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    • 1. 发明申请
    • ELECTRIC POWER STEERING SYSTEM
    • 电力转向系统
    • US20100324783A1
    • 2010-12-23
    • US12818540
    • 2010-06-18
    • Akihiko NISHIMURATerutaka TamaizumiMasayuki KitaShinya AonoJun HasegawaAkira Nambu
    • Akihiko NISHIMURATerutaka TamaizumiMasayuki KitaShinya AonoJun HasegawaAkira Nambu
    • G06F19/00
    • B62D6/00B62D5/0463B62D5/0466
    • A steering torque shift control amount calculation unit (31) calculates the steering torque shift control amount (εts) by multiplying the basic shift amount (εts_b) used as the basic compensation component by the transition coefficient (Kss). Then, the steering torque shift control amount (εts) is subjected to the low-pass filter process in an abrupt change prevention processing unit (32). An abrupt change prevention processing unit (40) is provided in the steering torque shift control amount calculation unit (31). The transition coefficient (Kss) is subjected to the low-pass filter process in the abrupt change prevention processing unit (40). The cutoff frequency of the low-pass filter that forms the abrupt change prevention processing unit (40) is set to a value lower than the cutoff frequency of the low-pass filter that forms the abrupt change prevention processing unit (32) that executes the low-pass filter process on the torque shift control amount (εts).
    • 转向转矩转换控制量计算单元(31)通过将用作基本补偿分量的基本位移量(&egr; ts_b)乘以转换系数(Kss)来计算转向转矩转换控制量(&egr ts)。 然后,在突变改变防止处理单元(32)中对转向转矩转换控制量(& ts)进行低通滤波处理。 在转向转矩转换控制量计算单元(31)中设置有突变防止处理单元(40)。 过渡系数(Kss)在突变防止处理单元(40)中进行低通滤波处理。 形成防突变处理单元(40)的低通滤波器的截止频率被设定为低于形成防变频处理单元(32)的低通滤波器的截止频率的值, 低通滤波处理对转矩控制量(&egr。ts)的影响。
    • 2. 发明授权
    • Electric power steering apparatus
    • 电动助力转向装置
    • US08082080B2
    • 2011-12-20
    • US12476688
    • 2009-06-02
    • Masayuki KitaTerutaka TamaizumiAkihiko NishimuraShinya AonoJun HasegawaAkira Nambu
    • Masayuki KitaTerutaka TamaizumiAkihiko NishimuraShinya AonoJun HasegawaAkira Nambu
    • B62D6/00
    • B62D5/0463B62D5/0466
    • An electric power steering (EPS) apparatus 1 includes a motor 12, an EPS actuator 10, a torque sensor 14, and an ECU 11. The EPS actuator 10 uses the motor 12 as a drive source to apply assist force to a steering system, thereby assisting a steering operation. The torque sensor 14 detects a steering torque τ of the steering system. The ECU 11 controls the operation of the EPS actuator 10. Based on the steering torque τ detected by the torque sensor 14, the ECU 11 computes a basic shift amount εts_b of the assist force applied to the steering system. The ECU 11 determines which one of returning, holding, and turning is the state of the steering operation. When the state of the steering operation is returning or holding, the ECU 11 executes compensation control for correcting the steering torque τ, which is used in the computation of the basic shift amount εts_b of the assist force, thereby increasing the assist force applied to the steering system. The ECU 11 subjects the steering torque shift control amount εts to a filtering process using a low pass filter, thereby inhibiting the steering torque shift control amount εts from sharply changing. When the state of the steering operation is turning, the ECU 11 changes a filter constant of the low pass filter so as to reduce the filtering effect.
