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公开(公告)号：US5453930A
公开(公告)日：1995-09-26
申请号：US998974
申请日：1992-12-30
CPC分类号： B60L15/2036 , B60L15/20 , Y02T10/645 , Y02T10/646 , Y02T10/648 , Y02T10/7275
摘要： A wheel motor drive system for electric automobiles comprises a car battery mounted on a vehicle body, at least two electric motors connected to vehicle wheels independently of each other, each of the motors having inherent torque characteristics with regard to a rotational speed and a maximum torque, sensors for monitoring a vehicle travelling condition, and a controller responsive to the vehicle travelling condition and the torque characteristics of the motors for controlling the motors at a low power consumption mode wherein at least one of the motors is driven within a high motor efficiency range so as to assure a long travel distance per one battery discharge.
摘要翻译： 用于电动汽车的轮电机驱动系统包括安装在车体上的汽车电池，至少两个电动机彼此独立地连接到车轮，每个电动机具有关于转速和最大转矩的固有转矩特性 ，用于监视车辆行驶状态的传感器，以及响应车辆行驶状态的控制器和用于以低功耗模式控制电动机的电动机的转矩特性的控制器，其中至少一个电动机在高电动机效率范围内被驱动 以确保每个电池放电的长行程距离。
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公开(公告)号：US5212641A
公开(公告)日：1993-05-18
申请号：US586604
申请日：1990-09-24
申请人： Toru Iwata , Takashi Imaseki , Minoru Tamura , Yuichi Fukuyama
发明人： Toru Iwata , Takashi Imaseki , Minoru Tamura , Yuichi Fukuyama
IPC分类号： B60K28/10 , B60K28/16 , B60T8/175 , B62D6/00 , B62D7/14 , B62D7/15 , B62D101/00 , B62D105/00 , B62D113/00 , B62D137/00
摘要： A rear wheel steering control system is provided. This system includes a traction control system which is responsive to generation of a difference in rotational speeds between front and rear wheels to recover traction of driven wheels and a compensating system which corrects a rear wheel steering angle, determined in a preselected relation to vehicle speed and a steered angle of the front wheels, based on the difference in rotational speeds between the front and rear wheels to provide a proper rear wheel target steering angle. The system restricts operation of the compensating system during operation of a traction control system to prevent a hunting frequency thereof from affecting the operation of the compensating system.
摘要翻译： 提供后轮转向控制系统。 该系统包括牵引控制系统，其响应于产生前轮和后轮之间的转速的差异，以恢复从动轮的牵引力;以及补偿系统，该补偿系统校正与车速预先确定的后轮转向角，以及 基于前轮和后轮之间的转速的差异，前轮的转向角度提供适当的后轮目标转向角。 系统在牵引控制系统的操作期间限制补偿系统的操作，以防止其寻呼频率影响补偿系统的运行。
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公开(公告)号：US5099940A
公开(公告)日：1992-03-31
申请号：US575011
申请日：1990-08-30
申请人： Takashi Imaseki , Minoru Tamura , Toru Iwata , Yuichi Fukuyama
发明人： Takashi Imaseki , Minoru Tamura , Toru Iwata , Yuichi Fukuyama
IPC分类号： B62D7/14 , B62D6/00 , B62D7/15 , B62D105/00
CPC分类号： B62D7/159
摘要： A system for controlling a steering angle for the rear wheels of a vehicle is provided. This system includes generally a rotational speed sensor for detecting rotational speeds of front and rear wheels to provide a difference in rotational speeds between the front and the rear wheels, an angle sensor for sensing a steered angle of a steering wheel, a steering controller for determining a rear wheel target steering angle, and an actuator for steering the rear wheels by the rear wheel target steering angle. The steering controller calculates a component of a difference in rotational speeds between the front and rear wheels caused by a difference in turning tracks therebetween and compensates for this component by the difference derived by the rotational speed sensor to provide a correction value for the rotational speeds between the front and rear wheels caused by acceleration during turning as a correction for a rear wheel steering angle. The steering controller determines the rear wheel target steering angle based on the correction.
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公开(公告)号：US5184298A
公开(公告)日：1993-02-02
申请号：US575012
申请日：1990-08-30
申请人： Takashi Imaseki , Minoru Tamura , Toru Iwata , Yuichi Fukuyama
发明人： Takashi Imaseki , Minoru Tamura , Toru Iwata , Yuichi Fukuyama
CPC分类号： B62D7/159
摘要： A system for controlling a steering angle for the rear wheels of a vehicle is provided. This system includes generally, a torque sensor for detect torque of driven wheel, an angle sensor for sensing a steered angle of front wheels, a steering controller for determining a rear wheel target steering angle, and an actuator for steering the rear wheels by the rear wheel target steering angle. The steering controller first determines a rear wheel steering angle based on the steered angle of the front wheels and then calculates a correction for the rear wheel steering angle according to variation in the torque of the driven wheels during running to determine the proper rear wheel target steering angle.
