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    • 2. 发明授权
    • Process for determining a safety margin for a traveling motor vehicle
    • 确定行驶机动车辆的安全余量的过程
    • US5357798A
    • 1994-10-25
    • US6841
    • 1993-01-21
    • Alfred WeinzerlJurgen HolzingerWolfgang Hirschberg
    • Alfred WeinzerlJurgen HolzingerWolfgang Hirschberg
    • B62D6/00B60T8/1755B60W30/02B60W40/06B62D103/00B62D105/00B62D111/00B62D113/00B62D133/00B62D137/00G01N19/02E01C23/00G01M17/02
    • B60W40/101B60T8/17551B60W30/045G01N19/02B60T2210/12
    • A process for determining a safety margin with respect to adhesion between tires and roadway of a travelling motor vehicle comprises, detecting longitudinal and transverse acceleration values (ax, ay), a rotational wheel acceleration value (Phi), and a dynamic steering angle value, and producing signals indicative thereof. A longitudinal adhesion value (Six) is determined as a function of the longitudinal acceleration (ax) and the rotational wheel acceleration (Phi), while a transverse adhesion value (Siy) is determined as a function of the transverse acceleration (ay) and the dynamic steering angle. Maximum attainable longitudinal and transverse acceleration values (axLIM, ayLIM) are next determined by multiplying the longitudinal and transverse acceleration values (Six, Siy) by vehicle specific coefficients (Kx, Ky) and a limit curve (aLIM), e.g., an ellipse, is established. Next a current vehicle movement state vector (AF) is formed by a vectorial combination of the longitudinal and transverse acceleration values (ax, ay). A safety margin value (SAFLIM) is obtained by comparing the lengths of the vehicle movement state vector (AF) with a collinear limit vector (AMAX) which reaches the limit curve (aLIM), and the safety margin value (SAFLIM) is displayed to the driver. Desirably, if the safety margin value (SAFLIM) exceeds predetermined threshold values, perceptible warning signals, e.g., a yellow light and then a red light, are triggered.
    • 用于确定相对于行驶的机动车辆的轮胎和车道之间的附着力的安全裕度的过程包括:检测纵向和横向加速度值(ax,ay),旋转车轮加速度值(Phi)和动态转向角度值, 并产生指示其的信号。 纵向粘附值(Six)被确定为纵向加速度(ax)和旋转轮加速度(Phi)的函数,而横向粘附值(Siy)被确定为横向加速度(ay)的函数,并且 动态转向角。 通过将纵向和横向加速度值(Six,Siy)乘以车辆特定系数(Kx,Ky)和极限曲线(aLIM)(例如椭圆)来确定最大可达到的纵向和横向加速度值(axLIM,ayLIM) 成立 接下来,通过纵向和横向加速度值(ax,ay)的矢量组合形成当前的车辆运动状态矢量(AF)。 通过将车辆移动状态向量(AF)的长度与达到极限曲线(aLIM)的共线极限矢量(AMAX)进行比较,并将安全余量值(SAFLIM)显示为 司机。 理想地,如果安全余量值(SAFLIM)超过预定阈值,则触发可见警报信号,例如黄灯,然后红灯。
    • 4. 发明授权
    • Control method and device for steering the rear wheel of a vehicle
    • 用于转向车辆后轮的控制方法和装置
    • US5392214A
    • 1995-02-21
    • US985149
    • 1992-12-03
    • Nobuo MomoseKiichi YamadaHiroaki Yoshida
    • Nobuo MomoseKiichi YamadaHiroaki Yoshida
    • B62D6/00B62D7/14B62D7/15B62D101/00B62D105/00B62D111/00B62D113/00B62D133/00B62D5/00
    • B62D7/159Y10S706/90
    • Various steering coefficients (KB, KC, KG) are decided in accordance with a detected car speed (V), while a correction amount (X) and a correction factor (Y) are determined by fuzzy reasoning in accordance with a detected road surface friction coefficient (.mu.), road surface gradient (.alpha.), and lateral acceleration (G). A reference in-phase steering amount (.delta.RB), equal to a product of a reference in-phase steering coefficient (KB) and a detected steering wheel angle (.theta.H), is corrected by an in-phase correction steering amount (.delta.RC), which is equal to a product of an in-phase steering coefficient (KC) and the detected steering wheel angle (.theta.H), with a delay determined by a time constant (T) calculated from the correction amount (X), to thereby determine a corrected in-phase steering amount (.delta.R). A corrected anti-phase steering amount (.delta.G), obtained by multiplying a reference anti-phase steering amount (.delta.GB), equal to a product of the anti-phase correction coefficient (KG) and a detected steering wheel angular velocity (.theta.HA), by the correction factor (Y), is added to the corrected in-phase steering amount (.delta.R), to thereby obtain a rear-wheel steering amount (.delta.) on which the rear wheels are so steered as to match the road surface friction coefficient, road surface gradient, and lateral acceleration.
