A Reliability Modeling Method for Complex Electromechanical Systems Based on Probabilistic Behavior Trees

An electromechanical system, reliability technology, applied in the direction of probabilistic CAD, stochastic CAD, design optimization/simulation, etc., to achieve the effect of easy maintenance, good level characteristics, and reliability evaluation

Active Publication Date: 2021-10-08
XI AN JIAOTONG UNIV
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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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  • A Reliability Modeling Method for Complex Electromechanical Systems Based on Probabilistic Behavior Trees
  • A Reliability Modeling Method for Complex Electromechanical Systems Based on Probabilistic Behavior Trees
  • A Reliability Modeling Method for Complex Electromechanical Systems Based on Probabilistic Behavior Trees

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[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 reliability modeling method of a complex electromechanical system based on a probabilistic behavior tree, which includes the following steps: 1) Combining the function execution logic of the complex electromechanical system and the level of the analyzed problem, determining the constituent units of the system and their state transitions; 2) For each component unit of the electromechanical system, establish its sub-behavior tree model; 3) Use the synchronous events represented by the input and output nodes in the behavior tree model to connect the sub-behavior tree models of each unit to form a complex model based on probabilistic behavior tree Reliability Modeling of Electromechanical Systems. The invention can intuitively and clearly express the state transition in the behavior process of the complex electromechanical system, the modeling process has good hierarchical characteristics and is easy to maintain, and is especially suitable for the reliability modeling of the complex electromechanical system. Based on this model, the reliability index can be automatically calculated by using the probabilistic model detection tool, which improves the efficiency and accuracy of reliability evaluation of complex electromechanical systems.

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 Patents(China)
IPC IPC(8): G06F30/20G06F111/08
CPCG06F30/20G06F2111/08
Inventor 杨培林侯翌
Owner XI AN JIAOTONG UNIV
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