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31. 发明授权

US6041884A Electric power steering apparatus 有权
标题翻译：电动助力转向装置
公开(公告)号：US6041884A
公开(公告)日：2000-03-28
申请号：US152228
申请日：1998-09-11
申请人： Yasuo Shimizu , Akio Kobayashi , Osamu Tsurumiya , Takao Kurosawa , Nobuo Sugitani , Yoshinobu Mukai , Yoshiki Noro
发明人： Yasuo Shimizu , Akio Kobayashi , Osamu Tsurumiya , Takao Kurosawa , Nobuo Sugitani , Yoshinobu Mukai , Yoshiki Noro
IPC分类号： B62D6/00 , B62D1/16 , B62D5/04 , B62D101/00 , B62D113/00 , B62D119/00 , B62D137/00
CPC分类号： B62D1/166 , B62D5/0481 , B62D5/0484 , B62D6/008
摘要： An electric power steering apparatus comprises a motor for applying an auxiliary torque to a steering system, a steering torque sensor for detecting a steering torque in the steering system and a control unit for drive-controlling the motor based on at least a steering torque signal from the steering torque sensor. The control unit includes a motor control unit and a failure detecting unit for detecting a failure of the control unit. Based on a failure detection signal from the failure detecting unit, the motor drive control unit switches over from a normal mode in which no failure exists in the apparatus to a first failure mode in which a certain failure exists in the apparatus and an assist ratio is changed to about half of that of the normal mode.
摘要翻译：一种电动助力转向装置，包括用于向转向系统施加辅助转矩的电动机，用于检测转向系统中的转向转矩的转向转矩传感器以及至少基于转向转矩信号的转向转矩信号来控制电动机的控制单元转向扭矩传感器。控制单元包括电机控制单元和故障检测单元，用于检测控制单元的故障。根据来自故障检测单元的故障检测信号，马达驱动控制单元从设备中不存在故障的正常模式切换到设备中存在某种故障的第一故障模式，辅助比为改为正常模式的一半左右。

32. 发明授权

US6032091A Electric power steering apparatus 失效
标题翻译：电动助力转向装置
公开(公告)号：US6032091A
公开(公告)日：2000-02-29
申请号：US107102
申请日：1998-06-30
申请人： Yoshiki Noro , Yoshinobu Mukai
发明人： Yoshiki Noro , Yoshinobu Mukai
IPC分类号： B62D6/00 , B62D5/04 , B62D119/00 , B62D137/00 , B26D5/04
CPC分类号： B62D5/0457 , B62D5/0463
摘要： An electric power steering apparatus having a control unit for controlling a motor for applying an assist torque to a steering system on the basis of a steering torque of the steering system. The control unit has a drive signal fading part for generating a drive current signal on the basis of a deviation signal expressing the deviation between a target current set in correspondence with a steering torque and a detected motor current detected by a motor current detector and gradually decreasing a drive current value with time to zero when a fadeout request signal is supplied to it. Thus in an electric power steering apparatus constructed to gradually decrease a steering assist force being supplied from a motor when an ignition switch is turned off, even if an error arises in a detected motor current value as a result of a fall in the voltage of a battery power supply, the steering assist force can be decreased correctly.
摘要翻译：一种电动助力转向装置，具有控制单元，该控制单元用于根据转向系统的转向转矩来控制向转向系统施加辅助转矩的电动机。控制单元具有驱动信号衰减部，用于根据表示与转向转矩对应设定的目标电流与由电动机电流检测器检测到的检测到的电动机电流之间的偏差的偏差信号产生驱动电流信号，并逐渐减小当向其提供淡变请求信号时，具有时间到零的驱动电流值。因此，在电动助力转向装置中，即使在点火开关关闭时逐渐降低从电动机供给的转向辅助力的电动助力转向装置，即使由于电动机的电压下降而检测到的电动机电流值出现误差电池电源，可以正确降低转向辅助力。

