Method for building covered wire inner full-state turbofan engine vehicle-mounted real-time model

A turbofan engine and construction method technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as turbofan engines that have not yet been seen, and shorten the development cycle, reduce model errors, and model calculation consumption. small effect

Inactive Publication Date: 2014-07-23
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

At present, in terms of engine airborne model modeling and simulation, there is no report on an airborne real-time model construction method that can simulate the full state of a turbofan engine starting within the envelope, including afterburner and above idle, and has certain adaptive capabilities.

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  • Method for building covered wire inner full-state turbofan engine vehicle-mounted real-time model
  • Method for building covered wire inner full-state turbofan engine vehicle-mounted real-time model
  • Method for building covered wire inner full-state turbofan engine vehicle-mounted real-time model

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Embodiment Construction

[0048] The idea of ​​the present invention is to expand, design and develop the existing aero-engine simulation model for the needs of advanced aero-engine model-based multi-variable control and predictive health management, and establish a simplified model for starting, without afterburner, above the idle state The airborne real-time model of the full-state aeroengine within the envelope including the adaptive real-time dynamic model and the real-time dynamic model of the afterburner state, compared with the nonlinear model, the calculation time consumption of this model is significantly reduced, which meets the real-time requirements of the airborne, and The model error caused by the individual differences of the engine and performance degradation can be reduced in the state above the idle speed, and the real-time model of the engine onboard can be guaranteed to have a high degree of confidence.

[0049] The specific implementation of the present invention takes the construct...

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Abstract

The invention discloses a method for building a covered wire inner full-state turbofan engine vehicle-mounted real-time model. The method comprises the steps of firstly building a vehicle-mounted real-time dynamic model, indicating an applied force-included and above-idle-speed state, of a turbofan engine, then, building a starting simplified model of the turbofan engine, finally, utilizing a Kalman filter for estimating gas circuit performance characteristic parameters of the turbofan engine, and building a vehicle-mounted self-adaptation real-time model indicating the applied force-included and above-idle-speed state. The method can meet the requirement of a covered wire full-state general model of the turbofan engine for precision and vehicle-mounted real-time performance, the strong adaptive capacity for model mismatch caused by the engine individual difference and performance degradation is obtained, model foundation is provided for experimental verification of a modern control theory and a fault-tolerant control method, and the method plays a positive and promotion role in shortening the preparation time, reducing test risk and cost.

Description

technical field [0001] The invention relates to the field of modeling and simulation of aero-engines, in particular to a method for constructing an airborne real-time model of a turbofan engine in all states within an envelope. Background technique [0002] Turbofan engine airborne real-time model modeling technology is the key technology of engine control and fault diagnosis, mainly reflected in the use of this model to realize engine adaptive adjustment control and ensure engine performance, and it is also a model-based engine control system sensor fault An important prerequisite for diagnosis, isolation and fault-tolerant control. Using the nonlinear average model of the engine as the reference design control parameter will make the performance of the engine unable to reach the designed working state and reduce the design margin. The fault diagnosis, isolation and reconstruction of the sensor of the engine control system based on the model is to use the sensor's dual The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G05B13/04
Inventor 鲁峰黄金泉冯敏杨刚吴伟超
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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