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1. 发明专利

JP2003312511A Electric power steering device 审中-公开
标题翻译：电动转向装置
公开(公告)号：JP2003312511A
公开(公告)日：2003-11-06
申请号：JP2002119524
申请日：2002-04-22
申请人： Nsk Ltd , Toyota Motor Corp , トヨタ自動車株式会社 , 日本精工株式会社
发明人： KOIWAI HISAYOSHI , MURATA MASAHIRO , SAKATA KATSUTOSHI , KAWAI MASATO , FUKUDA YOSHISUMI
IPC分类号： B62D6/00 , B62D5/04 , B62D119/00 , B62D137/00
摘要： PROBLEM TO BE SOLVED: To suppress a shock feeling of a driver even when an ignition switch is turned off while torque is detected from a steering torque detecting means. SOLUTION: In an electric power steering device comprising a steering condition detecting means, a motor control signal generating means 3, a motor driving means, a motor current detecting means 6, a motor or controller temperature detecting means 12, a motor maximum current limiting means to determine a motor maximum current limit value 11 from the motor control signal generating means and the temperature detecting means, a failure determining means, and an operation stop detecting means 7 to detect an operation stop command of the motor control signal generating means, and having a mechanism to validate the motor maximum current control means based on the output of the operation stop detecting means 7, a motor control signal to the motor driving means is controlled so as not to exceed the motor maximum current limit value, and the motor maximum current limit value is updated if the motor control signal value is not more than the previous motor control signal value. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：即使当从转向转矩检测装置检测到扭矩时，即使当点火开关被关闭时，也可以抑制驾驶员的冲击感。解决方案：在一种电动助力转向装置中，包括转向条件检测装置，电动机控制信号发生装置3，电动机驱动装置，电动机电流检测装置6，电动机或控制器温度检测装置12，电动机最大值从电动机控制信号发生装置和温度检测装置确定电动机最大电流限制值11的电流限制装置，故障确定装置和检测电动机控制信号产生装置的操作停止命令的操作停止检测装置7 并且具有基于操作停止检测装置7的输出来验证电动机最大电流控制装置的机构，控制到电动机驱动装置的电动机控制信号，使其不超过电动机最大电流限制值，并且如果电机控制信号值不大于先前的电机控制信号值，则电机最大电流限制值被更新。版权所有（C）2004，JPO

2. 发明专利

JP2003312508A Electric power steering device 审中-公开
标题翻译：电动转向装置
公开(公告)号：JP2003312508A
公开(公告)日：2003-11-06
申请号：JP2002118862
申请日：2002-04-22
申请人： Nsk Ltd , Toyota Motor Corp , トヨタ自動車株式会社 , 日本精工株式会社
发明人： ITAKURA HIROSUKE , MURATA MASAHIRO , KAWAI MASATO , FUKUDA YOSHISUMI
IPC分类号： B62D6/00 , B62D5/04 , B62D101/00 , B62D119/00
摘要： PROBLEM TO BE SOLVED: To provide an electric power steering device capable of speedily stopping control while preventing a sense of incongruity and the uncontrollable state of a steering wheel caused as an assist is suddenly ceased and steering wheel operation becomes heavy when the electric power steering device is stopped. SOLUTION: The braking force of a motor generated at the stop of the electric power steering device is reduced by consuming residual energy by short- circuiting terminals of the motor by controlling an FET in a motor drive means. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种能够在防止不协调感的同时快速停止控制的电动助力转向装置，并且作为辅助而引起的方向盘的不可控制状态突然停止，并且当电动方向盘操作变得重时动力转向装置停止。解决方案：通过控制电动机驱动装置中的FET，通过消耗电动机的端子来消耗剩余能量来减少在电动转向装置停止时产生的电动机的制动力。版权所有（C）2004，JPO

3. 发明专利

JP2002211425A ELECTRIC POWER STEERING DEVICE 失效
公开(公告)号：JP2002211425A
公开(公告)日：2002-07-31
申请号：JP2001007366
申请日：2001-01-16
申请人： NSK LTD , TOYOTA MOTOR CORP
发明人： KAWADA HIDEAKI , ITAKURA HIROSUKE , OKAZAKI HIDEAKI , MURATA MASAHIRO , SAKATA KATSUTOSHI
IPC分类号： G01K7/00 , B62D5/04 , B62D6/00 , B62D101/00 , B62D119/00 , B62D137/00 , H02P29/02
摘要： PROBLEM TO BE SOLVED: To provide an electric power steering device having a function on a substitutive control used when a temperature sensor fails. SOLUTION: This electric power steering device comprises a function to limit a motor current based on the temperature sensor installed on the motor driving part of a control unit and a function to calculate an estimated motor temperature by adding a rise temperature calculated based on the motor current to an initial temperature where the temperature of the control unit when an ignition switch is turned on is regarded as the initial temperature of the motor and to limit the motor current based on the estimated motor temperature. When the temperature sensor is judged to be defective, a current is outputted to the motor based on the assist characteristics at the time of occurrence of the failure where the smaller continuous rated current of the control unit or the motor is considered to be the maximum.

