Control circuit for automotive vehicle motion control systems
US5713643A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 12, 1996 |
| Grant date | Feb 3, 1998 |
| Priority date | — |
| Expiry date | Feb 12, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/2829
- WIPO fieldTransport
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.