Threshold Models in Gas Turbine Engine Control Systems

Presents a mathematical model of the automatic control system (ACS) for a gas turbine engine (GTE). A distinguishing feature of the proposed mathematical model ACS is that the primary control loop, driven by the reference signal, incorporates control loops for the main parameters of the gas turbine engine. The problem of controlling an overdetermined system is formulated, and the limitations of traditional selective control approaches are highlighted. A control framework for overdetermined systems based on threshold models ofcollective behavior is proposed. The structure of the threshold model is developed, where the key regulated parameters of the gas turbine engine act as agents. The main model parameters, such as influence coefficients and threshold values, are identified using an experimental approach. The performance of the standard selector, adaptive fuzzy group controller, and threshold collective behavior model is analyzed. The research was conducted using a generalized mathematical model of an aircraft engine.