4. 发明专利

JP2001047833A DAMPING COEFFICIENT CONTROL DEVICE OF VEHICLE 失效
公开(公告)号：JP2001047833A
公开(公告)日：2001-02-20
申请号：JP22247199
申请日：1999-08-05
申请人： TOYOTA MOTOR CORP
发明人： MURATA MASAHIRO
IPC分类号： B60G17/015 , B60G17/016 , B60G17/018 , B60G17/08 , B60G23/00
摘要： PROBLEM TO BE SOLVED: To properly improve driving performance and riding quality in response to a running condition of a vehicle by a simple control. SOLUTION: In this damping coefficient control device, target damping coefficient of a real shock absorber is calculated based on a vehicle model provided with a virtual shock absorber for heave control and virtual shock absorber for roll and pitch control which are disposed at virtual position arranged at predetermined intervals in longitudinal and lateral directions with respect to a center of a vehicle. In this case, a predetermined distance L and an incline angle θ in a direction to the virtual position from the vehicle center with respect to the vehicle lateral direction are variably set based on longitudinal acceleration and lateral acceleration of the vehicle (S20 to S510), and virtual damping coefficient of each of the virtual shock absorbers is variably set in accordance with a vibration state of the vehicle, sprung mass, vehicle speed, and sprung and unsprung relative motion (S520 to S700).

5. 发明专利

JP2001018622A VEHICULAR ATTENUATION COEFFICIENT CONTROL DEVICE 失效
公开(公告)号：JP2001018622A
公开(公告)日：2001-01-23
申请号：JP19222599
申请日：1999-07-06
申请人： TOYOTA MOTOR CORP
发明人： MURATA MASAHIRO , SUZUKI SATOSHI
IPC分类号： B60G17/015
摘要： PROBLEM TO BE SOLVED: To improve vehicular movement performance in the condition of the inversion of a turning direction. SOLUTION: An actual target attenuation coefficient of a shock absorber is operated, based on the attenuation coefficients of virtual shock absorbers for controlling heave and roll respectively arranged in the vehicular turning inner side (S620-780). When the size of the vehicular lateral acceleration Gy is large (S60), the inversion of the vehicular turning direction is judged, based on the code of a judged value Va which is the product of steering angles δ(n) and (0) at present and before n cycles respectively (S70 and 80). When the inversion of the turning direction is judged, the sudden inversion or not is judged by the standard value Vbe or more or not of a judged value Vb which is the sum of the absolure values of the angles δ(n) and δ(0) (S90 and 100): and when the turning direction is suddenly inverted, the attenuation coefficients Cgf and Cgr of the virtual shock absorber for controlling heave are set to the maximum values Cgfmax and Cgrmax for a given time (S40, 50, 110, and 120).

6. 发明专利

JP2001001734A DAMPING COEFFICIENT CONTROL SYSTEM FOR VEHICLE 失效
公开(公告)号：JP2001001734A
公开(公告)日：2001-01-09
申请号：JP17701099
申请日：1999-06-23
申请人： TOYOTA MOTOR CORP
发明人： MURATA MASAHIRO , OSAKU SATORU
IPC分类号： B60G17/015
摘要： PROBLEM TO BE SOLVED: To improve driving performance in the transient steering of a vehicle and improve vehicle performance with respect to a vehicle heaving movement. SOLUTION: In this damping coefficient control system, a target damping coefficient of an actual shock absorber is calculated based on virtual shock absorber damping coefficients and a relative speed of each wheel with respect to a vehicle body. Shock absorbers are disposed at the inner side of a turning vehicle for controlling heaving and rolling, and in the center of the vehicle for controlling heaving. Each virtual shock absorber damping coefficient is variably controlled (S260) according to vibration condition of the vehicle, sprung mass, a vehicle speed (S230, 235), and relative movement of sprung with respect to unsprung (S240-250).

