General Electric Company

Arthur C Chen

William D Barber

Gerald J Carlson

Norman C Gittinger

James R Whitten

Walter H Berninger

Thomas Y Wong

John N Russell

Leo P Buckley, Jr

Burnette P Chausse

A control system including a controller for reading temperature values from sensors in a gas turbine, determining the reliability of the sensors, and issuing a fuel control signal for use in controlling the turbine is disclosed. The fuel control signal has a calculated value which is a function of the turbine operating temperature derived from the values of temperature signals generated by the sensors.

Control system and method for controlling a gas turbine in accordance

A tomographic x-ray imaging system comprises a large plurality of parallel data acquisition channels which integrate and digitize signals from an array of x-ray detectors. Calibration pulses are injected into each data acquisition channel to permit measurement of drift in electronic gain and dc offset parameters. Separate x-ray detectors continuously monitor the intensity of the x-ray source. The measured values for channel gains, dc offsets, and source intensity are fed to a digital computer where they are automatically combined with x-ray transmission data to compensate for system drift and extend the period between calibration measurements.

X-ray data acquisition system and method for calibration

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Schenectady, NY, United States of America

Arthur C Chen