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公开(公告)号：US5086859A
公开(公告)日：1992-02-11
申请号：US555818
申请日：1990-07-20
IPC分类号： B62D5/04
CPC分类号： B62D5/0469
摘要： An electric power steering device in which current supplied to an electric motor is controlled in dependence on the torsional torque transmitted through the steering wheel shaft. And power steering is assisted by the rotation of the motor. The method comprises the steps of presetting a steering angle which is in the vicinity of the maximum steering angle and is less by a specific angle than the maximum steering angle; establishing the motor current value determined in dependence on the torsional torque at the time when the actual steering angle reaches the steering angle which is preset as the motor current limiting value at that time; and controlling the power steering device to assist steering by the motor current limiting value even though the torsional torque increases.
摘要翻译： 一种电动助力转向装置，其中根据通过方向盘轴传递的扭转扭矩控制提供给电动机的电流。 动力转向辅助马达旋转。 该方法包括以下步骤：将处于最大转向角附近的转向角预设为比最大转向角更小的特定角度; 建立根据当前实际转向角达到预定为当时的电动机电流限制值的转向角时的扭矩确定的电动机电流值; 并且即使扭转扭矩增加，也可以通过马达电流限制值来控制动力转向装置来辅助转向。
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公开(公告)号：US5021721A
公开(公告)日：1991-06-04
申请号：US441261
申请日：1989-11-27
CPC分类号： B62D5/0406
摘要： An electric power steering system for an automobile which includes a steering shaft having a steering torque transmitting shaft. The electric power steering system includes a housing mounted on the steering torque transmitting shaft, a torsion torque sensor, in the housing, for detecting a torsion torque in the steering shaft during a steering operation to generate a torsion torque signal representing the detected torsion torque, and a controlling unit for providing a drive signal, in response to the torsion torque signal, to control an electric motor, mounted to the housing and operatively connected to the steering torque transmitting shaft, for reducing a steering effort. The controlling unit is integrally mounted to the housing.
摘要翻译： 一种用于汽车的电动助力转向系统，其包括具有转向扭矩传递轴的转向轴。 电动助力转向系统包括安装在转向扭矩传递轴上的壳体，壳体中的扭矩传感器，用于在转向操作期间检测转向轴中的扭矩，以产生表示检测到的扭矩的扭转扭矩信号， 以及控制单元，用于响应于扭转扭矩信号提供驱动信号，以控制安装到壳体并可操作地连接到转向扭矩传递轴的电动机，以减少转向力。 控制单元一体地安装到壳体。
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3.发明授权Method of detecting absolute steering angle of steering angle sensor for vehicle 失效检测车辆转向角传感器绝对转向角的方法
公开(公告)号：US5065324A
公开(公告)日：1991-11-12
申请号：US494541
申请日：1990-03-16
摘要： A method for detecting an absolute steering angle of a steering angle sensor such as encoder for a vehicle wherein the steering angle sensor generates an output signal indicating a relative rotation angle of a steering shaft of the vehicle and at least one reference signal representing a reference position for every one rotation of the steering shaft. The method comprises the steps of setting a deviation .DELTA..theta. between the reference position and an actual straight-ahead driving state position responsive to the output signal and the reference signal, storing the deviation .DELTA..theta. in a memory of a computer which holds the deviation .DELTA..theta. while the computer is disconnected from a battery, determining a steering angle with the reference position responsive to the output signal and the reference signal, and correcting by the deviation .DELTA..theta. the steering angle to obtain the absolute steering angle.
摘要翻译： 一种用于检测诸如车辆编码器的转向角传感器的绝对转向角的方法，其中转向角传感器产生指示车辆的转向轴的相对旋转角度的输出信号和表示参考位置的至少一个参考信号 对于转向轴的每一个旋转。 该方法包括以下步骤：响应于输出信号和参考信号，将基准位置和实际直行驱动状态位置之间的偏差DELTAθ设置在存储偏差DELTAθ的计算机的存储器中 θ，同时计算机与电池断开，响应于输出信号和参考信号确定与参考位置的转向角，并且通过偏差DELTAθ校正转向角以获得绝对转向角。
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4.发明授权Method and apparatus for checking torque sensor in electric power steering system for vehicle 失效车辆电动助力转向系统中扭矩传感器检测方法及装置
公开(公告)号：US5020617A
公开(公告)日：1991-06-04
申请号：US324672
申请日：1989-03-17
IPC分类号： B62D5/04 , B62D6/00 , B62D119/00
CPC分类号： B62D5/049
摘要： A method for detecting abnormal condition of a torque sensor in an electric power steering system in which a power of an electric motor assisting steering operation of a vehicle is supplied in response to a torque signal generated from the torque sensor, the method comprising the steps of detecting a condition where the torque signal generated from the torque sensor is substantially equal to zero, detecting another condition wherein the rate of changing steering angle is larger than a predetermined value, while the steering angle is held in an increasing state, and further detecting that the above detected conditions last more than a predetermined period.
