/7005Y02T10/7044Y02T10/705Y02T10/7283
    • The invention provides an electric vehicle controller in which the generated motor torque is limited when the voltage of the vehicle battery decreases during running, in order to suppress over-discharge of the battery. A high torque can be obtained for a short period, however, even in the torque limiting period, and over-discharge is prevented by stopping electric power converting means in a final stage of discharge voltage of the battery. According to the invention, during operation of the vehicle, the battery terminal voltage is monitored and compared with a first comparison value V.sub.1. If the battery voltage falls below V.sub.1, a first counter commences measurement of the time period during which this condition continues. If the time period measured by the first counter reaches a preset value t.sub.1, torque limitation is initiated. In the torque limitation state, a torque command signal, generated by the control to operate the vehicle motor, is compared with the signal generated by the vehicle accelerator, and the signal having the lower value is thereafter used to control operation of the vehicle motor. In order to provide the capability to generate higher levels of torque for brief periods during torque limitation, the torque limitation process is terminated if the accelerator pedal is released completely.
    • 本发明提供了一种电动车辆控制器,其中当车辆电池的电压在行驶期间减小时,产生的电动机转矩受到限制,以便抑制电池的过度放电。 然而,即使在转矩限制期间也能够获得高扭矩,并且通过在电池的放电电压的最后阶段停止电力转换单元来防止过放电。 根据本发明,在车辆运行期间,监视电池端子电压并与第一比较值V1进行比较。 如果电池电压低于V1,则第一个计数器开始测量该条件持续的时间段。 如果由第一计数器测量的时间段达到预设值t1,则启动转矩限制。 在转矩限制状态下,通过车辆用电动机的操作控制产生的转矩指令信号与由车辆加速器产生的信号进行比较,然后使用具有较低值的信号来控制车辆电动机的动作。 为了在扭矩限制期间提供短时间产生更高水平的扭矩的能力,如果加速踏板被完全释放,转矩限制过程终止。
    • 4. 发明授权
    • Failure detection method for electric vehicles and fail-safe control
method using this method
    • 电动车故障检测方法及故障安全控制方法
    • US5357181A
    • 1994-10-18
    • US133376
    • 1993-10-08
    • Nobuyoshi MutohRyoso MasakiTsutomu OmaeSanshiro ObaraShotaro Naito
    • Nobuyoshi MutohRyoso MasakiTsutomu OmaeSanshiro ObaraShotaro Naito
    • B60L3/00B60L3/08B60L9/18H02P27/06
    • B60L3/0038
    • An object of the present invention is to secure safe driving of electric vehicles by enabling torque control regardless of sensor disorder. In the present invention, the mode of current sensor disorder is detected by a sensor disorder detection means. If it is found as a result that only 1 out of 3 current sensors is failing, the current of the failing current sensor is estimated by 2 normal current sensors and the torque control of the motor is continued by the ordinary torque control system. If 2 or more current sensors are found to be failing, a torque control system based on an AC current reference operation means is formed to control the motor torque based on the AC current reference. If a sensor failure detection means determines that only 1 phase is failing in the speed sensor, the motor torque is controlled by using the remaining 1 phase to detect the rotating angular speed of the motor. If all speed sensors are failing but the current sensors are normal, the motor torque is controlled by estimating the motor torque from the 3 phase AC current. If both the current sensors and the speed sensors are found to be failing, the motor torque is controlled based on the estimated torque control and rotating angular speed to continue the driving that is needed to avoid dangerous situations.
