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1. 发明授权

US06583594B2 Electric power steering apparatus 失效
公开(公告)号：US06583594B2
公开(公告)日：2003-06-24
申请号：US09862703
申请日：2001-05-23
申请人： Hiroshi Nishimura , Shigeki Ohtagaki
发明人： Hiroshi Nishimura , Shigeki Ohtagaki
IPC分类号： G05B500
CPC分类号： B62D5/0481 , B62D5/0493
摘要： In conventional electric power steering apparatus, a problem exists in that whether or not there is any failure in drive inhibiting means may be erroneously judged, and that it is impossible to judge whether or not a drive inhibition signal is normal. A steering torque detected by a torque sensor and a motor current outputted by motor drive means 5 using a motor drive signal formed by CPU 13 based on the steering torque are inputted to drive inhibiting means 14. The drive inhibiting means 14 outputs a drive inhibition signal and a drive inhibition switch signal based on the relation between the inputted two signals. CPU 13 detects that there is a failure in the drive inhibiting means 14 based on the outputted signals. Upon detecting a failure, a control is conducted so that the motor current is set to 0.

2. 发明授权

US06497303B1 Electric power steering system 有权
标题翻译：电动助力转向系统
公开(公告)号：US06497303B1
公开(公告)日：2002-12-24
申请号：US09688861
申请日：2000-10-17
申请人： Hiroshi Nishimura , Shigeki Ohtagaki , Kazuo Kikuta , Yuji Takatsuka
发明人： Hiroshi Nishimura , Shigeki Ohtagaki , Kazuo Kikuta , Yuji Takatsuka
IPC分类号： B62D599
CPC分类号： B62D5/0487
摘要： An electric power steering system is proposed in which it is possible to inspect function of switches connected to a motor. An electric power steering system having a CPU 2 for calculating a control amount for controlling a motor 3 corresponding to a steering torque 1 and a driving circuit 8 for driving the motor 3, comprises a first switch 12 connected in series with the motor 3, a voltage monitoring circuit 10 for monitoring motor voltage, and a drive restricting circuit 11 for restricting operation of the driving circuit 8 besides the CPU 2, and in which the CPU 2 inspects function of the first switch 12 from drive of the driving circuit 8 and results detected by the voltage monitoring circuit 10 when it is judged that the driving circuit 8 is not restricted from a situation of the steering torque 1 or the drive inhibiting circuit 11.
摘要翻译：提出了一种电动助力转向系统，其中可以检查连接到电动机的开关的功能。一种电动助力转向系统，具有CPU 2，用于计算与转向转矩1相对应的电动机3的控制量和驱动用于驱动电动机3的电路8包括与电动机3串联连接的第一开关12，用于监视电动机电压的电压监视电路10以及用于限制除CPU 2之外的驱动电路8的操作的驱动限制电路11，并且其中CPU2在驱动电路8的驱动下检查第一开关12的功能和由电压监视电路10检测到的结果，当判断为没有限制驱动电路8的转向转矩1或驱动禁止电路11。

