Abstract: The present invention relates to a microprocessor arrangement for use in a vehicle control system which includes a plurality of microprocessor systems that are linked by bus systems and perform at least anti-lock control (ABS) and/or traction slip control (ASR) and at least one other high-computation control function, such as yaw torque control (GMR), and monitoring functions. The microprocessor arrangement includes three microprocessor systems to which the individual functions are allocated so that the first microprocessor system along with the second microprocessor system performs the ABS and ASR functions, including the monitoring of these functions, and that the third microprocessor system along with the second microprocessor system performs the other control function (GMR), including its monitoring.

Abstract: A control circuit for use with an automotive vehicle motion control system such as an anti-lock control (ABS) for an automotive vehicle brake system and/or traction slip control (TCS) includes circuits for processing sensor signals and for generating braking pressure control signals to enable hydraulic valves inserted into pressure fluid conduits of the brake system. The valve control signals are derived from the sensor signals by means of a single-chip microcontroller which processes the data in two successive or time-offset calculating operations performed according to different algorithms. The results of the calculating operations are temporarily stored and compared for coincidence. When the results differ from each other, their deviation is signaled to a monitoring circuit. In addition, the microcontroller is continuously tested by switch-on tests and, during operation, by cycle tests, self-tests, signature analyses and other known methods of error detection.