公开(公告)号：US3709565A

公开(公告)日：1973-01-09

申请号：US3709565D

申请日：1970-10-26

Applicant: SAAB SCANIA AB

Inventor： JONASON A ,  GRANLUND G

IPC: B60T8/58 ,  B60T8/17 ,  B60T8/172 ,  B60T8/176 ,  B60T8/1761 ,  B60T8/32 ,  B60T8/66 ,  B60T8/72 ,  B60T8/08

CPC classification number: B60T8/17613 ,  B60T8/1703 ,  B60T8/172 ,  B60T8/324 ,  B60T8/72

Abstract: In a motor car or other wheeled vehicle provided with electronically controlled wheel brakes, the lag or slip of the individual wheels is determined to render possible a control such that locking and skidding of the wheels is prevented. During braking, the brake of one wheel of the vehicle is intermittently released so that the wheel is intermittently free-running without slip. The speed of the vehicle is continuously measured by an accelerometer of simple type and an integrator integrating the accelerometer output. The true speed of the vehicle is intermittently measured by a speed transducer associated with said wheel and having an output representative of true speed during the free-running interval of the wheel. The approximate continuous speed value is recurrently updated by the intermittent true speed signal so that the integrator output is proportional to the ratio of the speed of the vehicle to that of the wheel and is a quantity to control the brake of the wheel in dependence of the slip of the wheel by comparison with a permissible or tolerable slip limit value.

Abstract translation: 在具有电子控制的轮胎制动器的汽车或其他轮式车辆中，确定各个车轮的滞后或滑动使得可以进行控制，使得防止车轮的锁定和打滑。 在制动期间，车辆的一个车轮的制动器被间歇地释放，使得车轮间歇地自由运行而没有滑动。 车辆的速度通过简单类型的加速度计和积分器加速度计输出的积分器连续测量。 通过与所述车轮相关联的速度传感器间歇地测量车辆的真实速度，并且在车轮的自由运行间隔期间具有表示真实速度的输出。 大致的连续速度值通过间歇的真实速度信号反复更新，使得积分器输出与车辆的速度与车轮的速度成比例，并且是根据车轮的制动来控制车轮制动的量 与允许或允许的滑移极限值进行比较，可以将车轮滑动。

公开(公告)号：US3744849A

公开(公告)日：1973-07-10

申请号：US3744849D

申请日：1970-10-26

Applicant: SAAB SCANIA AB

Inventor： JONASON A ,  GRANLUND G

IPC: G01P3/56 ,  B60T7/12 ,  B60T8/00 ,  B60T8/172 ,  B60T8/1761 ,  B60T8/42 ,  B60T8/58 ,  B60T8/66 ,  G01P3/42 ,  G01P3/54 ,  B60T8/10

CPC classification number: B60T8/17613 ,  B60T8/00 ,  B60T8/172 ,  B60T8/4225 ,  B60T2250/04 ,  G01P3/42

Abstract: In a brake control system of wheeled vehicles, particularly of motor cars, an arrangement measures the vehicle speed by means of an accelerometer of simple type to produce a signal representing the speed of a braked individual wheel relative to the vehicle speed. The wheel is intermittently braked to be temporarily freerunning without slip so that the true vehicle speed is repeatedly measured by an inductive or other speed transmitter. Furthermore, the vehicle speed is continuously, though inaccurately, measured by integration of the output of an accelerometer of a simple cheap type. This integrated output is repeatedly corrected by being updated with the true vehicle speed intermittently measured by the speed transmitter when the wheel is free-running. During those periods during which the wheel is braked and may be lagging (slipping), the measured wheel speed differs from the updated speed represented by the integrated and updated accelerometer output. By comparison of these two speed values, an electrical signal representing the slip is produced and may be used for temporarily releasing the brake means of the vehicle when slip occurs or at least when the ratio of slip to speed passes a predetermined limit value. Any accelerometer output representing a negative retardation, i.e. positive acceleration, is suppressed.

Abstract translation: 在特别是汽车的轮式车辆的制动控制系统中，布置通过简单类型的加速度计来测量车辆速度，以产生表示相对于车辆速度的制动的单个车轮的速度的信号。 车轮被间歇地制动以暂时自由运行而没有滑动，使得真实车辆速度由感应式或其他速度变送器重复测量。 此外，通过将简单廉价型的加速度计的输出的积分测量，车速连续地通过不准确地测量。 当车轮自由运行时，通过由速度变送器间歇地测量的真实车速来更新该集成输出。 在车轮被制动并可能滞后（滑动）的那些时期期间，测量的车轮速度与由积分和更新的加速度计输出表示的更新速度不同。 通过比较这两个速度值，产生表示滑动的电信号，并且可以用于在滑动发生时临时释放车辆的制动装置，或者至少当滑差与速度的比率通过预定极限值时。 抑制表示负的延迟，即正加速度的任何加速度计输出。