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Turboshaft engine dynamic real-time model establishing method and system

A turboshaft engine, model modeling technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as lack of component characteristic data, reduce labor intensity, reduce calculation time, and save design and development. cost effect

Inactive Publication Date: 2014-06-04
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a turboshaft engine dynamic real-time model modeling method and system for the defects of the background technology, which is used to solve the traditional turboshaft engine dynamic real-time model when there is a lack of component characteristic data and only test data is provided. Airborne real-time model modeling problem, the method and system meet the airborne real-time requirements, and can provide model guarantee for sensor resolution redundancy technology

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  • Turboshaft engine dynamic real-time model establishing method and system

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Embodiment Construction

[0049] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0050] The idea of ​​the present invention is to aim at the real-time model requirements of advanced turboshaft engines in the absence of component characteristic data, expand on the basis of the existing general model modeling method of aeroengines, and use the dynamic acceleration and deceleration coefficient method of the remaining fuel flow to establish The dynamic real-time model of the turboshaft engine, including the start-up model, the gas generator model above the idle state, and the power turbine and load model, compared with the nonlinear component-level model, the calculation time consumption of the model is significantly reduced, and it can meet the airborne real-time performance Requirements, suitable for the lack of component characteristics and only based on test data modeling, and the designed engine dynamic real-time model automati...

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Abstract

The invention discloses a turboshaft engine dynamic real-time model establishing method and system. The method comprises the steps that a turboshaft engine dynamic real-time model is established; and a surplus oil flow dynamic coefficient adding and subtracting method is used for establishing the turboshaft engine dynamic real-time model. The problem that in an existing engine dynamic real-time model establishing process, modeling is carried out under the situation that only trail run data exist, and part feature data do not exist is solved, the method and system are suitable for engine numerical control system semi-physical simulation and can provide model guarantee for sensor analysis redundancy technology, and positive promotion effect is achieved on development cycle shortening and test risk and cost lowering.

Description

technical field [0001] The invention belongs to the field of aero-engine modeling and simulation, and in particular relates to a dynamic real-time model modeling method and system of a turboshaft engine. Background technique [0002] The failure of the control sensor will directly lead to the unavailable feedback information of the closed-loop control system, making the turboshaft engine unable to work stably. Therefore, whether the sensor of the turboshaft engine numerical control system can work stably and reliably is crucial to ensure the normal operation of the turboshaft engine FADEC system. important. Sensor analytical redundancy technology is a typical model-based sensor fault diagnosis method. The dynamic real-time model of the turboshaft engine is an important part of the method, and the accuracy of the model determines the sensor fault diagnosis performance. The dynamic real-time model of the shaft engine has important theoretical significance and engineering prac...

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Application Information

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IPC IPC(8): G06F17/50
Inventor 鲁峰黄金泉张冬冬姚文荣邢耀东
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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