专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP2003312509A Control device of electric power steering device 审中-公开
标题翻译：电动转向装置的控制装置
公开(公告)号：JP2003312509A
公开(公告)日：2003-11-06
申请号：JP2002118921
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： HARA TAKESHI , ENDO SHUJI , MURATA MASAHIRO , SAKATA KATSUTOSHI , KOBAYASHI NAOKI
IPC分类号： B62D6/00 , B62D5/04 , B62D101/00 , B62D107/00 , B62D119/00
摘要： PROBLEM TO BE SOLVED: To provide a control device of an electric power steering device capable of preventing a sudden decrease in assist force by gradually reducing an assist before and after the control device and a motor reach temperature limits (regardless of high temperature or low temperature) on the electric power steering device. SOLUTION: This electric power steering device is provided with a torque sensor to detect steering torque generated at least at a steering shaft and a motor to give steering an auxiliary force corresponding to the steering torque to a steering mechanism and recognizes from a temperature sensor or a temperature estimated value that the control device and the motor approach their temperature limit and multiplies an assist command value with a specified value to gradually become smaller than 1 as they approach the temperature limits when it is determined that the control device and the motor approach the temperature limits. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种电动助力转向装置的控制装置，其能够通过在控制装置之前和之后逐渐减小辅助力而突然减小，并且电动机达到温度限制（无论高温如何）或低温）在电动助力转向装置上。解决方案：该电动助力转向装置设置有转矩传感器，用于检测至少在转向轴和电动机产生的转向转矩，以将与转向转矩相对应的辅助力转向转向机构，并从温度传感器或温度估计值，当控制装置和电动机确定控制装置和电动机接近温度极限时，控制装置和电动机接近其温度极限并将辅助指令值与指定值相乘以逐渐变小于1 接近温度限制。版权所有（C）2004，JPO

2. 发明专利

JP2003175835A CONTROL SYSTEM FOR ELECTRIC POWER STEERING DEVICE 审中-公开
公开(公告)号：JP2003175835A
公开(公告)日：2003-06-24
申请号：JP2001376989
申请日：2001-12-11
申请人： NSK LTD , TOYOTA MOTOR CORP
发明人： HARA TAKESHI , ENDO SHUJI , MURATA MASAHIRO , SAKATA KATSUTOSHI , KOBAYASHI NAOKI
IPC分类号： B62D6/00 , B62D5/04 , B62D119/00
摘要： PROBLEM TO BE SOLVED: To provide a control system for an electric power steering device to be made not so as to react excessively even when inertia compensation is performed. SOLUTION: The control system for the electric power steering device controls the motor which gives an auxiliary steering force to a steering mechanism based on the current control value calculated from an auxiliary steering command value calculated with an operation means based on a steering torque generated in a steering shaft and the current value of a motor. The control system is equipped with a compensation part compensating the inertia of the motor and the steering mechanism, and the compensation output signal of the compensation part is impressed to the auxiliary steering command value through a band elimination filter which attenuates gain in the resonance frequency band of a vehicle and a system. COPYRIGHT: (C)2003,JPO

3. 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

4. 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.

5. 发明专利

JP2003312510A Control device of electric power steering device 审中-公开
标题翻译：电动转向装置的控制装置
公开(公告)号：JP2003312510A
公开(公告)日：2003-11-06
申请号：JP2002118923
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： HARA TAKESHI , ENDO SHUJI , MURATA MASAHIRO , SAKATA KATSUTOSHI , KOBAYASHI NAOKI
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 devised capable of stopping an output while gradually decreasing an assist before and after the electric power source voltage of a system reaches a set value regarded as abnormal. SOLUTION: This electric power steering device is provided with a torque sensor to detect steering torque generated at least at a steering shaft and a motor to give a steering auxiliary force corresponding to the steering torque to a steering mechanism, and multiplies an assist command value with a specified value gradually decreasing the smaller than 1 as it approaches a set value and reaching zero when it is determined that the electric power source voltage of the system approach the set value regarded as abnormal. COPYRIGHT: (C)2004,JPO
摘要翻译：解决的问题：提供一种电动助力转向装置，其能够在系统的电源电压达到设定值的前后逐渐减小辅助时停止输出。解决方案：该电动助力转向装置设有转矩传感器，用于检测至少在转向轴产生的转向转矩和电动机，以向转向机构提供对应于转向转矩的转向辅助力，并且将辅助具有指定值的指令值在接近设定值时逐渐减小到小于1，并且当确定系统的电源电压接近被认为是异常的设定值时达到零。版权所有（C）2004，JPO

6. 发明专利

JP2003212136A CONTROLLER FOR ELECTRIC POWER STEERING SYSTEM 审中-公开
公开(公告)号：JP2003212136A
公开(公告)日：2003-07-30
申请号：JP2002010988
申请日：2002-01-21
申请人： NSK LTD , TOYOTA MOTOR CORP
发明人： HARA TAKESHI , ENDO SHUJI , MURATA MASAHIRO , SAKATA KATSUTOSHI , KOBAYASHI NAOKI
IPC分类号： B62D6/00 , B62D5/04 , B62D101/00 , B62D119/00 , B62D137/00
摘要： PROBLEM TO BE SOLVED: To provide a controller for an electric power steering system that avoids a sudden variation in steering force just about an output limit of a motor when a characteristic with a high assist gain is adopted as in hydraulic power steering. SOLUTION: The controller for an electric power steering system controls the motor for applying steering assist force to a steering mechanism, on the basis of a current control value computed from a steering assist command value computed by an arithmetic means on the basis of steering torque generated on a steering shaft, and from a current value of the motor. A function is provided to detect that the motor approaches an output limit from a motor current, a motor terminal voltage and a motor angular velocity, and to multiply the steering assist command value by a coefficient gradually decreasing with approach to the output limit. COPYRIGHT: (C)2003,JPO

