公开(公告)号：US4754835A

公开(公告)日：1988-07-05

申请号：US787073

申请日：1985-10-15

Applicant: Norbert Stelter ,  Matthias Dietz ,  Lothar Witte ,  Rainer Wuest

Inventor： Norbert Stelter ,  Matthias Dietz ,  Lothar Witte ,  Rainer Wuest

IPC: B60K17/348 ,  B60K23/04 ,  B60K23/08 ,  B60W10/00 ,  B60W10/10 ,  B60W10/12 ,  B60W10/18 ,  F16D48/12 ,  F16H59/00 ,  F16H59/14 ,  B60K17/34

CPC classification number: F16H59/00 ,  B60K23/04 ,  B60K23/0808 ,  F16H2059/142

Abstract: A control arrangement for a four-wheel drive vehicle which has at least one gear box or differential with controllable power transmission characteristics having circuitry for producing control signals in response to vehicle operating conditions and parameters. The arrangement allows for control of the distribution of torque to the respective wheels of the vehicle as a function of a selected number of parameters, such as relative or average wheel speed, engine speed, gas pedal or throttle valve angle, etc. The arrangement contemplates the simultaneous control of more than one adjustable gear box or differential as a function of commonly and/or separately sensed parameters.

Abstract translation: 一种用于四轮驱动车辆的控制装置，其具有至少一个具有可控制动力传递特性的齿轮箱或差速器，具有响应于车辆操作条件和参数产生控制信号的电路。 该布置允许根据所选数量的参数（例如相对或平均车轮速度，发动机速度，油门踏板或节气门角度等）来调节对车辆的各个车轮的扭矩分配。该布置考虑了 作为共同和/或单独感应的参数的函数同时控制多于一个可调齿轮箱或差速器。

公开(公告)号：US4961476A

公开(公告)日：1990-10-09

申请号：US330762

申请日：1989-03-30

Applicant: Lothar Witte ,  Norbert Stelter ,  Ulrich Appt ,  Rolf Geiger ,  Klaus-Gerhard Wolpert ,  Stephan Lawitzki

Inventor： Lothar Witte ,  Norbert Stelter ,  Ulrich Appt ,  Rolf Geiger ,  Klaus-Gerhard Wolpert ,  Stephan Lawitzki

IPC: B60K17/35 ,  B60K23/08 ,  B60T8/1761 ,  B60T8/1769 ,  F16D48/12

CPC classification number: B60K23/0808

Abstract: The arrangement controls a friction element for limiting a rotational speed compensation between the axles of a two-axle or all-wheel-driven vehicle as a function of the difference of the medium wheel speeds of both axles (longitudinal speed difference). This longitudinal speed difference is compared with two driving-speed-dependent tolerance bands, the first tolerance band being determining for positive and the second tolerance band being determining for negative longitudinal speed differences. If the values of the longitudinal speed differences are above the first or below the second tolerance band, the limiting is increased; if the values are within the tolerance bands, the instantaneous limiting is maintained; and if the values are between the tolerance bands, the limiting is reduced. This arrangement may also be expanded to include an adaptation device of the limit criteria with respect to different tread radii of the wheels and a cornering correction device.

Abstract translation: 该布置控制用于限制两轴或全轮驱动车辆的轴之间的转速补偿的摩擦元件，作为两轴的中轮速度差（纵向速度差）的函数。 将该纵向速度差与两个驱动速度相关的公差带进行比较，第一公差带被确定为正，第二公差带是确定负的纵向速度差。 如果纵向速度差的值高于第一或低于第二公差带，则限制增加; 如果值在公差带内，则保持瞬时限制; 并且如果这些值在公差带之间，则限制被减小。 该布置还可以扩展到包括相对于车轮的不同胎面半径和转弯校正装置的极限标准的适配装置。

公开(公告)号：US06754615B1

公开(公告)日：2004-06-22

申请号：US09522223

申请日：2000-03-09

Applicant: Stefan Germann ,  Harald Nonn ,  Wolfgang Kopecky ,  Georg Abler ,  Lothar Witte ,  Hai Tran Xuan ,  Michael Pfeiffer ,  Peter Brodbeck

Inventor： Stefan Germann ,  Harald Nonn ,  Wolfgang Kopecky ,  Georg Abler ,  Lothar Witte ,  Hai Tran Xuan ,  Michael Pfeiffer ,  Peter Brodbeck

IPC: G06G748

CPC classification number: B60C23/061 ,  B60C19/00 ,  B60C99/006 ,  B60T2270/86 ,  G01M13/025 ,  G06F17/5018 ,  G06F17/5095

Abstract: Method of simulating the performance of a vehicle on a roadway on a power train test bed with the help of torque-controlled electric load machines mounted on the shafts of the power train of the vehicle and with the help of a computer with a vehicle model stored therein and a tire model simulating the slip-dependent friction, in which method the angular wheel speed is measured on at least one of the shafts, and the tire model determines a force transmitted from the tire to the roadway at this angular wheel speed on the basis of the tire model using a vehicle velocity and a tire normal force, and it also determines a setpoint torque for this force for the torque-controlled load machine mounted on this shaft, in such a way that a difference corresponding to the actual slip is established between the measured angular wheel speed and a nominal angular wheel speed value corresponding to the vehicle velocity used in the tire model and calculated in the vehicle model with feedback of the force transferred to the road surface.

Abstract translation: 借助于安装在车辆的动力传动系的轴上的扭矩控制的电力负载机器和借助存储车辆模型的计算机来模拟在动力传动系试验台上的道路上的车辆的性能的方法 以及模拟滑移相关摩擦的轮胎模型，在该方法中，在至少一个轴上测量角轮速度，并且轮胎模型确定从轮胎以该角轮速度在道路上传递的力 使用车辆速度和轮胎法向力的轮胎模型的基础，并且还确定安装在该轴上的扭矩控制负载机器的该力的设定转矩，使得与实际滑移相对应的差异为 建立在测量的角轮速度和对应于在轮胎模型中使用的车速的标称角轮速度值之间，并且在车辆模型中计算出具有forc的反馈 e转移到路面。