MULTICHANNEL REGULATING DEVICE Russian patent published in 1995 - IPC

FIELD: control and regulation systems. SUBSTANCE: device has channels incorporating parameter sensor and set-point element, proportional-plus-integral feedback unit, on-off control unit, switch, OR gate, four AND gates, two adders, threshold unit, flip-flop, pilot lamp. Device also has majority units, control unit, actuating mechanism, regulating element, reset element, and unit selecting minimum and maximum values of signals. Fault in channel, such as false single signal, is detected by one of AND gates and that associated with false zero signal is detected by threshold unit. Device is designed so that any faulty channel can be replaced by serviceable one, this procedure being followed by its check and repair. EFFECT: improved repairability of device due to automatic detection of channel faults. 6 dwg