Open-loop turbine engine steady state control method

A technology of turbine engine and steady-state control, applied in engine components, machines/engines, mechanical equipment, etc., can solve problems such as engine speeding, overtemperature, etc., and achieve good results.
CN114458400APending Publication Date: 2022-05-10BEIJING POWER MACHINERY INST
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING POWER MACHINERY INST
Publication Date
2022-05-10

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Abstract

The open-loop turbine engine steady state control method does not depend on a rotating speed signal of the engine, and when the rotating speed signal of the engine breaks down, it can still be guaranteed that the engine works safely and reliably, preset thrust is given out, and use of an aircraft is met. According to the method, through engine thrust bridging, a mathematical model of engine throttle voltage and fuel flow in flight is established, and when it is detected that an engine rotating speed signal is abnormal and rotating speed closed-loop control cannot be adopted, the engine is controlled to work in an open-loop mode, so that the engine can still complete preset functions. Due to the fact that the rotating speed signal is abnormal, the maximum rotating speed and the minimum rotating speed of the engine cannot be limited, the oil supply boundary of the working area of the engine is designed through a mathematical model, and the oil supply boundary is corrected through the difference between the actual performance of the engine and the model engine.
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Description

technical field

[0001] The invention relates to the technical field of turbine engine control, in particular to an open-loop steady-state control method for a turbine engine. Background technique

[0002] At present, the steady-state control of turbine engines at home and abroad generally adopts the closed-loop control based on the speed, which is a control method to correct the fuel supply according to the feedback of the control object n (n represents the engine speed), and is assisted by the maximum physical speed limit, the maximum converted speed limit and The maximum gas temperature limit has the outstanding advantages of high control precision and high safety. However, due to the dependence on the gas path parameters and the engine speed signal, once the gas path parameters or the speed signal fail, the engine will run away or overheat, causing serious consequences. Contents of the invention

[0003] In view of this, the present invention proposes an open-loop stea...

Claims

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