Turbine rotational speed measurement and control utilizing a...

Details Turbine rotational speed measurement and control utilizing a... Turbine rotational speed measurement and control utilizing a...

G - Physics

01

P

343/38, 341/95

G01P 3/44 (2006.01) G01S 13/58 (2006.01)

Patent

CA 1111941

ABSTRACT OF THE DISCLOSURE An electromagnetic system using a Doppler transceiver for the control and monitoring of the rotation speeds of various objects such as turbines. A digital readout of the revolutions per minute of the object is produced and thumb wheel counters are utilized to provide a maximum speed reference, which if exceeded, initiates a pulse to activate a solid gate relay for governor control. The system described is effective over RPM ranges of 250 to 30,000 RPM and the accuracy of speed measurement within plus or minus one-half percent. The range can be readily increased by using additional circuitry.

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