The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 12, 1985
Filed:
Aug. 27, 1982
Robert G Burrage, Solihull, GB;
Lucas Industries PLC, , GB;
Abstract
An apparatus, for example a gas turbine engine is normally controlled by a digital first computer which is responsive to engine operating conditions. A second computer is responsive to selected ones of said conditions. Control signals from the digital computer are monitored by a circuit which generates analog signals which lie within acceptable ranges and which correspond to the values generated by the digital computer. The monitor circuit supplies the engine with signals selected from whichever of the analog value and corresponding digital value lies farthest from a predetermined limit. Predetermined levels of discrepancy between any of the analog values and its corresponding digital value cause control of the engine to be transferred to the second computer, which may also be a digital computer.