    • 电动助力转向(EPS)装置1包括电动机12,EPS致动器10,转矩传感器14和ECU 11. EPS致动器10使用电动机12作为驱动源向转向系统施加辅助力, 从而辅助转向操作。 转矩传感器14检测转向系统的转向转矩τ。 ECU11控制EPS致动器10的动作。根据由转矩传感器14检测出的转向转矩τ,ECU11计算施加于转向系统的辅助力的基本位移量& ts_b。 ECU11确定返回,保持和转动中的哪一个是转向操作的状态。 当转向操作状态返回或保持时,ECU11执行用于校正辅助力的基本位移量& ts_b的计算中使用的转向转矩τ的补偿控制,从而增加施加的辅助力 到转向系统。 ECU11使用低通滤波器对转向转矩转换控制量进行滤波处理,从而抑制转向转矩转换控制量的急剧变化。 当转向操作状态转动时,ECU11改变低通滤波器的滤波常数,从而降低滤波效果。
    • 3. 发明申请
    • ELECTRIC POWER STEERING APPARATUS
    • 电动转向装置
    • US20090299575A1
    • 2009-12-03
    • US12476688
    • 2009-06-02
    • Masayuki KITATerutaka TamaizumiAkihiko NishimuraShinya AonoJun HasegawaAkira Nambu
    • Masayuki KITATerutaka TamaizumiAkihiko NishimuraShinya AonoJun HasegawaAkira Nambu
    • B62D6/00G06F19/00
    • B62D5/0463B62D5/0466
    • An electric power steering (EPS) apparatus 1 includes a motor 12, an EPS actuator 10, a torque sensor 14, and an ECU 11. The EPS actuator 10 uses the motor 12 as a drive source to apply assist force to a steering system, thereby assisting a steering operation. The torque sensor 14 detects a steering torque τ of the steering system. The ECU 11 controls the operation of the EPS actuator 10. Based on the steering torque τ detected by the torque sensor 14, the ECU 11 computes a basic shift amount εts_b of the assist force applied to the steering system. The ECU 11 determines which one of returning, holding, and turning is the state of the steering operation. When the state of the steering operation is returning or holding, the ECU 11 executes compensation control for correcting the steering torque τ, which is used in the computation of the basic shift amount εts_b of the assist force, thereby increasing the assist force applied to the steering system. The ECU 11 subjects the steering torque shift control amount εts to a filtering process using a low pass filter, thereby inhibiting the steering torque shift control amount εts from sharply changing. When the state of the steering operation is turning, the ECU 11 changes a filter constant of the low pass filter so as to reduce the filtering effect.
    • 电动助力转向(EPS)装置1包括电动机12,EPS致动器10,转矩传感器14和ECU 11. EPS致动器10使用电动机12作为驱动源向转向系统施加辅助力, 从而辅助转向操作。 扭矩传感器14检测转向系统的转向转矩τ。 ECU11控制EPS致动器10的动作。根据由转矩传感器14检测出的转向转矩τ1,ECU11计算施加于转向系统的辅助力的基本位移量epsilonts_b。 ECU11确定返回,保持和转动中的哪一个是转向操作的状态。 当转向操作的状态返回或保持时,ECU11执行用于校正辅助力的基本位移量epsilonts_b的计算中使用的转向转矩τ的补偿控制,从而增加施加到转向操作的辅助力 转向系统。 ECU11使用低通滤波器对转向转矩转换控制量的epsil字符进行滤波处理,由此抑制转向转矩转换控制量的epsic字符急剧变化。 当转向操作状态转动时,ECU11改变低通滤波器的滤波常数,从而降低滤波效果。
    • 4. 发明申请
    • Electric power steering apparatus
    • 电动助力转向装置
    • US20050182541A1
    • 2005-08-18
    • US11057014
    • 2005-02-11
    • Terutaka TamaizumiShinya Aono
    • Terutaka TamaizumiShinya Aono
    • B62D5/04B62D6/00
    • B62D5/0463B62D5/046B62D5/0472
    • An electric power steering apparatus has a motor controlled so as to generate steering assist power according to the steering torque required to operate a steering wheel. As a result of correction of the output of the motor in accordance with a value correlating with the rotation angular velocity correspondence value of the steering wheel, in the frequency response characteristic represented by the steering frequency of the steering wheel and the amplitude ratio of the steering torque relative to the steering angle of the steering wheel, the amplitude ratio is set within a setting range, at least within the steering frequency range when a person operates the steering wheel. As a result of correction of the output of the motor in accordance with a value directly correlating with the change velocity correspondence value of the steering torque, in the frequency response characteristic represented by the frequency of the disturbance torque input from the road surface to the steering system via vehicle wheels and the amplitude ratio of the steering torque relative to the disturbance torque, the amplitude ratio becomes smaller at the resonance frequency.
