Control system
US5663713A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 1995 |
| Grant date | Sep 2, 1997 |
| Priority date | — |
| Expiry date | Sep 8, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/0754
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A control system comprises a controller for controlling an actuator, for instance of an electrically power assisted vehicle steering system. An unstable circuit, such as first and second cascade connected integrators has an input connected to the controller and an output connected to a detector, which signals an error when the output signal of the unstable circuit is outside an acceptable range. During normal operation, the controller supplies a signal to the unstable circuit such that its output signal remains within the acceptable range. The error signal may be used to disable the actuator, for instance so as to remove power assistance from steering system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.