Registers – Transfer mechanism – Traveling pawl
Patent
1973-11-02
1977-06-07
Wise, Edward J.
Registers
Transfer mechanism
Traveling pawl
23515121, 444 1, F01D 1900
Patent
active
040285324
ABSTRACT:
Improved turbine speed controlling valve operation is provided through the accumulation for direct entry into a digital computer of a count of displacement pulses generated by incremental rotation of the turbine output shaft. The digital computer is operative to position the control valves in response to the speed of rotation of the output shaft calculated either as a function of the number of pulses accumulated in a predetermined interval or the time required to accumulate a preselected count, depending upon the operating point of the turbine. The accumulation of displacement pulses can be inhibited while the time measurement is being read to avoid errors in measurement.Resumption of the accumulation of displacement pulses and the measurement of time is synchronized to preserve accuracy.
REFERENCES:
patent: 3552872 (1971-01-01), Giras et al.
patent: 3555251 (1971-01-01), Shavit
patent: 3561216 (1971-02-01), Moore, Jr.
patent: 3564273 (1971-02-01), Cockrell
patent: 3588265 (1971-06-01), Berry
patent: 3686484 (1972-08-01), Ciemochowski
Computer and Apparatus for Measuring Rotational Speed; S. Bederman; IBM Technical Disclosure Bulletin; vol. 13 No. 4, Sept. 1970, pp. 1017-1018.
Application of the PRODAC 50 System to Direct Digital Control, J. C. Belz, G. J. Kirk & P. S. Radcliffe, IEEE Intl. Conv. Rec. Part 3, 1965, pp. 102-122.
Monitoring and Automatic Control in Steam Power Stations by Process Computer, E. Doetsch & G. Hirschberg, Siemens Review XXXV(1968), No. 12, pp. 471-476.
Possessky E. F.
Westinghouse Electric Corporation
Wise Edward J.
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