    • 电动助力转向装置具有电动机,以便根据操作方向盘所需的转向转矩产生转向辅助动力。 根据与方向盘的旋转角速度对应值相关联的值校正马达的输出的结果,在由方向盘的转向频率表示的频率响应特性和转向的振幅比中 相对于方向盘的转向角的转矩,当人操作方向盘时,至少在转向频率范围内,将振幅比设定在设定范围内。 作为根据与转向转矩的变化速度对应值直接相关的值来校正电动机的结果,在由从路面输入到转向的干扰转矩的频率所表示的频率响应特性中 系统通过车轮和转向转矩相对于扰动转矩的幅度比,振幅比在共振频率下变小。
    • 5. 发明申请
    • Electric power steering apparatus
    • 电动助力转向装置
    • US20050061577A1
    • 2005-03-24
    • US10927528
    • 2004-08-27
    • Yoshinobu ShimizuShinya AonoAkihiro Nishiyama
    • Yoshinobu ShimizuShinya AonoAkihiro Nishiyama
    • B62D6/00B62D5/04B62D101/00B62D113/00B62D119/00
    • B62D5/0463
    • An electric power steering apparatus which transmits a driving force of an electric motor to a steering mechanism for steering assist. The apparatus is provided with: a torque sensor which detects a steering torque applied to an operation member for steering a vehicle; a basic assist characteristic determining section which determines a basic assist characteristic defining a basic characteristic of a motor driving target value for the steering torque; a motor driving target value determining section which determines the motor driving target value for the steering torque in accordance with a modified assist characteristic prepared by shifting the basic assist characteristic along a steering torque coordinate axis; a shift amount determining section which determines the amount of the shift from the basic assist characteristic to the modified assist characteristic on the basis of the steering torque; and a motor driving section which drives the electric motor on the basis of the motor driving target value.
    • 一种将电动机的驱动力传递到转向辅助转向机构的电动助力转向装置。 该装置设置有:扭矩传感器,其检测施加到用于转向车辆的操作构件的转向扭矩; 基本辅助特性确定部,其确定限定所述转向转矩的电动机驱动目标值的基本特性的基本辅助特性; 电动机驱动目标值确定部,其根据通过沿着转向扭矩坐标轴移动所述基本辅助特性而准备的改进的辅助特性来确定所述转向转矩的电动机驱动目标值; 换档量确定部,其基于转向扭矩确定从基本辅助特性到修正辅助特性的换档量; 以及基于电动机驱动目标值驱动电动机的电动机驱动部。
    • 6. 发明授权
    • Electric power steering apparatus
    • 电动助力转向装置
    • US07826950B2
    • 2010-11-02
    • US11667327
    • 2005-11-08
    • Terutaka TamaizumiShinya Aono
    • Terutaka TamaizumiShinya Aono
    • B62D5/04
    • B62D5/0463
    • In an electric power steering apparatus, steering torque of a steering wheel is detected by a torque sensor, and a motor 10 for generating steering assist power is controlled so that the steering assist power is generated according to a basic assist torque corresponding to the detected steering torque. A correspondence relationship between the steering torque and the basic assist torque is set such that an assist gradient that is a rate of change of the basic assist torque to the steering torque varies according to variation of the steering torque. A correction amount of an output of the motor 10 varies according to the variation of the assist gradient.
    • 在电动助力转向装置中,通过转矩传感器检测方向盘的转向转矩,并且控制用于产生转向辅助动力的电动机10,以便根据与检测到的转向相对应的基本辅助转矩来生成转向辅助动力 扭矩。 设定转向转矩与基本辅助转矩之间的对应关系,使得作为转向转矩的基本辅助转矩的变化率的辅助梯度根据转向转矩的变化而变化。 马达10的输出的校正量根据辅助梯度的变化而变化。
    • 7. 发明申请
    • Electric Power Steering Apparatus
    • 电动转向装置
    • US20080033613A1
    • 2008-02-07
    • US11667327
    • 2005-11-08
    • Terutaka TamaizumiShinya Aono
    • Terutaka TamaizumiShinya Aono
    • B62D6/10B62D5/04
    • B62D5/0463
    • In an electric power steering apparatus, steering torque of a steering wheel is detected by a torque sensor, and a motor 10 for generating steering assist power is controlled so that the steering assist power is generated according to a basic assist torque corresponding to the detected steering torque. A correspondence relationship between the steering torque and the basic assist torque is set such that an assist gradient that is a rate of change of the basic assist torque to the steering torque varies according to variation of the steering torque. A correction amount of an output of the motor 10 varies according to the variation of the assist gradient.
