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    • 11. 发明授权
    • Traction control system using estimated road surface friction coefficient
    • 牵引力控制系统采用估计路面摩擦系数
    • US5353225A
    • 1994-10-04
    • US718959
    • 1991-06-21
    • Toshiaki TsuyamaToru OnakaKazutoshi NobumotoMakoto Kawamura
    • Toshiaki TsuyamaToru OnakaKazutoshi NobumotoMakoto Kawamura
    • B60R16/02B60T8/172B60T8/175B60T8/1763F02D29/02B60K41/00
    • B60T8/175B60T2270/208
    • A traction control system for a motor vehicle having driving wheels and driven wheels includes a device for detecting the speed of each of the driving wheels of the vehicle, a device for detecting the speed of each of the driven wheels of the vehicle, a device for calculating a slip value of the driving wheels based on the detected speeds of the driving and driven wheels, a traction control device for controlling the driving wheel so that the slip value of each driving wheel is equal to a predetermined desired slip value when the slip value of each driving wheel is greater than the predetermined desired slip value, and a device for estimating a friction coefficient of a road surface which is employed when the predetermined desired slip value is determined. If slip of the driving wheel occurs when the vehicle is started, the estimating device calculates an acceleration of the driving wheel. The friction coefficient of the road surface is estimated based on an engine output when the acceleration of the driving wheel is greater than a predetermined value.
    • 用于具有驱动轮和从动轮的机动车辆的牵引力控制系统包括用于检测车辆的每个驱动轮的速度的装置,用于检测车辆的每个从动轮的速度的装置, 基于检测到的驱动轮和从动轮的速度来计算驱动轮的滑移值;牵引控制装置,用于控制驱动轮,使得当滑动值为每个驱动轮的滑移值等于预定的期望滑移值时 每个驱动轮的大小大于所述预定的滑动值,以及用于估计在确定了所述预定滑动值时采用的路面的摩擦系数的装置。 如果在车辆启动时发生驱动轮的滑动,则估计装置计算驱动轮的加速度。 当驱动轮的加速度大于预定值时,基于发动机输出来估计路面的摩擦系数。
    • 12. 发明授权
    • Traction control system for motor vehicle
    • 汽车牵引力控制系统
    • US5328006A
    • 1994-07-12
    • US718962
    • 1991-06-21
    • Toshiaki TsuyamaToru OnakaKazutoshi NobumotoMakoto Kawamura
    • Toshiaki TsuyamaToru OnakaKazutoshi NobumotoMakoto Kawamura
    • B60T8/172B60T8/175B60T8/1763B60K41/20
    • B60T8/175B60T2270/208Y10T477/814Y10T477/816Y10T477/817
    • A traction control system for a motor vehicle having driving wheels and driven wheels includes a device for detecting the speed of each of the driving wheels of the vehicle, a device for detecting the speed of each of the driven wheels of the vehicle, a device for calculating a slip value of the driving wheels based on the detected speeds of the driving and driven wheels, a traction control device for controlling the driving wheel so that the slip value of each driving wheel is equal to a predetermined desired slip value when the slip value of each driving wheel is greater than the predetermined desired slip value, and a device for estimating a friction coefficient of a road surface which is employed when the predetermined desired slip value is determined. The estimating device calculates, in a first predetermined time period immediately after the traction control is started, an acceleration of the driven wheel based on a speed difference of the driven wheel during a second predetermined time period and an acceleration of the driven wheel based on a speed difference of the driven wheel during a third predetermined time period after the first predetermined time period has passed. The estimating device then estimates the friction coefficient of the road surface by using the calculated acceleration of the driven wheel.
    • 用于具有驱动轮和从动轮的机动车辆的牵引力控制系统包括用于检测车辆的每个驱动轮的速度的装置,用于检测车辆的每个从动轮的速度的装置, 基于检测到的驱动轮和从动轮的速度来计算驱动轮的滑移值;牵引控制装置,用于控制驱动轮,使得当滑动值为每个驱动轮的滑移值等于预定的期望滑移值时 每个驱动轮的大小大于所述预定的滑动值,以及用于估计在确定了所述预定滑动值时采用的路面的摩擦系数的装置。 估计装置在紧接牵引力控制开始后的第一预定时间段内,基于来自第二预定时间段期间的从动轮的速度差和从动轮的加速度,基于 在经过第一预定时间段之后的第三预定时间段期间从动轮的速度差。 估计装置然后通过使用所计算的从动轮的加速度来估计路面的摩擦系数。
    • 17. 发明授权
    • Slip control system for motor vehicle
    • 电动车滑动控制系统
    • US5193888A
    • 1993-03-16
    • US658753
    • 1991-02-21
    • Haruki OkazakiToru OnakaKazutoshi NobumotoFumio KageyamaMakoto Kawamura
    • Haruki OkazakiToru OnakaKazutoshi NobumotoFumio KageyamaMakoto Kawamura
    • B60T8/175B60T8/1761B60T8/48B60T8/58
    • B60T8/48B60T8/175
    • A slip control system for a motor vehicle controls slippage of driving wheels and includes, a sensor for detecting a slip ratio of each driving wheel, a device for detecting a reduction in speed of each wheel, and a traction control system for decreasing a slip of each driving wheel by controlling brake fluid pressure in each driving wheel so that the slip ratio of each driving wheel is at least equal to a predetermined desired slip ratio when the slip ratio of each driving wheel becomes equal to the desired slip ratio. The system further includes an antiskid brake system for controlling brake fluid pressure, based on the reduction speed of each wheel, so as to cancel a lock condition of the wheel. The antiskid brake system has a first control device for controlling the brake pressure fluid in a condition in which a traction control operation is not carried out by the traction control system, and a second control device for controlling the brake pressure fluid in a condition in which a traction control operation is carried out by the traction control system.
    • 用于机动车辆的滑动控制系统控制驱动轮的滑动,并且包括用于检测每个驱动轮的滑移率的传感器,用于检测每个车轮的速度降低的装置,以及用于减少滑动的牵引力控制系统 每个驱动轮通过控制每个驱动轮中的制动液压力使得当每个驱动轮的滑移比变得等于期望的滑移率时,每个驱动轮的滑移比至少等于预定的期望滑移率。 该系统还包括用于基于每个车轮的减速度控制制动液压力的防滑制动系统,以消除车轮的锁定状态。 防滑制动系统具有第一控制装置,用于在牵引控制系统不执行牵引控制操作的状态下控制制动压力流体;以及第二控制装置,用于在下述情况下控制制动压力流体: 牵引力控制系统由牵引力控制系统进行。