Fault detecting apparatus and method
US5742624A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 1995 |
| Grant date | Apr 21, 1998 |
| Priority date | — |
| Expiry date | Feb 23, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/1181
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A control system for detecting a potentially faulty detector which may be causing faulty actuation of an actuator of a controlled system has an input-signal memory for storing the state of an input signal from the detector, an auxiliary input-signal memory for storing the state of an input signal provided by an auxiliary-signal generator, an arithmetic-logic unit for generating an output signal to be applied to the actuator in accordance with predetermined logic in conformity with the states of the input signals stored in the input-signal memory and auxiliary input-signal memory, and an output-signal memory for storing the state of an output signal generated by the arithmetic-logic unit. An identification code of an abnormal output signal corresponding to the abnormal actuator which is designated, and an input signal that has influenced a logical operation, performed by the arithmetic-logic unit, and which gave rise to the designated abnormal output signal, is extracted. If the extracted input signal is the signal that has been stored in the input-signal memory, an identification code of this input signal is stored in a storage device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.