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公开(公告)号：US5103925A
公开(公告)日：1992-04-14
申请号：US574685
申请日：1990-08-30
申请人： Takashi Imaseki , Minoru Tamura , Toru Iwata , Yuichi Fukuyama
发明人： Takashi Imaseki , Minoru Tamura , Toru Iwata , Yuichi Fukuyama
IPC分类号： B62D6/00 , B60T8/1755 , B62D7/14 , B62D7/15 , B62D101/00 , B62D109/00
CPC分类号： B60T8/1755 , B62D7/159 , B60T2260/022
摘要： Steering angle for rear wheels of a vehicle is controlled by determining a rear wheel steering angle in a preselected relation to a steered angle of a steering wheel. A correction factor for the rear wheel steering angle is based on a difference in rotational speed between front and rear wheels induced during turning. The correction factor for rear wheel steering angle is maintained at the value it had prior to braking to cancel the effect of braking slips on the determination of the rear wheel steering angle to improve steering stability.
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公开(公告)号：US5602481A
公开(公告)日：1997-02-11
申请号：US401608
申请日：1995-03-09
申请人： Yuichi Fukuyama
发明人： Yuichi Fukuyama
IPC分类号： H02J7/02 , H02J7/00 , G01N27/416
CPC分类号： H02J7/0016
摘要： Disclosed is a series connection circuit for secondary batteries for preventing a reduction of energy usable as the builtup battery due to a difference of DOD of the batteries and a difference of voltage detection level of voltage detectors. The circuit includes voltage detectors for detecting the terminal voltage of the secondary batteries thereby to calculate the respective values of DOD thereof, transistors for discharging the secondary batteries independently, a charging unit to charge the secondary batteries and a controller for controlling the independent discharging operation of the transistors corresponding to the respective values of DOD. With the arrangement mentioned above, it is possible to equalize the values of DOD, whereby the reduction of usable energy caused by the increasing of difference of DOD can be prevented.
摘要翻译： 公开了一种用于防止由于电池的DOD的差异和电压检测器的电压检测水平的差异而可用作积累电池的能量的二次电池的串联连接电路。 该电路包括用于检测二次电池的端子电压的电压检测器，从而计算其DOD的相应值，独立地放电二次电池的晶体管，对二次电池充电的充电单元和用于控制二次电池的独立放电操作的控制器 晶体管对应于DOD的相应值。 通过上述结构，能够均衡DOD的值，从而可以防止由于DOD的差异的增加引起的可用能量的减少。
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公开(公告)号：US6052633A
公开(公告)日：2000-04-18
申请号：US799372
申请日：1997-02-14
申请人： Yuichi Fukuyama , Satoshi Miura
发明人： Yuichi Fukuyama , Satoshi Miura
IPC分类号： B62D6/00 , B62D5/065 , B62D5/07 , B62D101/00 , B62D113/00 , B62D137/00 , B62D5/00
CPC分类号： B62D5/065
摘要： A power steering apparatus for an electric vehicle has a steering mechanism for steering a pair of steered wheels upon receiving assist power from a steering assist-power according to a steer force required for steering the steered wheels. A fluid pressure pump driven by an electric motor supplies pressurized fluid to the steering assist-power mechanism. An electric motor controller stops the electric motor when the electric-source voltage detected by an electric source voltage detector is greater than or equal to a voltage set value and when the steer angle detected by a steer angle detector is smaller than a steer angle set value, and prohibits stopping the electric motor when the electric-source voltage is smaller than the voltage set value. Therefore, it becomes possible to ensure the steering responsiveness under an electric voltage lowered condition while avoiding the disturbance to the electric source.
摘要翻译： 用于电动车辆的动力转向装置具有转向机构，用于根据转向所需的转向力从转向辅助动力接收辅助动力来转向一对转向轮。 由电动机驱动的流体压力泵将加压流体供应到转向辅助动力机构。 当由电源电压检测器检测到的电源电压大于或等于电压设定值时，电动机控制器停止电动机，并且当由转向角检测器检测到的转向角小于转向角设定值 并且当电源电压小于电压设定值时，禁止电动机停止。 因此，能够在避免对电源的干扰的同时，保证在电压降低状态下的转向响应性。
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