7. 发明专利

JPH11268512A ATTENUATION COEFFICIENT CONTROLLER FOR VEHICLE 失效
公开(公告)号：JPH11268512A
公开(公告)日：1999-10-05
申请号：JP9267598
申请日：1998-03-20
申请人： TOYOTA MOTOR CORP
发明人： MURATA MASAHIRO
IPC分类号： B60G17/015
摘要： PROBLEM TO BE SOLVED: To improve a maneuverability in a vehicle transient turn by making different shock-absorber attenuation coefficients of inner and outer wheels turning so as to reduce the vehicle height. SOLUTION: A transient turning state of a vehicle is detected (S40), a turning direction thereof is detected (S70), a stroke speed of each wheel is computed (S60, 80, and 90), and a roll increasing process of the vehicle body is detected (S100, 140). Each shock-absorber attenuation coefficient Cj is computed (S110, 150) so that the turning inner shock-absorber attenuation coefficient is higher than that of the turning outer shock absorber when the roll of the vehicle body is increasing, while each shock-absorber attenuation coefficient Cj is computed (S120, 160) so that the turning outer shock-absorber attenuation coefficient is higher than that of the turning inner shock absorber when the roll of the vehicle body is decreasing.

8. 发明专利

JPH11139132A DAMPING FORCE CONTROL DEVICE FOR VEHICLE 失效
公开(公告)号：JPH11139132A
公开(公告)日：1999-05-25
申请号：JP30440297
申请日：1997-11-06
申请人： TOYOTA MOTOR CORP
发明人： IKEDA SHIGETERU , NAKAYAMA TOMOMI , SASAKI KAZUYA , MURATA MASAHIRO , SUZUKI SATOSHI , HASHIMOTO YOSHIYUKI
IPC分类号： B60G17/015
摘要： PROBLEM TO BE SOLVED: To improve comfortableness and maneuvering stability of a vehicle by damping vibration generated between a sprung member and an unsprung member of the vehicle, detecting a relative displacement state in a low speed area of the relative speed, and controlling damping force on the basis of a relative displacement direction and the change of speed. SOLUTION: Shock absorbers 10 provided with actuators 2 damping vertical vibration are disposed between a vehicle body 200 and lateral suspension arms 210 so as to adjust generated damping force. A stroke sensor 220 is disposed corresponding to each wheel. A sensor body is fixed to the vehicle body 200, and the tip of a detecting rod 221 is connected to the suspension arm 210 to detect the relative stroke quantity of wheels L, R to the vehicle body 206. An electronic control unit executes driving control of the actuators 2 of the shock absorbers 10 on the basis of the computed result based on the detected result of sensors for the stroke quantity of each wheel, vehicle speed, vertical acceleration, and the like.

9. 发明专利

JPH10278536A SUSPENSION CONTROL METHOD 失效
公开(公告)号：JPH10278536A
公开(公告)日：1998-10-20
申请号：JP8846997
申请日：1997-04-07
申请人： TOYOTA MOTOR CORP
发明人： MURATA MASAHIRO , NAKAYAMA TOMOMI , KOBAYASHI TOSHIYUKI , SHIBUYA HIROSHI
IPC分类号： B60G17/015 , G05B13/02 , G06F15/18 , G06N3/00
摘要： PROBLEM TO BE SOLVED: To always perform the optimal control independently of the using condition of a suspension such as a change with the lapse of time and a change of environment by applying immunological algorithm so as to optimize a parameter of a control regulation. SOLUTION: Sky hook control and IA control are carried out in order of stages 1-2, and when the stage 2 is concluded, the stages 1-2 are repeatedly carried out. Immunological algorithm(IA) introduces the immunological reaction of organism into a programing technique so as to form algorithm. Namely, in the stage 1, control of the sky hook is tested at about 10 seconds per each antibody of antibody I of new generation, and while a vehicle is made to travel, and in the stage 2 after concluding the test, the antibody I, which has the highest degree of compatibility between antigen and antibody, is used so as to perform the sky hook control, and while the vehicle is made to travel for about one hour.

10. 发明专利

JPH06286450A AIR SUSPENSION CONTROL DEVICE 失效
公开(公告)号：JPH06286450A
公开(公告)日：1994-10-11
申请号：JP9846793
申请日：1993-04-01
申请人： TOYOTA MOTOR CORP
发明人： MURATA MASAHIRO
IPC分类号： B60G17/015
摘要： PURPOSE:To properly and effectively control the attitude of a car body by correctly feeding/discharging a required quantity of operating gas. CONSTITUTION:The target gas mass Mo in an air chamber is calculated by a target gas mass arithmetic device 14 based on the travel state detected by a travel state detecting device 12, the actual gas mass M in the air chamber is calculated by an actual gas mass arithmetic device 16, and the deviation Mc between the actual gas mass M and the target gas mass Mo is calculated by a mass deviation arithmetic device 18. The open period of a feed or discharge control valve is calculated by an open period calculating device 24 based on the deviation Mc and feed mass flow Ms or discharge mass flow Md, and the feed or discharge control valve is controlled by a feed/discharge control device 26 based on this period.

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