| Summary: | Gas turbine engine performance improvement has been requested continuously for both
military and commercial applications due t various reasons. One of the issues is to save
fuel and/or to increase the engine life to meet the multi-mission and operation cost
economics
requirements. I order to satisfy the customers' requirements, the engine
manufacturers invested a lot of money and time if the gas turbine performance
improvement. The most straight forward and simple approach is to trade the excess
remained
surge margins for performance. NASA has demonstrated the feasibility of this
concept in their F-15 Highly Integrated Digital Electronic Control and Performance
Seeking Control programs. It offers not only obvious benefits if the overall system
performance improvement but also cost effective operations such a fuel saving and
extended component life. Those were carried out with traditional control approaches
which have to face the modelling difficulties. ' Due to successful control
implementations of fuzzy logic if various environment of uncertainties, a proportional
plus integral z logic controller if proposed. The fuzzy logic control system
simulation results prove that the fuzzy logic controller is appropriate for gas turbine
engine control. Basic fuzzy logic control concept is used with new approaches to
simplifying the fuzzy logic controller. I order to enhance the engine performance, fuzzy
logic control concept is used to optimize the engine performance parameters. A time
function linear control scheme is proposed to the engine to a new operation location
System simulation results prove the new methodology. It has to be understood that the
engine model used if this research is not representative of a gas turbine, but it `is
appropriate for the fuzzy logic control design analysis and simulation.
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