Aircraft task reliability modeling method based on dynamic characteristics

A technology of dynamic characteristics and modeling methods, which is applied in the fields of instruments, special data processing applications, electrical digital data processing, etc., to achieve the effect of good promotion and application prospects

Active Publication Date: 2015-12-30
CHINA ACAD OF LAUNCH VEHICLE TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] The problem solved by the present invention is: overcome the deficiencies in the prior art, provide a kind of aircraft task reliability modeling method based on dynamic characteristics, can more accurately describe the dynamic characteristics in the compl

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  • Aircraft task reliability modeling method based on dynamic characteristics
  • Aircraft task reliability modeling method based on dynamic characteristics
  • Aircraft task reliability modeling method based on dynamic characteristics

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Embodiment Construction

[0031] A kind of aircraft task reliability modeling method based on dynamic characteristics proposed by the present invention, below in conjunction with accompanying drawing, take aircraft as an example to further describe the present invention in detail, as figure 1 The steps shown are as follows:

[0032] Step (1), carry out aircraft system analysis and task analysis, and establish aircraft task consequence state set

[0033] The aircraft is composed of structural system, mechanism system, measurement and control system, propulsion system, thermal control system and GNC system and other subsystems, and its function is to perform space operation tasks.

[0034] The mission requirement of the aircraft is to return to the ground safely after completing the specified mission. The mission profile is divided into three stages: launch and ascent, space operation and return to landing. The success criteria are as follows: if all three mission stages are successful, the entire missi...

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Abstract

The invention relates to an aircraft task reliability modeling method based on dynamic characteristics. The method includes the steps of firstly, conducting aircraft system analysis and task analysis, and establishing an aircraft task result state set; secondly, selecting an event tree (ET) method, and establishing an aircraft task process reliability reference model; thirdly, analyzing aircraft initial/middle task reliability characteristics, selecting a dynamic failure tree (DFT) method, a Bayesian network (BN) method, a Markov method and the like, and establishing an initial/middle task reliability characteristic model; fourthly, establishing an aircraft task reliability comprehensive model by compositing the initial/middle task reliability model. By means of the method, the dynamic characteristics in the aircraft complicated task process can be more accurately depicted, the influences of dynamic changes of aircraft system composition at different task stages in the aircraft task process on the aircraft task reliability are comprehensively reflected, and the established task reliability model can be more accurate.

Description

technical field [0001] The invention relates to a dynamic characteristic-based aircraft mission reliability modeling method, which belongs to the technical field of system reliability. Background technique [0002] At present, countries are competing to develop aircraft with multiple uses such as repeated use, long-term on-orbit stay, orbital space maneuvering, and on-orbit mission execution. This type of aircraft has complex structures and functions, many mission stages, and experiences various mission environments, and the mission reliability is affected by the above factors. Therefore, in the process of aircraft development and key mission planning, it is necessary to carry out analysis and evaluation of mission reliability in advance. The establishment of a reliability evaluation model that can fully reflect the characteristics of the aircraft mission process is the basis for the analysis and evaluation of the aircraft mission reliability. [0003] At present, the esta...

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Application Information

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IPC IPC(8): G06F17/50
Inventor 詹景坤李孝鹏周文明敖楠陈灿辉武杰吕天慧孙建朱红王骞陈洪波李福秋任立明王福忠彭小波
Owner CHINA ACAD OF LAUNCH VEHICLE TECH
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