    • 本发明的目的是通过实现扭矩控制来确保电动车辆的安全驾驶,而不管传感器无序。 在本发明中,由传感器无序检测装置检测电流传感器障碍的模式。 如果发现3个电流传感器中只有1个发生故障,则故障电流传感器的电流由2个正常电流传感器估计,电机的转矩控制由普通转矩控制系统继续。 如果发现2个以上的电流传感器发生故障,则形成基于交流电流基准运算装置的转矩控制系统,以基于交流电流基准来控制电动机转矩。 如果传感器故障检测装置确定速度传感器中只有1相故障,则通过使用剩余的1相来检测电动机的旋转角速度来控制电动机转矩。 如果所有速度传感器故障,但电流传感器正常,则通过从三相交流电流估计电机转矩来控制电机转矩。 如果发现电流传感器和速度传感器都有故障,则基于估计的转矩控制和旋转角速度来控制电动机转矩,以继续驾驶以避免危险情况。
    • 7. 发明授权
    • Testing device for generator output voltage regulators
    • 发电机输出电压调节器测试装置
    • US4222005A
    • 1980-09-09
    • US887366
    • 1978-03-16
    • Shotaro Naito
    • Shotaro Naito
    • G01R31/00G01R31/34G01R31/40H02J7/14H02J7/16G01R31/02
    • H02J7/166G01R31/34G01R31/40H02J7/1461
    • There is disclosed a testing device for a voltage regulator incorporated in a generator assembly for controlling the output voltage of the generator assembly to a predetermined value, the generator assembly including an AC generator having a field coil and an armature coil, and a rectifier for rectifying the output of the AC generator. The testing device comprises a DC power source, a variable voltage generator for supplying a variable voltage to the input of the voltage regulator, and a resistor connected between the DC power source and the field coil, whereby presence or absence of failures of the voltage regulator may be judged from a magnitude of the input variable voltage and a change in voltage at a junction between the field coil and the resistor, as the input voltage is gradually increased.
    • 公开了一种结合在发电机组件中的电压调节器的测试装置,用于将发电机组件的输出电压控制到预定值,发电机组件包括具有励磁线圈和电枢线圈的交流发电机,以及整流器 交流发电机的输出。 测试装置包括直流电源,用于向电压调节器的输入端提供可变电压的可变电压发生器,以及连接在直流电源和励磁线圈之间的电阻器,由此存在或不存在电压调节器的故障 可以根据输入电压的大小和励磁线圈和电阻器之间的接点处的电压变化来判断输入电压逐渐增加。
    • 9. 发明授权
    • Physical quantity sensor arrangement
    • 物理量传感器布置
    • US5544523A
    • 1996-08-13
    • US206219
    • 1994-03-07
    • Kaoru UchiyamaMitsukuni TsutsuiShotaro NaitoSeiji Suda
    • Kaoru UchiyamaMitsukuni TsutsuiShotaro NaitoSeiji Suda
    • G01F1/68G01F1/684G01F1/692G01F1/698G01F1/699G01F15/02
    • G01F1/684G01F1/6842G01F1/692G01F1/698G01F1/699
    • An air flow sensor unit for an internal combustion engine control system which detects an air flow rate and outputs an optical signal corresponding to the detected air flow rate to an external equipment including a bridge circuit including a temperature sensitive resistor which detects the air flow rate and outputs a first electrical signal indicative of a voltage amplitude corresponding to the detected air flow rate; a first converting circuit which converts the first electrical signal outputted from the bridge circuit into a second electrical signal indicative of a digital value corresponding to the voltage amplitude of the first electrical signal; a second converting circuit including a laser diode, for converting the second electrical signal outputted from the first converting circuit into the optical signal having the same digital value as that of the second electrical signal; a housing for accommodating the bridge circuit, first converting circuit and second converting circuit; and an apparatus of a lens and optical fiber cable secured integrally to the housing for transmitting the optical signal outputted from the second converting circuit to an external equipment.
    • 一种用于内燃机控制系统的气流传感器单元,其检测空气流量并将对应于检测到的空气流量的光信号输出到包括检测空气流量的包括温度敏感电阻器的桥式电路的外部设备,以及 输出表示与检测到的空气流量对应的电压幅度的第一电信号; 第一转换电路,其将从桥接电路输出的第一电信号转换成指示对应于第一电信号的电压幅度的数字值的第二电信号; 包括激光二极管的第二转换电路,用于将从第一转换电路输出的第二电信号转换成具有与第二电信号相同的数字值的光信号; 用于容纳桥接电路的壳体,第一转换电路和第二转换电路; 以及透镜和光纤电缆的装置,其一体地固定到壳体,用于将从第二转换电路输出的光信号传输到外部设备。