33. 发明授权

US06026926A Electric power steering apparatus 失效
标题翻译：电动助力转向装置
公开(公告)号：US06026926A
公开(公告)日：2000-02-22
申请号：US115586
申请日：1998-07-14
申请人： Yoshiki Noro , Yoshinobu Mukai
发明人： Yoshiki Noro , Yoshinobu Mukai
IPC分类号： B62D5/04
CPC分类号： B62D5/0463 , B62D5/0469
摘要： A control unit of an electric power steering apparatus has an overload preventing part having the function of decreasing the current supplied to a motor of the electric power steering apparatus when a state such that a steering torque acting on the steering system is above a predetermined value and the steering speed of the steering system is below a predetermined value has continued for a predetermined time or having the function of immediately decreasing the current supplied to the motor when the steering speed of the steering system is below a predetermined value and the steering torque acting on the steering system is above a first predetermined value and decreasing the current supplied to the motor when a state such that the steering speed is below a predetermined value and the steering torque is above a second predetermined value smaller than the first predetermined value has continued for a predetermined time. As a result, a stable steering assist torque can be supplied from the motor even when a steering operation is carried out slowly and an excessive current is not continuously supplied to the motor when the steering system has reached a maximum steering angle position.
摘要翻译：电动助力转向装置的控制单元具有过载防止部，该过载防止部具有在作用于转向系统的转向转矩高于预定值的状态下具有减小供给到电动助力转向装置的电动机的电流的功能，转向系统的转向速度低于预定值已经持续了预定时间，或者具有在转向系统的转向速度低于预定值时立即减小提供给电动机的电流的功能，并且转向转矩作用在转向系统超过第一预定值并且当转向速度低于预定值并且转向转矩高于小于第一预定值的第二预定值的状态时，减小提供给电动机的电流，继续进行预定时间结果，即使当转向系统达到最大转向角位置时，即使缓慢地进行转向操作，并且不向电动机持续供给过大的电流，也能够从电动机供给稳定的转向辅助转矩。

34. 发明授权

US6015023A Electric power steering apparatus 失效
标题翻译：电动助力转向装置
公开(公告)号：US6015023A
公开(公告)日：2000-01-18
申请号：US74832
申请日：1998-05-08
申请人： Yoshinobu Mukai , Yoshiki Noro
发明人： Yoshinobu Mukai , Yoshiki Noro
IPC分类号： B62D6/00 , B62D5/04 , B62D101/00 , B62D119/00
CPC分类号： B62D5/0463 , B62D6/007
摘要： An electric power steering apparatus includes a control unit for controlling a steering assist from an electric motor in accordance with steering torque detected by a torque detector. The control unit includes a plurality of assist mode generators to which are allocated different characteristics of target current to provide different steering characteristics, and any one of the assist mode generators can be switchably selected depending on a predetermined condition. All of the assist mode generators are set in such a manner that the respective allocated characteristics of target current become substantially uniform in a high-velocity driving condition. Thus, the steering characteristics are kept constant even when an assist mode change is effected during high-velocity running of the automotive vehicle, so that it is possible to effectively avoid a decline in the driver's steering feeling and adverse effects on the behavior of the automotive vehicle that would be caused by the assist mode change during the high-velocity running.
摘要翻译：电动助力转向装置包括控制单元，用于根据由转矩检测器检测到的转向转矩来控制来自电动机的转向辅助。控制单元包括多个辅助模式发生器，其被分配有不同的目标电流特性以提供不同的转向特性，并且根据预定条件可以切换地选择任一个辅助模式发生器。所有的辅助模式发生器被设置成使得各个分配的目标电流的特性在高速驱动条件下变得基本均匀。因此，即使在机动车辆的高速行驶期间进行辅助模式改变时，转向特性也保持恒定，从而可以有效地避免驾驶员的转向感觉的下降和对汽车的行为的不利影响将在高速运行期间由辅助模式改变引起的车辆。