3. 发明授权

US5913913A Control apparatus for motor-driven power steering system of motor vehicle 失效
标题翻译：机动车用电动助力转向系统的控制装置
公开(公告)号：US5913913A
公开(公告)日：1999-06-22
申请号：US757828
申请日：1996-11-27
申请人： Takahiro Okanoue , Takayuki Kifuku , Shigeki Ohtagaki , Shunichi Wada
发明人： Takahiro Okanoue , Takayuki Kifuku , Shigeki Ohtagaki , Shunichi Wada
IPC分类号： B62D6/00 , B62D5/04 , G06G7/76
CPC分类号： B62D5/0463 , B62D5/0484
摘要： A control apparatus for a motor-driven power steering system of a motor vehicle controls the steering system such that a steering torque required to be applied by a driver is prevented from increasing abruptly or steeply even when generation of an assist torque applied to the steering system for assisting the driver in steering operation is to be stopped. The control apparatus includes an operation stop decision mechanism (111, 112, OR) for deciding whether or not an operation stop command is to be issued for stopping control operation for the motor-driven power steering system, a torque detecting mechanism (16, 113) for detecting a steering torque transmitted from an input shaft (21a) to an output shaft (21c) of a steering column (21) of the motor-driven power steering system, and an assist torque control mechanism (114, 116, 117, 118, 13) for updating an assist torque applied by an electric motor (20) to the output shaft (21c) with an assist torque control quantity determined on the basis of a detected torque value outputted from the torque detection mechanism (16, 113), wherein upon issuance of the operation stop command by the operation stop decision mechanism (111, 112, OR), the assist torque control mechanism stops application of the assist torque, provided that the detected torque value is lower than a predetermined value inclusive thereof.
摘要翻译：用于机动车辆的电动机动力转向系统的控制装置控制转向系统，使得即使在施加到转向系统的辅助转矩的产生时也防止驾驶员施加的转向转矩突然或陡峭地增加用于辅助驾驶员的转向操作将被停止。控制装置包括用于判定是否要发出用于停止对电动机动力转向系统的控制操作的操作停止命令的操作停止判定机构（111,112或OR），转矩检测机构（16,113 ），用于检测从所述电动机动力转向系统的转向柱（21）的输入轴（21a）到输出轴（21c）传递的转向转矩，以及辅助转矩控制机构（114,116,117，用于根据从转矩检测机构（16,113）输出的检测转矩值确定的辅助转矩控制量，将由电动机（20）施加的辅助转矩更新到输出轴（21c）其特征在于，在由所述动作停止判定机构（111,112，或OR）发出动作停止命令的情况下，辅助转矩控制机构停止施加辅助转矩，只要所述检测转矩值低于规定值 ve。

4. 发明授权

US5375872A Suspension control device 失效
标题翻译：悬架控制装置
公开(公告)号：US5375872A
公开(公告)日：1994-12-27
申请号：US883489
申请日：1992-05-15
申请人： Shigeki Ohtagaki , Kazunori Miura
发明人： Shigeki Ohtagaki , Kazunori Miura
IPC分类号： B60G17/00 , B60G17/015 , B60G17/0165 , B60G17/018 , B60G23/00
CPC分类号： B60G17/0165 , B60G17/018 , B60G2204/81 , B60G2400/102 , B60G2500/104 , B60G2500/22 , B60G2600/18 , B60G2800/916
摘要： In a suspension control device, vertical acceleration detecting means detects an acceleration of a vehicle body in a vertical direction. A spring constant and damping force changing means for the suspensions of the vehicle body is provided. A vertical acceleration differential value measuring means measures the differential value of an output signal of the vertical acceleration detecting means which is larger than a predetermined level. A vertical acceleration period measuring means measures the magnitude and period of vibration of the output signal of the vertical acceleration detecting means. A first damping force and spring constant holding and setting means estimates a frequency of vibration of the vehicle body from the output signal of the vertical acceleration differential value measuring means, operating on the frequency thus estimated. A second damping force and spring constant holding and setting means operates on the frequency of vibration of the vehicle body which is obtained from the output signal of the vertical acceleration period measuring means. A spring constant and damping force changing control unit which, in accordance with the outputs of the first and second damping force and spring constant holding and setting means, changes the outputs of the spring constant and damping force changing means to desired levels simultaneously for the front and rear wheels, and maintains the outputs thus changed for a predetermined period of time.
摘要翻译：在悬架控制装置中，垂直加速度检测装置检测车体在垂直方向上的加速度。提供了一种用于车体的悬架的弹簧常数和阻尼力改变装置。垂直加速度差分值测量装置测量大于预定水平的垂直加速度检测装置的输出信号的差分值。垂直加速周期测量装置测量垂直加速度检测装置的输出信号的振幅和振幅周期。第一阻尼力和弹簧常数保持和设定装置根据垂直加速度差分值测量装置的输出信号来估计车身的振动频率，这样估计的频率。第二阻尼力和弹簧常数保持和设定装置根据垂直加速时段测量装置的输出信号获得的车身振动频率进行操作。弹簧常数和阻尼力变化控制单元，其根据第一和第二阻尼力和弹簧常数保持和设定装置的输出，将弹簧常数和阻尼力改变装置的输出同时改变为前端和后轮，并且保持这样改变的输出预定时间段。