7. 发明专利

JP2003175837A CONTROL SYSTEM FOR ELECTRIC POWER STEERING DEVICE 审中-公开
公开(公告)号：JP2003175837A
公开(公告)日：2003-06-24
申请号：JP2001377088
申请日：2001-12-11
申请人： NSK LTD , TOYOTA MOTOR CORP
发明人： HARA TAKESHI , ENDO SHUJI , MURATA MASAHIRO , SAKATA KATSUTOSHI , KOBAYASHI NAOKI
IPC分类号： B62D6/00 , B62D5/04 , B62D101/00 , B62D111/00 , B62D119/00 , B62D137/00
摘要： PROBLEM TO BE SOLVED: To provide a control device for an electric power steering device capable of avoiding influence due to a measurement error of a back electromotive force and improving steering feeling by changing a set up of a dead band width according to steering torque. SOLUTION: The control system for the electric power steering device controls the motor which gives an auxiliary steering force to a steering mechanism based on the current control value calculated from an auxiliary steering command value calculated with an operation means based on a steering torque generated in a steering shaft and the current value of a motor. The control system estimates a motor angular acceleration from voltage and current of the motor and has a function to give the dead band width regarding the angular acceleration as zero when the estimated value of the motor angular acceleration is within a prescribed small range and makes the dead band width of the estimated value of the motor angular acceleration be the function of the steering torque. COPYRIGHT: (C)2003,JPO

8. 发明专利

JP2003170854A CONTROL DEVICE FOR ELECTRIC POWER STEERING DEVICE 审中-公开
公开(公告)号：JP2003170854A
公开(公告)日：2003-06-17
申请号：JP2001374112
申请日：2001-12-07
申请人： NSK LTD , TOYOTA MOTOR CORP
发明人： KOBAYASHI HIDEYUKI , MURATA MASAHIRO , SAKATA KATSUTOSHI , KAWAI MASATO
IPC分类号： B62D6/00 , B62D5/04 , B62D101/00 , B62D107/00 , B62D119/00
摘要： PROBLEM TO BE SOLVED: To provide a control device for an electric power steering device facilitated in adjustment of the steering feeling. SOLUTION: This control device for an electric power steering device is provided with a torque sensor for detecting the steering torque of a steering wheel, a motor for energizing a steering shaft, which is integrally provided with the steering wheel, with an assist load, and a control unit for driving the motor in response to a degree of the steering torque. This control device for an electric power steering device also has a motor temperature detecting means for detecting temperature of the motor, and a current command value correcting means for correcting a motor current command value on the basis of the temperature obtained by adding the predetermined offset value to the temperature detected by the motor temperature detecting means, and controls the motor current on the basis of the corrected motor current command value. COPYRIGHT: (C)2003,JPO

9. 发明专利

JP2003170844A CONTROL DEVICE FOR ELECTRIC POWER STEERING DEVICE 审中-公开
公开(公告)号：JP2003170844A
公开(公告)日：2003-06-17
申请号：JP2001374096
申请日：2001-12-07
申请人： NSK LTD , TOYOTA MOTOR CORP
发明人： SAKAGUCHI TORU , MURATA MASAHIRO , SAKATA KATSUTOSHI , FUKUDA YOSHISUMI
IPC分类号： B62D6/00 , B62D5/04 , B62D101/00 , B62D113/00 , B62D119/00 , H02P7/00 , H02P29/00
摘要： PROBLEM TO BE SOLVED: To provide an electric power steering device capable of preventing the generation of noise when stopping or traveling at a low-speed and capable of giving the excellent steering feeling when traveling at a high-speed by providing a current command value computing unit with a phase compensator for switching characteristic on the basis of the car speed and a stability judging unit for judging condition of a vehicle, and switching the phase compensation characteristic when the vehicle is stabilized. SOLUTION: In this electric power steering device, a current command value is computed on the basis of the steering torque signal and the car speed signal, and a motor for giving the steering assist force to the steering mechanism is controlled on the basis of the current command value. The electric power steering device is provided with the stability judging unit for judging condition of the vehicle to switch characteristic of the phase compensation unit in response to the car speed when the vehicle is stabilized. COPYRIGHT: (C)2003,JPO

10. 发明专利

JPH11208487A MOUNTING STRUCTURE OF STEERING GEAR BOX 失效
公开(公告)号：JPH11208487A
公开(公告)日：1999-08-03
申请号：JP32197198
申请日：1998-11-12
申请人： TOYOTA MOTOR CORP
发明人： SAKATA KATSUTOSHI
IPC分类号： B62D3/12
摘要： PROBLEM TO BE SOLVED: To allow changing the toe curve between two modes, in straight running and cornering, in an elastic supporting device for mounting a steering gear box of a vehicle on the vehicle body and properly set off large a linear region of compliance of a suspension which can be expressed by the relation of the lateral load of the vehicle with the lateral displacement. SOLUTION: A resilient supporting device 50 includes an outer cylinder 52 whose two ends are formed conically and central part cylindrically and an inner cylinder 51 whose ends are partially formed conically and central part cylindrically, and the space between the outer cylinder 52 and inner cylinder 51 is filled with a resilient material 53 while a part is left as cavity 54, wherein a slope 59 is formed to the axial direction of the outer cylinder 52 to allow the outer cylinder 52 to make displacement in the vertical direction relative to the inner cylinder 51 in compliance with the load input in the lateral direction of the vehicle, and thereby changeability for the toe curve is provided. The cavity 54 allows generating a linear region.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式