35. 发明授权

US5992558A Electric power steering apparatus 失效
标题翻译：电动助力转向装置
公开(公告)号：US5992558A
公开(公告)日：1999-11-30
申请号：US98186
申请日：1998-06-16
申请人： Yoshiki Noro , Yoshinobu Mukai
发明人： Yoshiki Noro , Yoshinobu Mukai
IPC分类号： B62D6/00 , B62D5/04 , B62D101/00 , B62D119/00 , B62D127/00
CPC分类号： B62D6/007
摘要： Control unit has a plurality of steering assist modes to which are allocated different characteristics of a target motor current for an assisting motor. Engine rotation sensor detects a current number of rotations of a vehicle engine. Mode switching unit effects a change between the steering assist modes only when the detected vehicle velocity is below a predetermined reference velocity representative of a substantially stationary condition of the vehicle and simultaneously the detected number of rotations of the engine is below a predetermined value. Thus, a change in steering characteristic is permitted only when the engine rotation sensor indicates that the vehicle is in the substantially stationary condition. This way, even with a malfunctioning velocity sensor, it is always possible to avoid an unwanted deterioration in driver's steering feel that would be caused by the steering characteristic change.
摘要翻译：控制单元具有多个转向辅助模式，为辅助电动机分配了目标电动机电流的不同特性。发动机旋转传感器检测车辆发动机的当前转数。只有当检测到的车辆速度低于表示车辆的基本静止状态的预定基准速度时，模式切换单元仅在转向辅助模式之间产生变化，同时检测到的发动机转数低于预定值。因此，仅当发动机旋转传感器指示车辆处于基本静止状态时才允许转向特性的改变。这样，即使使用故障的速度传感器，总是可以避免驾驶员的转向感觉由于转向特性变化而引起的不期望的恶化。

36. 发明授权

US5894206A Electric power steering apparatus 失效
标题翻译：电动助力转向装置
公开(公告)号：US5894206A
公开(公告)日：1999-04-13
申请号：US46068
申请日：1998-03-23
申请人： Yoshiki Noro , Yoshinobu Mukai
发明人： Yoshiki Noro , Yoshinobu Mukai
IPC分类号： B62D6/00 , B62D5/04 , B62D119/00 , B62D137/00
CPC分类号： B62D5/0463 , Y10S388/93
摘要： An electric power steering apparatus includes a control unit for controlling a motor drive circuit which drives an electric motor on the basis of a steering torque signal supplied from a steering torque sensor. The control unit includes a center value compensating circuit for compensating for the offset of a center value of the steering torque sensor, and a direction inhibiting circuit for inhibiting supply of a motor control signal to the motor drive circuit on the basis of the steering torque signal. The direction inhibiting circuit has a reference value changing section for changing operation reference values in left and right directions of the steering torque in response to the offset of the center value. The reference value changing section generates left and right operation reference values corresponding to a center value signal supplied from the center value compensating circuit.
摘要翻译：电动助力转向装置包括控制单元，用于基于从转向转矩传感器提供的转向转矩信号来控制驱动电动机的电动机驱动电路。控制单元包括：中心值补偿电路，用于补偿转向转矩传感器的中心值的偏移;以及方向禁止电路，用于根据转向转矩信号禁止向电动机驱动电路供给电动机控制信号。方向抑制电路具有基准值变更部，用于根据中心值的偏移来改变转向转矩的左右方向的运转基准值。参考值改变部分产生与从中心值补偿电路提供的中心值信号相对应的左和右操作参考值。

37. 发明授权

US5844387A Electric power steering device 失效
标题翻译：电动助力转向装置
公开(公告)号：US5844387A
公开(公告)日：1998-12-01
申请号：US588352
申请日：1996-01-18
申请人： Yoshinobu Mukai , Yoshiki Noro , Shinzi Hironaka
发明人： Yoshinobu Mukai , Yoshiki Noro , Shinzi Hironaka
IPC分类号： B62D6/00 , B62D5/04 , H02P7/00
CPC分类号： B62D5/0463 , B62D5/046 , H02P7/04
摘要： An electric power steering device for directly applying the power of an electric motor as an auxiliary steering power to a steering system to lower a steering force required of the driver, wherein a current detecting element in a motor current detecting unit is connected in series with the motor, and a drive control unit is operable to always drive, by a PWM signal, that side of switching elements of a bridge circuit to which the motor is connected. With this construction, a high-frequency pulse noise generated upon the PWM driving of the the switching element is absorbed by an inductance in the motor and hence a high-frequency pulse noise detected by the current detecting element can be controlled at an extremely small level. Thus, the electric power steering device can prevent generation of abnormal noises from the motor and oscillation or hunting of the steering system and provide stable steering characteristics.
摘要翻译：一种电动助力转向装置，用于将电动机的动力作为辅助转向动力直接施加到转向系统以降低驾驶员所需的转向力，其中电动机电流检测单元中的电流检测元件与电动机，并且驱动控制单元可操作地始终通过PWM信号来驱动与电动机连接的桥式电路的开关元件的那一侧。利用这种结构，在开关元件的PWM驱动时产生的高频脉冲噪声被马达中的电感吸收，因此可以将由电流检测元件检测的高频脉冲噪声控制在极小的水平。因此，电动助力转向装置能够防止来自电动机的异常噪声的产生和转向系统的振荡或振动，并提供稳定的转向特性。