5. 发明授权

US5072965A Suspension control device 失效
标题翻译：悬挂控制装置
公开(公告)号：US5072965A
公开(公告)日：1991-12-17
申请号：US530526
申请日：1990-05-30
申请人： Shunichi Wada , Shigeki Ohtagaki
发明人： Shunichi Wada , Shigeki Ohtagaki
IPC分类号： B60G17/017
CPC分类号： B60G17/017 , B60G2400/102 , B60G2400/204 , B60G2400/412 , B60G2400/60 , B60G2400/62 , B60G2400/91 , B60G2400/952 , B60G2500/102 , B60G2600/04 , B60G2600/18
摘要： A suspension control device including a control device for variably controlling a damping force of a suspension to an optimum value by determining a magnitude of acceleration is vertical opposite directions of a vehicle body which magnitude is equal to or greater than a predetermined level and measuring the accumulated duration time of a sprung resonance which is detected by a cycle of vibration of the vehicle body from a timing of the determination of the magnitude. In another aspect, the suspension control device includes a control device for outputting a command for increasing a damping force when a magnitude of acceleration in vertical opposite directions of a vehicle body is determined to be equal to or greater than a predetermined level, and measuring the number of repetitions of a sprung resonance which is detected by measuring a cycle of vibration of the vehicle body from a timing of the determination of the magnitude. The control device maintains the damping force at a high level until the vehicle is stopped and a door open condition is detected.
摘要翻译：一种悬架控制装置，包括：通过确定加速度大小将悬架的阻尼力可变地控制到最佳值的控制装置，其大小等于或大于预定水平的车体的垂直相反方向，并且测量累积的从确定大小的定时的车体的振动周期检测到的弹簧共振的持续时间。在另一方面，悬架控制装置包括控制装置，用于当确定车身的垂直相反方向的加速度的大小等于或大于预定水平时，输出用于增加阻尼力的指令，并且测量通过从确定幅度的定时测量车身的振动周期来检测的弹簧共振的重复次数。控制装置将阻尼力保持在高水平，直到车辆停止并且检测到门打开状态。

6. 发明授权

US4856815A Vehicle suspension apparatus 失效
标题翻译：车辆悬挂装置
公开(公告)号：US4856815A
公开(公告)日：1989-08-15
申请号：US255777
申请日：1988-10-11
申请人： Tadao Tanaka , Mitsuhiko Harara , Yasutaka Taniguchi , Shozo Takizawa , Minoru Tatemoto , Tetsuya Terada , Shunichi Wada , Shigeki Ohtagaki , Kouji Mitsuhata
发明人： Tadao Tanaka , Mitsuhiko Harara , Yasutaka Taniguchi , Shozo Takizawa , Minoru Tatemoto , Tetsuya Terada , Shunichi Wada , Shigeki Ohtagaki , Kouji Mitsuhata
IPC分类号： B60G17/00 , B60G17/015 , B60G17/016
CPC分类号： B60G17/016 , B60G2202/15 , B60G2202/24 , B60G2202/41 , B60G2400/10 , B60G2400/106 , B60G2400/204 , B60G2400/252 , B60G2400/34 , B60G2400/44 , B60G2400/5122 , B60G2400/821 , B60G2500/30 , B60G2600/02 , B60G2600/70 , B60G2800/012 , B60G2800/014 , B60G2800/162 , Y10S280/01
摘要： When vibrations having a period at which pitching tends to occur in a vehicle body is detected, if its amplitude falls out of the range between "H" and "L", a control unit increases the damping force of each suspension unit by using an actuator. In addition, if the amplitude falls out of the range between "HH" and "LL", the control unit supplies a predetermined amount of air to each air spring chamber in response to an upward displacement of vehicle height, and exhausts a predetermined amount of air from each air spring chamber in response to a downward displacement of vehicle height.
摘要翻译：当检测到在车体倾向发生倾斜的时段的振动时，如果其振幅落在“H”和“L”之间的范围内，则控制单元通过使用致动器来增加每个悬架单元的阻尼力。此外，如果幅度落在“HH”和“LL”之间的范围内，则控制单元响应于车辆高度的向上位移而向每个空气弹簧室提供预定量的空气，并排出预定量的响应于车辆高度的向下位移，来自每个空气弹簧室的空气。