摘要翻译： 一种用于检测电动助力转向系统中的扭矩传感器的异常状态的方法，所述电动助力转向系统响应于从转矩传感器产生的转矩信号而提供辅助车辆转向操作的电动机的动力，所述方法包括以下步骤： 检测从转矩传感器产生的转矩信号基本上等于零的状况，检测转向角度变得比预定值大的另一条件，同时转向角保持在增加状态，并进一步检测到 上述检测条件持续超过预定期间。
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5.发明授权Device and method for decreasing power consumption of a steering angle detecting system for vehicle 失效用于降低车辆转向角检测系统的功耗的装置和方法
公开(公告)号：US5019981A
公开(公告)日：1991-05-28
申请号：US487300
申请日：1990-03-02
IPC分类号： B62D15/02
CPC分类号： B62D15/02
摘要： There are disclosed a device and method for saving power supply of a steering sensor for a vehicle having a conventional circuit for detecting a steering angle and a supplementary circuit for detecting an amount of steering angle change when an ignition switch is turned off. The conventional circuit comprises a rotary encoder for generating two signals of sine waveform-like having a phase discrepancy of 90 degrees responsive to a rotation of a steering shaft, and a microcomputer for calculating an absolute angle from the sine waveform-like signals. The supplementary circuit comprises a waveform shaping circuit for converting the sine signals into two rectangular wave pulse signals. While the switch is turned on, the circuit continues to detect the absolute angle based on the sine waves. When the switch is turned off, the supplementary circuit counts and hold the change amount of the angle as the pulse signals while the circuit maintains the storage of the last absolute angle. The microcomputer reads numbers of the pulse signals to set the initial absolute angle and to start operation for detecting the absolute angle.
摘要翻译： 公开了一种用于节省用于具有用于检测转向角的常规电路的车辆的转向传感器的电源的装置和方法，以及用于在点火开关关闭时检测转向角变化量的辅助电路。 常规电路包括旋转编码器，用于响应于转向轴的旋转而产生具有90度相位差的正弦波形的两个信号，以及用于从正弦波形状信号计算绝对角度的微计算机。 补充电路包括用于将正弦信号转换成两个矩形波脉冲信号的波形整形电路。 当开关打开时，电路基于正弦波继续检测绝对角度。 当开关关闭时，补充电路计数并保持角度的变化量作为脉冲信号，同时电路保持最后一个绝对角度的存储。 微型计算机读取脉冲信号的数量以设置初始绝对角度并开始用于检测绝对角度的操作。
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公开(公告)号：US4989682A
公开(公告)日：1991-02-05
申请号：US331812
申请日：1989-03-31
IPC分类号： B62D5/04
CPC分类号： B62D5/0463
摘要： Power assist of steering wheel by an electric motor is carried out by the sum of an assist motor current generated based on the output of a torsion torque sensor and a compensating current generated in dependency on the variation rate of the output of the torsion torque sensor. An assist torque current correction circuit controls the compensating current such that the amount of the compensating current is reduced in accordance with an increase in steering angle of the steering system.
摘要翻译： 通过基于扭力传感器的输出产生的辅助电动机电流与根据扭矩传感器的输出的变化率而产生的补偿电流之和来执行电动机的方向盘的动力辅助。 辅助转矩电流校正电路控制补偿电流，使得补偿电流的量根据转向系统的转向角的增加而减小。
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公开(公告)号：US4842088A
公开(公告)日：1989-06-27
申请号：US198396
申请日：1988-05-24
IPC分类号： B62D5/04
CPC分类号： B62D5/0466
摘要： A system having a motor operatively connected to a steering system for reducing the steering effort. The system is provided with a torsion torque sensor provided for detecting torsion torque generating in the steering system in steering operation. In response to the output signal of the torsion torque sensor, an assist signal and an auxiliary assist signal are produced. A detector is provided for detecting whether a variation value of the torsion torque is in an increasing direction or in a decreasing direction and for producing a direction signal dependent on the detected direction. When a direction signal representing the variation value of the torsion torque in the decreasing direction is generated, the auxiliary assist signal is reduced in value, thereby reducing a total assist signal of the assist signal and the auxiliary assist signal.
