Abstract
This paper describes a unique fault-tolerant control design concept for More Electric aero-Engine (MEE). The MEE is based on a new control system architecture for aircraft engines, introducing electrical motor-driven accessories in place of conventional accessory gearbox driven pumps or hydraulic actuators. The MEE reflects a highly advantageous approach that improves engine efficiency and reduces fuel burn and CO2 emissions. However, it raises several issues with respect to engine safety and reliability. Using a redundant motor control system for the MEE based on a unique fault-tolerant design concept, the authors sought to resolve these issues. Studies of this system and the results of tests and experiments indicate that the proposed MEE fault-tolerant design should result in a safe, highly reliable engine control system.
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