| 摘要 |
The invention refers to a method for preventing slipping (at acceleration) and/or skidding (at deceleration) between driveable and breakable wheels and the supporting surface in vehicle traction systems, in which method the rotary speed of each of the wheels or wheel axles is measured and rotary speed differentials are determined, if any, and furthermore the acceleration of said wheels or axles is measured. According to the invention it is provided, dependent on actual direction of travel of the vehicle an expectation output signal, which when acceleration is expected, brings the wheel or axle which has too high a rotary speed in relation to the other wheels or axles and/or an excessive acceleration in comparison with a calculated maximum possible acceleration, to release a slip indication, by means of which steps are taken for eliminating said slipping, while said signal when deceleration is expected, brings the wheel or axle which has the lowest relative rotary speed or excessive negative acceleration in comparison with a calculated possible negative acceleration, respectively, to release a skid indication, by means of which steps likewise are taken for eliminating said skidding. The respective indications are maintained until, when acceleration is expected, the slipping wheel or axle exhibits negative acceleration, and when deceleration is expected, the skidding wheel or axle exhibits positive acceleration, the rotary speed differentials between the wheels or axles lying within a predetermined range of limit values, whereby said method is capable of responding also to so-called creeping slipping or skidding of one or more wheels or axes of the vehicle. |
