Control apparatus with frequency-dependent control elements and

Details Control apparatus with frequency-dependent control elements and Control apparatus with frequency-dependent control elements and

1978-05-30

1979-09-04

Engle, Samuel W.

176 24, 60644, 60646, 60657, G21C 700

Patent

active

041667620

ABSTRACT:
A control loop for regulating the magnitude of a variable quantity of an apparatus to a reference value, for example the steam pressure in the output line from a boiling water reactor, wherein the instantaneous magnitude of the steam pressure is compared with a reference value and the difference therebetween is used to regulate a valve in the steam line in such manner as to eliminate the difference. The control loop also includes one resonance filter for the regulating medium whose resonant frequency coincides with the frequency at which the control loop, in the absence of such a filter, would become unstable.

REFERENCES:
patent: 1194188 (1916-08-01), Keiser
patent: 2884955 (1959-05-01), Yost
patent: 3051883 (1962-08-01), Smith
patent: 3080309 (1963-03-01), Samuel
patent: 3184662 (1965-05-01), Wallace
patent: 3332849 (1967-07-01), Kagi
patent: 3351826 (1967-10-01), Quarnstrom
patent: 3555291 (1971-01-01), Dewey
patent: 3579154 (1971-05-01), Deen
patent: 3625815 (1971-12-01), Fishman
patent: 3660744 (1972-05-01), Plummer
Servomechanism Analysis, McGraw Hill, N.Y. (May 25, 1953), Thaler et al., pp. 92, 158-168.

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