    • 在电动助力转向装置中,通过转矩传感器检测方向盘的转向转矩,并且控制用于产生转向辅助动力的电动机10,以便根据与检测到的转向相对应的基本辅助转矩来生成转向辅助动力 扭矩。 设定转向转矩与基本辅助转矩之间的对应关系,使得作为转向转矩的基本辅助转矩的变化率的辅助梯度根据转向转矩的变化而变化。 马达10的输出的校正量根据辅助梯度的变化而变化。
    • 8. 发明授权
    • Electric power steering apparatus
    • 电动助力转向装置
    • US07136732B2
    • 2006-11-14
    • US10927528
    • 2004-08-27
    • Yoshinobu ShimizuShinya AonoAkihiro Nishiyama
    • Yoshinobu ShimizuShinya AonoAkihiro Nishiyama
    • B62D6/04B62D6/00
    • B62D5/0463
    • An electric power steering apparatus transmits a driving force of an electric motor to a steering mechanism for steering assist. The apparatus includes a torque sensor which detects a steering wheel torque; a basic assist characteristic determining section which determines a basic assist characteristic defining a basic characteristic of a motor driving target value for the steering torque; a motor driving target value determining section which determines the motor driving target value for the steering torque in accordance with a modified assist characteristic prepared by shifting the basic assist characteristic along a steering torque coordinate axis; a shift amount determining section which determines the amount of the shift from the basic assist characteristic to the modified assist characteristic on the basis of the steering torque; and a motor driving section which drives the electric motor on the basis of the motor driving target value.
    • 电动助力转向装置将电动机的驱动力传递到转向辅助转向机构。 该装置包括检测方向盘扭矩的扭矩传感器; 基本辅助特性确定部,其确定限定所述转向转矩的电动机驱动目标值的基本特性的基本辅助特性; 电动机驱动目标值确定部,其根据通过沿着转向扭矩坐标轴移动所述基本辅助特性而准备的改进的辅助特性来确定所述转向转矩的电动机驱动目标值; 换档量确定部,其基于转向扭矩确定从基本辅助特性到修正辅助特性的换档量; 以及基于电动机驱动目标值驱动电动机的电动机驱动部。
    • 9. 发明授权
    • Electric power steering apparatus
    • 电动助力转向装置
    • US06999862B2
    • 2006-02-14
    • US11057014
    • 2005-02-11
    • Terutaka TamaizumiShinya Aono
    • Terutaka TamaizumiShinya Aono
    • G60F165/00
    • B62D5/0463B62D5/046B62D5/0472
    • An electric power steering apparatus has a motor controlled so as to generate steering assist power according to the steering torque required to operate a steering wheel. As a result of correction of the output of the motor in accordance with a value correlating with the rotation angular velocity correspondence value of the steering wheel, in the frequency response characteristic represented by the steering frequency of the steering wheel and the amplitude ratio of the steering torque relative to the steering angle of the steering wheel, the amplitude ratio is set within a setting range, at least within the steering frequency range when a person operates the steering wheel. As a result of correction of the output of the motor in accordance with a value directly correlating with the change velocity correspondence value of the steering torque, in the frequency response characteristic represented by the frequency of the disturbance torque input from the road surface to the steering system via vehicle wheels and the amplitude ratio of the steering torque relative to the disturbance torque, the amplitude ratio becomes smaller at the resonance frequency.
    • 电动助力转向装置具有电动机,以便根据操作方向盘所需的转向转矩产生转向辅助动力。 根据与方向盘的旋转角速度对应值相关联的值校正马达的输出的结果,在由方向盘的转向频率表示的频率响应特性和转向的振幅比中 相对于方向盘的转向角的转矩,当人操作方向盘时,至少在转向频率范围内,将振幅比设定在设定范围内。 作为根据与转向转矩的变化速度对应值直接相关的值来校正电动机的结果,在由从路面输入到转向的干扰转矩的频率所表示的频率响应特性中 系统通过车轮和转向转矩相对于扰动转矩的幅度比,振幅比在共振频率下变小。