摘要翻译： 一种具有可操作地连接到转向系统以减少转向力的马达的系统。 该系统设置有用于在转向操作中检测转向系统中的扭转扭矩产生的扭矩传感器。 响应于扭矩传感器的输出信号，产生辅助信号和辅助辅助信号。 提供检测器，用于检测扭转扭矩的变化值是否在增加的方向上或在减小的方向上，并且用于产生取决于检测到的方向的方向信号。 当产生表示扭转扭矩在减小方向上的变化值的方向信号时，辅助辅助信号的值减小，从而减少辅助信号和辅助辅助信号的总辅助信号。
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8.发明授权
公开(公告)号：US5053966A
公开(公告)日：1991-10-01
申请号：US649146
申请日：1991-02-01
IPC分类号： B62D5/04
CPC分类号： B62D5/0466 , B62D5/0463
摘要： A motor control apparatus for an electric power steering system having a torsion torque sensor for detecting a torsion torque of the steering system of a vehicle, a command signal generating unit for generating a command signal in accordance with the torsion torque detected by the torque sensor, and a motor control unit for driving and controlling a motor of the electric power steering system in accordance with the command signal. The improvement of this invention is to assist steering force within the steering wheel correcting range. A steering speed detecting unit is provided for detecting the steering speed. The output signal from the steering speed range detecting unit is supplied to the steering wheel correction command unit which generates an assist correction signal. The assist correction signal has a characteristic that the absolute value thereof takes a predetermined value when a small steering angle range is detected. The output from the steering wheel correction command unit is supplied to the motor control unit to regulate the command signal. Such regulation may be effected so as to decrease the command signal as the vehicle speed increases. Alternatively, the command signal may be regulated in accordance with the correction factor signal.
摘要翻译： 一种用于电动助力转向系统的电动机控制装置，具有用于检测车辆的转向系统的扭矩的扭矩传感器，用于根据由转矩传感器检测出的扭矩产生指令信号的指令信号生成部， 以及用于根据命令信号驱动和控制电动转向系统的电动机的电动机控制单元。 本发明的改进在于辅助方向盘校正范围内的转向力。 提供用于检测转向速度的转向速度检测单元。 来自转向速度范围检测单元的输出信号被提供给产生辅助校正信号的方向盘校正命令单元。 当检测到小的转向角范围时，辅助校正信号具有其绝对值取预定值的特性。 来自方向盘校正命令单元的输出被提供给马达控制单元以调节命令信号。 可以进行这种调节，以便随着车速的增加而减小指令信号。 或者，可以根据校正因子信号来调节命令信号。
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公开(公告)号：US4979114A
公开(公告)日：1990-12-18
申请号：US341043
申请日：1989-04-20
IPC分类号： B62D5/04
CPC分类号： B62D5/0466
摘要： A motor control apparatus for an electric power steering system of a vehicle is provided. The apparatus includes a torsion torque sensor for detecting a torsion torque of the steering system, a vehicle speed sensor, a steering angle sensor, a control unit for controlling the rotational direction and torque of an electric motor in accordance with a command signal derived from the outputs from the torque sensor, vehicle speed sensor and steering angle sensor, and a neutral position recovery command unit for generating a recovery signal in response to which the steering system is returned to a neutral position, in accordance with an output signal from the steering angle sensor and when the absolute values of the output signals from the torsion torque sensor and vehicle speed sensor becomes smaller than or equal to predetermined values. The neutral position recovery command unit operates such that the recovery signal functions to make a recovery steering angle speed gradually decreases toward 0 as the steering system is returned to the neutral position while following a predetermined target steering speed. The neutral position recovery command unit also operates such that the recovery signal functions to gradually move the recovery target value toward 0.
摘要翻译： 提供一种用于车辆的电动助力转向系统的电动机控制装置。 该装置包括用于检测转向系统的扭转扭矩的扭矩传感器，车速传感器，转向角传感器，用于根据来自所述转向系统的指令信号来控制电动机的旋转方向和转矩的控制单元 来自扭矩传感器，车速传感器和转向角传感器的输出以及中立位置恢复指令单元，用于根据来自转向角的输出信号产生响应于该转向系统返回到中立位置的恢复信号 并且当来自扭矩传感器和车速传感器的输出信号的绝对值变得小于或等于预定值时。 中立位置恢复指令单元进行操作，使得恢复信号起作用以使得恢复转向角速度随着转向系统返回到中立位置而按照预定的目标转向速度朝着0逐渐减小。 中立位置恢复命令单元也操作使得恢复信号用于逐渐将恢复目标值向0移动。
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公开(公告)号：US4875541A
公开(公告)日：1989-10-24
申请号：US203286
申请日：1988-06-06
CPC分类号： B62D5/0463
摘要： A system having a motor operatively connected to a steering system for reducing the steering effort. The system is provided with a torsion torque sensor provided for detecting torsion torque generating in the steering system in steering operation. In response to the output signal of the torsion torque sensor, an assist signal is produced. The system has a dead zone for the output signal of the torsion torque sensor. Only when the output signal exceeds the dead zone, the assist signal is produced to operate the motor.
摘要翻译： 一种具有可操作地连接到转向系统以减少转向力的马达的系统。 该系统设置有用于在转向操作中检测转向系统中的扭转扭矩产生的扭矩传感器。 响应于扭矩传感器的输出信号，产生辅助信号。 该系统具有用于扭力传感器的输出信号的死区。 只有当输出信号超过死区时，才产生辅助信号来操作电机。
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