| 摘要 |
A lower critical value curve of the jawing speed (PHI) is established taking account of the vehicle speed (VF) and the frictional value (mu) between the vehicle tyres and the road surface and, with the failure to reach the critical curve of the measured jawing speed (PHI), the brake pressure is reduced. The brake pressure is increased if an upper critical value of the jawing speed (PHI is exceeded. The method can take place in a vehicle with a single channel ABS control, provided with a sensor for detecting the vehicle acceleration in a longitudinal direction. A switching unit working on a microprocessor basis produces adjustment signals for a braking pressure modulator to give suitable braking relationship between front and rear axles and a brake pressure reducer can also be used. A superimposed regulator consists of a steering angle (delta) transmitter, a measurement value transmitter for the jawing speed, an evaluation circuit, a comparator and an 0R gate.
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