Pratt-whitney Canada Corp

Michael Darby

Brant Duke

Reza Pedrami

Dave Sellors

Michael Chun

Farzad Baghernezhad

Betty Augustyniak

Farzad Baghernezad

Methods and systems for sensor fault management are provided. A plurality of potential faults associated with a sensor are obtained. Accommodation approaches are associated with the plurality of potential faults. Severity levels are associated to the plurality of potential faults to produce a hierarchy of potential faults. A fault management tool is generated based on the hierarchy, the fault management tool defining a framework implementable by a controller associated with the sensor for accommodating faulty behaviour of the sensor by following the accommodation approaches of the hierarchy for the plurality of potential faults.

System and method for sensor fault management

There are described methods and systems for testing operation of a solenoid valve in a control system. A valve command is sent to successively open and close a solenoid valve. A flow command from a control system is monitored to detect a change in the flow command in response to the valve command. The flow command is associated with regulation of fluid flow in a process controlled by the control system. Operation of the solenoid valve is confirmed when the change in flow command is detected.

Method and system for testing operation of solenoid valves

A system and a method for detecting a shaft shear event in a gas turbine engine are disclosed. The system comprises a sensor configured to detect a shaft shear force exerted by a shaft on a support structure supporting the shaft where the shaft shear force is indicative of shearing of the shaft. The system also comprises a controller operatively coupled to the sensor and configured to initiate a shutdown of the gas turbine engine in response to the detection of the shaft shear force by the sensor.

Shaft shear detection for gas turbine engines

The multiple aircraft engine control system having a corresponding engine controller associated with each one of the engines, each one of the engine controllers having at least two independent channels, each one of the at least two independent channels having at least two communication buses, each one of the at least two communicating buses of each channel being connected to a respective one of the at least two communicating buses of each one of the other channels. The method can time-interweave originating data of the channels.

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Candiac, Canada

Michael Darby