System and method for engine speed measurement
AssigneePratt & Whitney Canada Corp.
InventorAntwan Shenouda
Life of this patent
Estimating the term…
Abstract
A system and method for measuring a speed of an engine are provided. The engine has a positive displacement pump drivingly connected to a rotor shaft thereof, the pump having an inlet for receiving a fluid supply and an outlet for outputting pressurized fluid. A sensor signal is received from a pressure sensing device provided at an inlet of the pump, the sensor signal comprising a series of periodic oscillations. A frequency of the oscillations is determined, the frequency proportional to a rotational speed of the rotor shaft. The speed of the engine is then determined from the frequency of the oscillations and the speed of the engine as determined is output for controlling operation of the engine.
Claims16
A system for measuring a speed of a gas turbine engine, the system comprising:
- a positive displacement pump drivingly connected to a rotor shaft of the gas turbine engine, the pump having an inlet for receiving a fluid supply and an outlet for outputting pressurized fluid;
- a pressure sensing device provided at an inlet of the pump;
- at least one processing unit;
- and
- at least one non-transitory computer-readable memory having stored thereon program instructions executable by the at least one processing unit for:
- receiving, from the pressure sensing device, a sensor signal comprising a series of periodic oscillations,
- determining a frequency of the oscillations, the frequency proportional to a rotational speed of the rotor shaft,
- determining the speed of the gas turbine engine from the frequency of the oscillations as determined, and
- outputting the speed of the gas turbine engine as determined for controlling operation of the engine.
A computer-implemented method for measuring a speed of a gas turbine engine, the gas turbine engine having a positive displacement pump drivingly connected to a rotor shaft thereof, the pump having an inlet for receiving a fluid supply and an outlet for outputting pressurized fluid, the method comprising:
- receiving, at a computing device, a sensor signal from a pressure sensing device provided at an inlet of the pump, the sensor signal comprising a series of periodic oscillations;
- determining, at the computing device, a frequency of the oscillations, the frequency proportional to a rotational speed of the rotor shaft;
- determining, at the computing device, the speed of the gas turbine engine from the frequency of the oscillations as determined;
- and
- outputting, at the computing device, the speed of the gas turbine engine as determined for controlling operation of the engine.
A non-transitory computer readable medium having stored thereon program code executable by at least one processor for:
- receiving a sensor signal from a pressure sensing device provided at an inlet of a positive displacement pump drivingly connected to a rotor shaft of a gas turbine engine, the sensor signal comprising a series of periodic oscillations;
- determining a frequency of the oscillations, the frequency proportional to a rotational speed of the rotor shaft;
- determining the speed of the gas turbine engine from the frequency of the oscillations as determined;
- and
- outputting a speed of the gas turbine engine as determined for controlling operation of the engine.
Dependencies are inferred from the claim text.