초록 ▼

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 genera

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.

대표청구항 ▼

A full-authority digital control system comprising an apparatus responsive to electrical input signals, a first digital computer responsive to a plurality of operating conditions of said apparatus for generating first digital control signals, a second computer responsive to at least some of said ope

A full-authority digital control system comprising an apparatus responsive to electrical input signals, a first digital computer responsive to a plurality of operating conditions of said apparatus for generating first digital control signals, a second computer responsive to at least some of said operating conditons for generating second control signals, switching means for deriving said input signals either from said first or from said second control signals, and a monitoring circuit including means responsive to at least some of said operating conditions for generating limiting values of said first control signals, said monitoring circuit also including means for deriving said input signals only from those of said first control signals which are within said limiting values, said switching means being responsive to excursions for more than a predetermined time of any of said first control signals beyond a limiting value thereof, for isolating said apparatus from said first control signals and for causing said input signals to be derived from said second control signals.