Schaltungsanordnung für eine Bremsanlage mit Blockierschutz- und Antriebsschlupfregelung

摘要

A circuit arrangement designed for a brake system with antilock (ABS) and traction (drive slip) control (BASR) comprises a hydraulic pump (6, 6', 22) driven by an electric motor to provide auxiliary pressure in the ABS and BASR modes, sensors (S1 - S4) to detect the wheel rotation behaviour and an electronic circuit (8, 11) to assess the sensor signals and to generate pressure control signals. In the BASR mode the hydraulic pump is controlled (at least at times) by a pulse sequence, the output of the pump (6, 6', 22) being matched to requirements by modulating the pulse sequence and the requirements being found by assessing the drive slip (vS1, vS2) and the current revolution speed (nist) of the hydraulic pump (6, 6', 22). There are pulse grids (TAKT1, TAKT2, TAKT3, Perm.) in the form of pulse sequences with given pulse duration and intervals to control the pump.