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Complex electromechanical system reliability modeling method based on probability behavior tree

A technology of electromechanical systems and modeling methods, applied in probabilistic CAD, stochastic CAD, electrical digital data processing, etc., to achieve the effects of easy maintenance, good hierarchical characteristics, and reliability evaluation

Active Publication Date: 2018-08-10
XI AN JIAOTONG UNIV
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  • Application Information

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Problems solved by technology

[0005] At present, probabilistic behavior trees are mainly used in interactive process modeling and formal verification in the fields of computer software and hardware, communication protocols, and process control. Due to the complexity of states and transitions during the operation of complex electromechanical systems, complex electromechanical System reliability modeling has not been reported

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  • Complex electromechanical system reliability modeling method based on probability behavior tree
  • Complex electromechanical system reliability modeling method based on probability behavior tree
  • Complex electromechanical system reliability modeling method based on probability behavior tree

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Embodiment Construction

[0033] The present invention will be described in detail below, which is an explanation rather than a limitation of the present invention.

[0034] see figure 1 As shown, the present invention is based on a probabilistic behavior tree reliability modeling method for complex electromechanical systems, comprising the following steps:

[0035] 1) Combining the function execution logic of the complex electromechanical system and the level of the analyzed problem, determine the constituent units of the system and their state transitions;

[0036] The functional substructure of electromechanical systems is hierarchical and can be decomposed layer by layer. According to the electromechanical system behavior of concern, the system is decomposed into the agreed functional level, and the corresponding component units and their state transitions are determined, including the state transition of the unit when it is normal and the state transition under failure conditions.

[0037] For e...

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Abstract

The invention discloses a complex electromechanical system reliability modeling method based on a probability behavior tree. The method comprises the following steps that: 1) combining the function execution logic of a complex electromechanical system with the hierarchy of an analyzed problem to determine the composition unit and the state transition of the system; 2) for each composition unit ofthe electromechanical system, establishing the sub-behavior tree model of each composition unit; and 3) utilizing a synchronous event expressed by an input / output node in the behavior tree model to link the sub-behavior tree model of each unit, and forming a complex electromechanical system reliability model based on the probability behavior tree. By use of the method, the state transition in a complex electromechanical system behavior process can be visually and clearly expressed, a modeling process has good hierarchical characteristics and can be easily maintained, and the method is especially suitable for the complex electromechanical system reliability modeling. On the basis of the model, a probability model detection tool can be used for automatically calculating a reliability index,and the efficiency and the accuracy of the complex electromechanical system reliability evaluation can be improved.

Description

technical field [0001] The invention belongs to the field of engineering reliability analysis of electromechanical systems, and relates to a reliability modeling method of complex electromechanical systems based on probability behavior trees. Background technique [0002] Due to the increasingly complex function and behavioral logic of the electromechanical system, the failure of the system unit will often cause the electromechanical system to produce wrong behavioral logic and then malfunction, which will affect the reliability of the system. Therefore, in the design process of complex electromechanical systems, it becomes an important link in the design process of complex electromechanical systems to evaluate the reliability of the designed system comprehensively and systematically. [0003] Traditional electromechanical system reliability modeling (reliability block diagram, fault tree, etc.) is informal, and the causal and logical relationships between electromechanical ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20G06F2111/08
Inventor 杨培林侯翌
Owner XI AN JIAOTONG UNIV
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