Steering control system for vehicle
    5.
    发明授权
    Steering control system for vehicle 有权
    车辆转向控制系统

    公开(公告)号:US08234044B2

    公开(公告)日:2012-07-31

    申请号:US13052503

    申请日:2011-03-21

    IPC分类号: B62D6/00

    CPC分类号: B62D6/003 B62D5/008

    摘要: A steering control section has a first steering angle correction amount calculating section, a second steering angle correction amount calculating section, and a motor rotational angle calculating section. The first correction amount calculating section calculates a first correction amount based on a vehicle speed and an actual steering wheel angle. The second correction amount calculating section calculates a second correction amount through multiplying a control gain corresponding to the vehicle speed with a value calculated by low-pass filtering a differential value of steering wheel angle. The motor rotational angle calculating section calculates a motor rotational angle corresponding to the value adding the first and second steering angle correction amount, and outputs it to a motor driving section so as to drive an electric motor for correcting the steering angle. Thereby, an unstable vehicle behavior due to a resonance of a yaw motion caused in the steering operation can be suppressed.

    摘要翻译: 转向控制部具有第一转向角修正量计算部,第二转向角修正量计算部和电动机转动角计算部。 第一校正量计算部基于车速和实际方向盘角度来计算第一校正量。 第二校正量计算部分通过将与车速相对应的控制增益乘以通过对方向盘角度的差分值进行低通滤波而计算的值来计算第二校正量。 马达旋转角度计算部分计算与增加第一和第二转向角校正量的值相对应的马达旋转角度,并将其输出到马达驱动部分,以驱动用于校正转向角的电动马达。 由此,可以抑制由于在转向操作中引起的偏航运动的共振引起的不稳定的车辆行为。

    Steering control system for vehicle
    6.
    发明申请
    Steering control system for vehicle 有权
    车辆转向控制系统

    公开(公告)号:US20070039775A1

    公开(公告)日:2007-02-22

    申请号:US11477347

    申请日:2006-06-30

    IPC分类号: B62D5/04

    CPC分类号: B62D6/003 B62D5/008

    摘要: A steering control section has a first steering angle correction amount calculating section, a second steering angle correction amount calculating section, and a motor rotational angle calculating section. The first correction amount calculating section calculates a first correction amount based on a vehicle speed and an actual steering wheel angle. The second correction amount calculating section calculates a second correction amount through multiplying a control gain corresponding to the vehicle speed with a value calculated by low-pass filtering a differential value of steering wheel angle. The motor rotational angle calculating section calculates a motor rotational angle corresponding to the value adding the first and second steering angle correction amount, and outputs it to a motor driving section so as to drive an electric motor for correcting the steering angle. Thereby, an unstable vehicle behavior due to a resonance of a yaw motion caused in the steering operation can be suppressed.

    摘要翻译: 转向控制部具有第一转向角修正量计算部,第二转向角修正量计算部和电动机转动角计算部。 第一校正量计算部基于车速和实际方向盘角度来计算第一校正量。 第二校正量计算部分通过将与车速相对应的控制增益乘以通过对方向盘角度的差分值进行低通滤波而计算的值来计算第二校正量。 马达旋转角度计算部分计算与增加第一和第二转向角校正量的值相对应的马达旋转角度,并将其输出到马达驱动部分,以驱动用于校正转向角的电动马达。 由此,可以抑制由于在转向操作中引起的偏航运动的共振引起的不稳定的车辆行为。

    Steering control system for vehicle
    7.
    发明授权
    Steering control system for vehicle 有权
    车辆转向控制系统

    公开(公告)号:US07931113B2

    公开(公告)日:2011-04-26

    申请号:US11477347

    申请日:2006-06-30

    IPC分类号: B62D5/04

    CPC分类号: B62D6/003 B62D5/008

    摘要: A steering control section has a first steering angle correction amount calculating section, a second steering angle correction amount calculating section, and a motor rotational angle calculating section. The first correction amount calculating section calculates a first correction amount based on a vehicle speed and an actual steering wheel angle. The second correction amount calculating section calculates a second correction amount through multiplying a control gain corresponding to the vehicle speed with a value calculated by low-pass filtering a differential value of steering wheel angle. The motor rotational angle calculating section calculates a motor rotational angle corresponding to the value adding the first and second steering angle correction amount, and outputs it to a motor driving section so as to drive an electric motor for correcting the steering angle. Thereby, an unstable vehicle behavior due to a resonance of a yaw motion caused in the steering operation can be suppressed.

