Fault detecting system for a control system

Details Fault detecting system for a control system Fault detecting system for a control system

1977-10-25

1979-10-16

Rubinson, Gene Z.

Electricity: motive power systems

Braking

Automatic and/or with time-delay means

318616, 318618, 318327, 361 51, 318146, G05B 500

Patent

active

041715055

ABSTRACT:
In a speed feedback control system wherein a speed command signal and a speed feedback signal are compared and wherein the deviation between these signals is entered into a speed control unit, the speed signal is differentiated to apply speed damping in order to suppress the oscillations of the control system. In this case, while the speed command and the actual speed make a great difference transiently, the speed command is approximate to the sum between the speed feedback signal and the damping signal even transiently. Therefore, the speed command signal is compared with the sum between the speed feedback signal and the damping signal, and the fault of the speed control system is detected upon the fact that the deviation has exceeded a predetermined value.

REFERENCES:
patent: 3004201 (1961-10-01), Fath
patent: 3019379 (1962-01-01), Zarleng
patent: 3059161 (1962-10-01), Bailey et al.
patent: 3732478 (1973-04-01), MacMullan
patent: 3826961 (1974-07-01), Hayase et al.

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