7. 发明申请

US20050067214A1 ELECTRIC POWER STEERING CONTROL APPARATUS 有权
标题翻译：电动转向控制装置
公开(公告)号：US20050067214A1
公开(公告)日：2005-03-31
申请号：US10669654
申请日：2003-09-25
申请人： Hideyuki Tanaka , Masahiko Kurishige , Noriyuki Inoue , Kazumichi Tsutsumi , Shigeki Ohtagaki
发明人： Hideyuki Tanaka , Masahiko Kurishige , Noriyuki Inoue , Kazumichi Tsutsumi , Shigeki Ohtagaki
IPC分类号： B62D5/04 , B62D6/00
CPC分类号： B62D5/0466 , B62D5/0463 , B62D6/008
摘要： A road surface reaction torque detector has a low-pass filter element whose time constant is determined in accordance with a vehicle speed that is detected by a vehicle steed detector and a motor rotation speed that is detected by a motor rotation speed detector. A road surface reaction torque estimation value is obtained in such a manner that the road surface reaction torque detector performs low-pass filter processing on steering shaft reaction torque signal that is outputted by a steering shaft reaction torque signal outputting means. As a result, an accuracy of estimation of road surface reaction torque is improved.
摘要翻译：路面反作用转矩检测器具有低通滤波器元件，其时间常数根据车辆检测器检测到的车速和由电动机转速检测器检测的电动机转速来确定。以路面反作用转矩检测器对由转向轴反作用转矩信号输出装置输出的转向轴反作用转矩信号进行低通滤波处理的方式获得路面反作用转矩估计值。结果，提高了路面反作用转矩的估计精度。

8. 发明授权

US06711483B2 Power steering system 有权
标题翻译：动力转向系统
公开(公告)号：US06711483B2
公开(公告)日：2004-03-23
申请号：US09985922
申请日：2001-11-06
申请人： Kazushi Kimura , Kazunori Miura , Shigeki Ohtagaki
发明人： Kazushi Kimura , Kazunori Miura , Shigeki Ohtagaki
IPC分类号： G06F1900
CPC分类号： B62D5/0457 , B62D6/10
摘要： Disclosed is a power steering system which involves no dedicated equipment, no increase in cost, and no such hardware operation for correction as the mounting of an adjusting resistor. The power steering system includes an external device which outputs an arbitrary torque signal in an error measurement mode, and an electric power steering control device which detects the torque signal, computes the differential between the detected torque value and a reference torque value, stores the differential as a torque correction value, and, in the actual control mode, uses the detected torque value after correcting it by the torque correction value, whereby it is possible to perform reading error correction on a software basis and to expedite and automate the correction.
摘要翻译：公开了一种动力转向系统，其不涉及专用设备，不增加成本，并且没有这样的硬件操作用于校正调整电阻器的校正。动力转向系统包括在误差测量模式下输出任意转矩信号的外部装置和检测转矩信号的电动转向控制装置，计算检测到的转矩值与参考转矩值之间的差值，存储差动作为转矩校正值，在实际控制模式中，通过转矩修正值对其进行校正后的检测转矩值，由此能够以软件为基础进行读出错误校正，并能够加快校正自动化。