    • 根据检测到的车速(V)来决定各种转向系数(KB,KC,KG),同时通过模糊推理根据检测到的路面摩擦来确定校正量(X)和校正因子(Y) 系数(μ),路面坡度(α)和横向加速度(G)。 参考同相转向量(delta RB)等于参考同相转向系数(KB)和检测到的方向盘角度(θH)的乘积,通过同相校正转向量(delta RC),其等于同相转向系数(KC)和检测到的方向盘角度(θH)的乘积,并且由由校正量(X)计算的时间常数(T)确定的延迟, 从而确定校正的同相转向量(ΔR)。 通过将参考反相转向量(deltaGB)乘以相等于反相校正系数(KG)与检测到的方向盘角速度(θ)的乘积获得的校正的反相转向量(delta G) HA)通过校正因子(Y)被添加到校正的同相转向量(ΔR)中,从而获得后轮转向量(delta),在后轮转向量(delta)上,后轮被转向以匹配 路面摩擦系数,路面坡度和横向加速度。
    • 6. 发明授权
    • Electric control apparatus for rear wheel steering mechanism of wheeled
vehicle
    • 轮式车后轮转向机构电控装置
    • US5311956A
    • 1994-05-17
    • US974421
    • 1992-11-12
    • Mizuho Sugiyama
    • Mizuho Sugiyama
    • B62D6/00B62D7/14B62D7/15B62D101/00B62D113/00B62D133/00B62D137/00
    • B62D7/159B62D7/1581
    • An electric control apparatus for a rear wheel steering mechanism in a four-wheel steering system of a wheeled vehicle is designed to detect a yaw rate of the vehicle body for determining a target steering amount for steering a set of dirigible rear road wheels in accordance with a magnitude of the detected yaw rate in a direction restraining the yaw rate of the vehicle body and to produce a control signal indicative of the target steering amount for applying it to an electrically operated actuator of the rear wheel steering mechanism. The electric control apparatus is further designed to detect a roll angle and/or a roll angle speed of the vehicle body and to determine a correction amount for steering the rear road wheels in accordance with a magnitude of the detected roll angle and/or roll angle speed in an opposite direction relative to the direction restraining the yaw rate of the vehicle body and adding the correction amount to the target steering amount.
    • 一种用于轮式车辆的四轮转向系统中的后轮转向机构的电气控制装置被设计成检测用于确定目标转向量的车体的偏航率,以便根据 检测到的横摆率的大小在限制车身的横摆率的方向上,并且产生表示目标转向量的控制信号,以将其施加到后轮转向机构的电动致动器。 电气控制装置还被设计成检测车体的侧倾角和/或侧倾角速度,并且根据检测到的侧倾角和/或侧倾角的大小来确定用于转向后轮的修正量 相对于限制车体的横摆角速度的方向在相反方向上的速度,并将校正量与目标转向量相加。
    • 7. 发明授权
    • Motor-driven servo steering system
    • 电动伺服转向系统
    • US5205371A
    • 1993-04-27
    • US749876
    • 1991-08-26
    • Dean Karnopp
    • Dean Karnopp
    • B62D5/00B62D5/04B62D5/30B62D6/00B62D6/04B62D101/00B62D117/00B62D133/00B62D137/00
    • B62D5/008
    • The present invention is a motor-driven servo steering system for a motor vehicle having an actuator for superimposing steering intervention on the steering wheel power applied by the driver. Power provided by a power supply, for example an electric motor, is superimposed on the steering wheel power applied by the driver and thereby aids and boosts the steering wheel power. In addition to or instead of the boosting effect, the steering systems of the vehicle can be acted upon through steering signals that increase the road safety and/or the travel comfort. Because the system is responsive to steering wheel velocity, the system has a high inherent safety, where in case of power supply failure the driver has a direct mechanical access to the steering systems, without increasing the steering wheel torque required to be applied by the driver.
    • 本发明是一种用于机动车辆的电动伺服转向系统,其具有用于将驾驶员施加的方向盘动力上的转向干预重叠的致动器。 由电源(例如电动机)提供的电力叠加在由驾驶员施加的方向盘动力上,从而有助于提高方向盘功率。 除了或代替增压效果,车辆的转向系统可以通过提高道路安全性和/或行驶舒适度的转向信号来起作​​用。 由于系统响应于方向盘速度,系统具有高的固有安全性,其中在电源故障的情况下,驾驶员可以直接机械地接近转向系统,而不增加由驾驶员施加的方向盘扭矩 。
    • 9. 发明授权
    • Method for controlling yaw and transversal dynamics in a road vehicle
    • US06909957B2
    • 2005-06-21
    • US10344283
    • 2001-08-15
    • Avshalom Suissa
    • Avshalom Suissa
    • B62D6/00B62D7/14B62D7/15B62D101/00B62D111/00B62D113/00B62D133/00
    • B62D7/159B62D6/00
    • For the purpose of controlling the yaw dynamics and lateral dynamics in a road vehicle with electrically controlled four-wheel steering, in the case of which the setting of the front axle steer angle δv and of the rear axle steer angle δh is performed by means of mutually decoupled control loops, a desired value δvsoll for the lateral force Sv to be built up at the front axle is determined in the control loop assigned to the front axle and, for this desired value Svsoll, the value of the slip angle, linked to the desired value Svsoll, is determined as desired value αvsoll from an Sv(αv) characteristic representing the dependence of the lateral force Sv, to be built up at the front axle, on the slip angle αv. In the control loop assigned to the rear axle, a desired value Shsoll for the lateral force Sh to be built up at the rear axle is determined in a control process in accordance with a controller law of the form S hsoll = l v · m · v x L · [ Ψ . - β hsoll + k 1 · ( β h - β ⁢ - hsoll ) ] and, for this desired value Shsoll, the value of the slip angle, linked to the desired value Shsoll, is determined as desired value αhsoll from an Sh(αh) characteristic. These desired values αvsoll and αhsoll are used to determine the desired values δvsoll and δhsoll of the steer angle, taking account of an estimated value of the sideslip angle β at the center of gravity of the vehicle, the position of the center of gravity and measured or estimated values of the yaw velocity {dot over (Ψ)} and of the longitudinal speed vx of the vehicle.