38. 发明授权

US5809438A Electric power steering apparatus 失效
标题翻译：电动助力转向装置
公开(公告)号：US5809438A
公开(公告)日：1998-09-15
申请号：US672122
申请日：1996-06-27
申请人： Yoshiki Noro , Shinzi Hironaka , Yoshinobu Mukai , Nobuo Sugitani , Takao Kurosawa
发明人： Yoshiki Noro , Shinzi Hironaka , Yoshinobu Mukai , Nobuo Sugitani , Takao Kurosawa
IPC分类号： B62D5/04 , B62D6/00 , G06G7/70
CPC分类号： B62D5/046
摘要： In a controller of an electric power steering apparatus for use with an automotive vehicle, a regenerating condition determining section determines whether or not a motor of the vehicle is in a regenerating condition, and a regeneration control signal generating section generates a regeneration control signal to control the regenerating condition of the motor. A switching section selects between the motor control signal and the regeneration control signal in accordance with a result of determination by the regenerating condition determining section. With this arrangement, a motor current including a regenerative current that is caused to flow in the motor in response to a vehicle driver effecting during-stoppage steering maneuvering and then releasing a steering wheel can be controlled independently of a feedback loop of the controller. The regeneration control signal generating section generates a pulse-width-modulated signal of duty cycle corresponding to the offset between a target current and a motor current flowing in the motor. The regenerating condition determining section determines that the motor is in the regenerating condition if the signs of the target current and motor current control signals do not comport with each other and the direction of the steering torque signal and the rotational direction of the motor are opposite to each other.
摘要翻译：在与机动车辆一起使用的电动助力转向装置的控制器中，再生条件决定部判定车辆的电动机是否处于再生状态，再生控制信号生成部生成再生控制信号，以进行控制电机的再生条件。开关部根据再生条件判定部的判断结果，在电动机控制信号与再生控制信号之间进行选择。通过这种布置，可以独立于控制器的反馈回路来控制包括响应于车辆驾驶员在停机中转向操纵并随后释放方向盘而在电动机中流动的再生电流的电动机电流。再生控制信号生成部生成与目标电流和在电动机中流动的电动机电流之间的偏移对应的占空比的脉冲宽度调制信号。如果目标电流和电动机电流控制信号的符号彼此不匹配，并且转向转矩信号的方向和电动机的旋转方向相反，则再生条件确定部分确定电动机处于再生状态彼此。