9. 发明授权

US5889376A Motor driving apparatus 失效
标题翻译：电机驱动装置
公开(公告)号：US5889376A
公开(公告)日：1999-03-30
申请号：US739050
申请日：1996-10-28
申请人： Yuji Takatsuka , Shigeki Ohtagaki
发明人： Yuji Takatsuka , Shigeki Ohtagaki
IPC分类号： B62D5/04 , H02H7/085 , H02P7/00 , H02P7/29 , H02K17/32
CPC分类号： B62D5/0487 , H02H7/0858 , H02P7/04
摘要： A motor driving apparatus which makes it possible to continue a suppressed power supply to an electric motor even when a detected value (Id) of a current flowing to an H-bridge circuit indicates abnormality, to thereby prevent occurrence of shock in a system in which the motor is employed as a drive source. The apparatus includes a current detecting device (12) for detecting an electric current (I) flowing to an H-bridge circuit (1), and a control device (20) which includes an abnormality decision device (24) for determining abnormality of the detected current value (Id) outputted from the current detecting device (12). When the detected current value (Id) indicates abnormality, both of the ones (Q1; Q4) of the transistors (Q1; Q2 and Q3; Q4) inserted at the side of the power supply source (3) and the ground (GND), respectively, are driven under the PWM control.
摘要翻译：即使在流向H桥电路的电流的检测值（Id）表示异常的情况下，也能够使对电动机的电力供给持续抑制的电动机驱动装置，由此，能够防止在电动机被用作驱动源。该装置包括用于检测流向H桥电路（1）的电流（I）的电流检测装置（12），以及包括用于确定异常的异常判定装置（24）的控制装置（20）检测从电流检测装置（12）输出的电流值（Id）。当检测到的电流值（Id）表示异常时，插入在电源（3）侧和地（GND）侧的晶体管（Q1; Q2和Q3; Q4）的两个（Q1; Q4）分别在PWM控制下驱动。

10. 发明授权

US4887840A Suspension control apparatus for a vehicle 失效
标题翻译：一种车辆悬架控制装置
公开(公告)号：US4887840A
公开(公告)日：1989-12-19
申请号：US267951
申请日：1988-11-07
申请人： Mitsuhiko Harara , Shozo Takizawa , Tadao Tanaka , Shunichi Wada , Shigeki Ohtagaki
发明人： Mitsuhiko Harara , Shozo Takizawa , Tadao Tanaka , Shunichi Wada , Shigeki Ohtagaki
IPC分类号： B60G17/00 , B60G17/015 , B60G17/016 , B60G17/08
CPC分类号： B60G17/016 , B60G2202/15 , B60G2204/11 , B60G2204/422 , B60G2204/81 , B60G2400/104 , B60G2400/204 , B60G2400/252 , B60G2400/34 , B60G2400/44 , B60G2400/821 , B60G2401/00 , B60G2401/14 , B60G2401/17 , B60G2500/10 , B60G2500/30 , B60G2600/02 , B60G2600/12 , B60G2600/14 , B60G2600/26 , B60G2600/66 , B60G2600/68 , B60G2600/70 , B60G2800/012 , B60G2800/014 , B60G2800/019 , B60G2800/162 , B60G2800/20 , B60G2800/24
摘要： Disclosed is a suspension control apparatus for a vehicle having a plurality of suspension units each disposed between a road wheel and the body of a vehicle for effectively and quickly correcting any deviation of the vehicle height from a normal height level immediately upon finishing of active suspension control operations. Priority is determined for vehicle-height control and various active suspension control operations such as roll control, nose-dive and squat control, and pitching and bouncing control so that normal vehicle-height control is stopped or inhibited during active suspension control operations are being carried out, thereby preventing the traveling attitude of the vehicle from being made unstable. Also, a vehicle-height control determining time interval from the instant when active suspension control operations has been finished until the time when vehicle-height control is restarted is substantially reduced as compared with that required in the case when the vehicle is traveling in a normal attitude without any active suspension control operation, whereby any deviation of the vehicle height from a target height level can be quickly removed to make the actual vehicle height match with a target height level in a very short time immediately after the finishing of the active suspension control operations.

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