초록 ▼

The present invention provides a gas turbine engine surge control system comprising a pressure transducer positioned for sensing compressor discharge pressure, a hot wire anemometer positioned for sensing compressor discharge flow and temperature, means for electronically processing the signals from

The present invention provides a gas turbine engine surge control system comprising a pressure transducer positioned for sensing compressor discharge pressure, a hot wire anemometer positioned for sensing compressor discharge flow and temperature, means for electronically processing the signals from the sensors to obtain corrected compressor discharge flow without the use of look-up tables, and means for modulating a surge control valve based on corrected flow to prevent surge. The means for electronically processing said sensed signals incorporates means for canceling the dynamic response of the hot wire anemometer so as to have the effect of accelerating the response rate of the anemometer to match the response rate of the discharge pressure transducer.

대표청구항 ▼

[ What is claimed is:] [1.] A method for measuring a rapidly changing first parameter with a first sensor at the speed of a significantly faster responding second sensor, comprising the steps of:sensing a change in said first parameter with said first sensor and producing a first signal and sensing

[ What is claimed is:] [1.] A method for measuring a rapidly changing first parameter with a first sensor at the speed of a significantly faster responding second sensor, comprising the steps of:sensing a change in said first parameter with said first sensor and producing a first signal and sensing a change in a second parameter with a second sensor and producing a second signal, said first and second parameters being functionally related in a known way, and said signals each comprising a steady state component of said respective parameter, a transient component of said respective parameter, and a natural transient response component of said respective sensor wherein said natural transient response component of said second sensor is sufficiently fast that it can be ignored;blocking said steady state components of said first and second signals;reshaping said second signal to match said natural transient response component of said first sensor;combining said first and second signals so as to cancel said natural transient response component of said first sensor from said combined signal; andextracting a third signal from said combined signal indicative of the actual first parameter at the time the measurement was made.