39. 发明授权

US6131693A Electric power steering apparatus 有权
标题翻译：电动助力转向装置
公开(公告)号：US6131693A
公开(公告)日：2000-10-17
申请号：US139988
申请日：1998-08-26
申请人： Yoshinobu Mukai , Yoshiki Noro
发明人： Yoshinobu Mukai , Yoshiki Noro
IPC分类号： B62D6/00 , B62D5/04 , B62D6/02 , B62D101/00 , B62D103/00 , B62D117/00 , B62D119/00
CPC分类号： B62D5/0463 , B62D6/02
摘要： An electric power steering apparatus includes a control unit designed to be responsive to acceleration and deceleration of the vehicle and forward and revere movements of the vehicle for correcting a steering assist torque to be supplied from an electric motor to the steering system of a vehicle. The control unit includes an acceleration and deceleration calculating section, a front wheel load calculating section, a phase compensating section, a main control amount setting section and a damping correction value setting section. The acceleration and deceleration calculating section determines acceleration and deceleration on the basis of the direction and magnitude of a vehicle velocity detected by a vehicle velocity sensor. The front wheel load calculating section determines a front wheel load variation on the basis of the acceleration and deceleration. The phase compensating section perform phase compensation of a steering torque on the basis of the front wheel load variation. The main control amount setting section sets a main control amount on the basis of the phase-compensated torque and the vehicle velocity. The damping correction value setting section sets a damping correction value on the basis of the front wheel load variation. The main control amount and the damping correction value are used to determined a correction control amount which is used for controlling a current to be supplied to the electric motor.
摘要翻译：电动助力转向装置包括控制单元，该控制单元被设计为响应于车辆的加速和减速，并且向前并且重新确定用于校正从电动机提供到车辆的转向系统的转向辅助转矩的车辆的运动。控制单元包括加速和减速计算部分，前轮负载计算部分，相位补偿部分，主控制量设定部分和阻尼校正值设定部分。加速和减速计算部分基于由车速传感器检测的车速的方向和大小来确定加速和减速。前轮负载计算部根据加速和减速来确定前轮负载变化。相位补偿部基于前轮负载变动进行转向转矩的相位补偿。主控制量设定部根据相位补偿转矩和车速来设定主控制量。阻尼校正值设定部基于前轮负载变动来设定阻尼校正值。主控制量和阻尼校正值用于确定用于控制要提供给电动机的电流的校正控制量。

40. 发明授权

US6094021A Motor drive apparatus 失效
标题翻译：电机驱动装置
公开(公告)号：US6094021A
公开(公告)日：2000-07-25
申请号：US413066
申请日：1999-10-06
申请人： Yoshiki Noro , Yoshinobu Mukai , Shinzi Hironaka , Mitsunori Kawashima
发明人： Yoshiki Noro , Yoshinobu Mukai , Shinzi Hironaka , Mitsunori Kawashima
IPC分类号： B62D5/04 , H02H7/08 , H02M7/5387 , H02P7/00 , H02P7/29 , H02K29/00
CPC分类号： B62D5/0487 , H02P7/04 , H02H7/0838 , H02H7/0844
摘要： In a motor drive apparatus, a motor drive circuit includes an H bridge circuit composed of four field effect transistors or FETs, and resistors each having electrical resistance sufficiently higher than that of each of the FETs which would be presented when the FET has an ON-state trouble. These resistors are connected in parallel to the respective FETs. To perform a ON-state trouble detecting test on the individual FETs, an OFF signal is fed to all the FETs. If all the EFTS are free of the ON-state trouble, electric potential, representing a result of higher potential of a battery being divided by the resistors, appears at two input terminals of an electric motor connected to the motor drive circuit. If two of the FETs, having their drains connected to a higher-potential electrode of the battery, have the ON-state trouble, the higher potential of the battery appears at the two terminals of the electric motor. If the other two FETs, having their sources connected to a lower-potential or ground electrode of the battery, have the ON-state trouble, the lower or ground potential of the battery appears at the two terminals of the electric motor. These potential appearing at the motor terminals is detected via respective potential detectors.
摘要翻译：在电动机驱动装置中，电动机驱动电路包括由四个场效应晶体管或FET组成的H桥电路，以及各自具有比当FET具有导通时的FET的电压充分高的电阻的电阻，国家麻烦这些电阻器与各个FET并联连接。为了在各个FET上执行ON状态故障检测测试，向所有FET馈送OFF信号。如果所有EFTS都没有导通状态故障，则表示电池被电阻分压的电位较高的结果的电位出现在连接到电动机驱动电路的电动机的两个输入端。如果其两个FET的漏极连接到电池的高电位电极，则具有导通状态故障，电池的较高电位出现在电动机的两个端子处。如果将其源极连接到电池的低电位或接地电极的另外两个FET具有导通状态故障，则电池的较低或接地电位出现在电动机的两个端子处。通过各自的电位检测器来检测电动机端子出现的这些电位。

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