    摘要翻译: 转向控制部具有第一转向角修正量计算部,第二转向角修正量计算部和电动机转动角计算部。 第一校正量计算部基于车速和实际方向盘角度来计算第一校正量。 第二校正量计算部分通过将与车速相对应的控制增益乘以通过对方向盘角度的差分值进行低通滤波而计算的值来计算第二校正量。 马达旋转角度计算部分计算与增加第一和第二转向角校正量的值相对应的马达旋转角度,并将其输出到马达驱动部分,以驱动用于校正转向角的电动马达。 由此,可以抑制由于在转向操作中引起的偏航运动的共振引起的不稳定的车辆行为。

    Road-surface friction-coefficient estimating device
    8.
    发明授权
    Road-surface friction-coefficient estimating device 有权
    路面摩擦系数估计装置

    公开(公告)号:US08244432B2

    公开(公告)日:2012-08-14

    申请号:US12081245

    申请日:2008-04-11

    IPC分类号: B62D6/00

    CPC分类号: B60W40/068 B60W2510/202

    摘要: A road-surface friction-coefficient estimating device compares a rack-thrust-force deviation value with a preliminarily set maximum-value-determination threshold value. If the rack-thrust-force deviation value is above the maximum-value-determination threshold value, the device determines that tires are slipping, and sets a front-wheel friction-circle utilization rate in that state as a road-surface friction coefficient. If the rack-thrust-force deviation value is below the maximum-value-determination threshold value, the device refers to a preliminarily set map to determine a restoring speed at which the road-surface friction coefficient is to be restored to 1.0 based on a vehicle speed and a front-wheel slip angle. While restoring the road-surface friction coefficient at the restoring speed, the device calculates and outputs the road-surface friction coefficient.

    摘要翻译: 路面摩擦系数估计装置将机架推力偏差值与预先设定的最大值判定阈值进行比较。 如果齿条推力偏差值超过最大值判定阈值,则判断为轮胎滑动,并将该轮胎摩擦圆利用率设定为路面摩擦系数。 如果齿条推力偏差值低于最大值判定阈值,则该装置参照预先设定的地图,以基于以下方式确定路面摩擦系数为1.0的恢复速度 车速和前轮滑移角。 在恢复速度下恢复路面摩擦系数的同时,该装置计算并输出路面摩擦系数。

    Road-surface friction-coefficient estimating device
    9.
    发明申请
    Road-surface friction-coefficient estimating device 有权
    路面摩擦系数估计装置

    公开(公告)号:US20080262692A1

    公开(公告)日:2008-10-23

    申请号:US12081245

    申请日:2008-04-11

    IPC分类号: G06F7/00

    CPC分类号: B60W40/068 B60W2510/202

    摘要: A road-surface friction-coefficient estimating device compares a rack-thrust-force deviation value with a preliminarily set maximum-value-determination threshold value. If the rack-thrust-force deviation value is above the maximum-value-determination threshold value, the device determines that tires are slipping, and sets a front-wheel friction-circle utilization rate in that state as a road-surface friction coefficient. If the rack-thrust-force deviation value is below the maximum-value-determination threshold value, the device refers to a preliminarily set map to determine a restoring speed at which the road-surface friction coefficient is to be restored to 1.0 based on a vehicle speed and a front-wheel slip angle. While restoring the road-surface friction coefficient at the restoring speed, the device calculates and outputs the road-surface friction coefficient.

    摘要翻译: 路面摩擦系数估计装置将机架推力偏差值与预先设定的最大值判定阈值进行比较。 如果齿条推力偏差值超过最大值判定阈值,则判断为轮胎滑动,并将该轮胎摩擦圆利用率设定为路面摩擦系数。 如果齿条推力偏差值低于最大值判定阈值,则该装置参照预先设定的地图,以基于以下方式确定路面摩擦系数为1.0的恢复速度 车速和前轮滑移角。 在恢复速度下恢复路面摩擦系数的同时,该装置计算并输出路面摩擦系数。

    Vehicle control device and vehicle control method
    10.
    发明授权
    Vehicle control device and vehicle control method 有权
    车辆控制装置和车辆控制方法

    公开(公告)号:US07373236B2

    公开(公告)日:2008-05-13

    申请号:US10864820

    申请日:2004-06-10

    IPC分类号: G05D1/00

    摘要: Steering stability of a vehicle under a traveling state such as cornering is enhanced by controlling a state of the vehicle based on cornering powers of right and left wheels. A detecting unit 1 detects action force containing longitudinal force Fx, lateral force Fy and vertical force Fz which act on each wheel. A specifying unit 2 specifies a friction coefficient between the wheels and road surface. An estimating unit 6 estimates cornering power ka of each wheel based on the action force and the friction coefficient. A processing unit 7 determines control values so that the representative value ka_ave of the cornering powers concerning the right and left wheels is larger than the present value of the representative value ka_ave of the cornering powers concerning the right and left wheels. Controlling units 8 to 10 control the state of the vehicle based on the control values thus determined.

    摘要翻译: 基于左右车轮的转弯力控制车辆的状态来提高车辆在转弯等行驶状态下的转向稳定性。 检测单元1检测作用在每个车轮上的作用力,该作用力包含纵向力Fx,横向力Fy和垂直力Fz。 指定单元2指定车轮和路面之间的摩擦系数。 估计单元6基于作用力和摩擦系数来估计每个车轮的转弯功率ka。 处理单元7确定控制值,使得关于左右车轮的转弯力的代表值ka_ave大于关于左右车轮的转弯力的代表值ka_ave的当前值。 控制单元8至10基于由此确定的控制值来控制车辆的状态。