Modeling method of gas compressor capable of achieving graded regulation and control over angles of adjustable vanes

Abstract

The invention relates to a modeling method of a gas compressor capable of achieving graded regulation and control over the angles of adjustable vanes. The modeling method of the gas compressor capable of achieving graded regulation and control over the angles of the adjustable vanes is suitable for the gas compressor with two-grade adjustable vanes, wherein adjustable guide vanes serve as one grade, and adjustable static vanes serve as the other grade. The modeling method of the gas compressor capable of achieving graded regulation and control over the angles of the adjustable vanes comprises the steps that firstly, features of the gas compressor with the angle of the adjustable guide vanes and the angle of the adjustable static vanes controlled respectively are established; secondly, gas compressor model calculation is completed with the established features of the gas compressor. The modeling method of the gas compressor capable of achieving graded regulation and control over the angles of the adjustable vanes achieves the purpose of establishing a model of the gas compressor with the angle of the adjustable guide vanes and the angle of the adjustable static vanes of an inlet controlled respectively, or solves the problem that design and testing need to depend on a control system of an engine model.

Description

technical field [0001] The invention belongs to the technical field of aero-engine design, and in particular relates to a modeling method for step-by-step regulation and control of an adjustable blade angle. Background technique [0002] The establishment of an aeroengine mathematical model is the basis for analyzing engine characteristics, studying control laws, conducting control system design, digital simulation and semi-physical simulation tests. The method of establishing the mathematical model of the engine according to the characteristics of the components is called the component method. At present, the component method is still the main method of engine modeling. The basic idea is to use the characteristics of each engine component and the common working conditions of the engine, such as flow balance, pressure balance, and equal speed conditions, to establish a nonlinear equation describing the aerodynamic and thermal characteristics of the engine. By solving the no...

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Problems solved by technology

[0005] At present, for an engine equipped with a compressor whose inlet adjustable guide vane angle and adjustable stator blade angle are controlled separately, the control system needs to use the engine model to realize the inlet adjustable of the control system during the design, simulation and semi-physical simulation test process. The two control loops of guide vane angle and adjustable stator vane angle are designed and tested. However, there is no characteristic description method for the compressor equipped with imported adjustable guide vane angle and adjustable stator vane angle. There is no design method for the modeling method of the engine model controlled separately by adjusting the angle of the inlet guide vane and the angle of the adjustable stator vane.

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