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Layering aviation operation system HM/FM (health monitoring/fault management) modeling and evaluating method based on stochastic Petri net

A technology of operating system and evaluation method, applied in the field of performance evaluation of aviation operating system

Active Publication Date: 2012-07-18
TSINGHUA UNIV
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Problems solved by technology

At present, there is no quantitative analysis of HM / FM for the layered avionics operating system

Method used

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  • Layering aviation operation system HM/FM (health monitoring/fault management) modeling and evaluating method based on stochastic Petri net
  • Layering aviation operation system HM/FM (health monitoring/fault management) modeling and evaluating method based on stochastic Petri net
  • Layering aviation operation system HM/FM (health monitoring/fault management) modeling and evaluating method based on stochastic Petri net

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Embodiment Construction

[0042] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0043] (1), such as figure 1 As shown, the logical model of the actual system is established, and there is an HM model and FM model in each layer;

[0044] (2), confirm the communication method between layers and the call relationship between HM / FM, and clarify the mechanism adopted by the target system, such as figure 2 shown. figure 2 -a is a mechanism without lower layer polling, which is the simplest mechanism; figure 2 -b is the polling of the lower layer, and the mechanism of calling the FM of this layer after a fault is found; this mechanism consumes a lot of resources, but can obtain better system reliability; figure 2 -c is the lower-layer polling mechanism that calls the lower-layer FM after a fault is found, and its performance and system overhead are between the first two mechanisms;

[0045] (3), according to the logical m...

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Abstract

A layering aviation operation system HM / FM (health monitoring / fault management) modeling an evaluating method based on a stochastic Petri net comprises the following steps: firstly, establishing a stochastic Petri net model of all components, including a monitored object model, an HM model and an FM model, and secondly, combining the models to construct a complete stochastic Petri net model; thensimplifying and solving the complete stochastic Petri net to obtain the stability probability distribution of separated Petri sub models and the stability probability distribution of compressed Petrisub models; and finally analyzing and evaluating the models. According to the method, the sub models of the components of the system are established and can be combined flexibly according the structure of the practical system to obtain the complete model of the system, namely flexibility, the models are subjected to approximation analysis, a large-scale practical system can be processed, namely the solving of a complicated model.

Description

technical field [0001] The invention belongs to the technical field of aviation operating system performance evaluation, and relates to a layered aviation operating system HM / FM modeling and evaluation method based on stochastic Petri net. Background technique [0002] Integrated Avionics (IMA) is the current development trend of airborne equipment. It can effectively reduce the life cycle cost (LLC), improve the performance of airborne equipment, and facilitate the update and maintenance of hardware and software equipment. Compared with the combined avionics, a prominent feature of the integrated avionics is the function "software", that is, the use of software to realize the functions of the original special hardware on the general hardware platform. [0003] The health monitoring / fault management (HM / FM) function in the integrated avionics is used to ensure that the system can still operate normally in the event of a software failure. The health monitoring module is resp...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 林闯万剑雄向旭东孔祥震李建祥白晓颖
Owner TSINGHUA UNIV
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