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A Reliability Modeling Method for Complex Electromechanical Systems Based on Petri Nets

A technology of electromechanical systems and modeling methods, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as high real-time requirements, different service times, and inability to fully reflect system functions, to avoid ambiguity Sex, the effect of clear service time

Inactive Publication Date: 2017-06-27
XI AN JIAOTONG UNIV
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Problems solved by technology

[0003] 2. When modeling the reliability of a complex electromechanical system, the timing and logic relationship between the states of each component is complex, the service time is different, and the real-time requirements are relatively high. These have caused great impact on the establishment and modification of the model. Difficulties
[0006] 1) The traditional Petri net modeling method only establishes the Petri net model of the reliability logic of the electromechanical system, which cannot represent the dynamic operation process of the entire system and the service time of each component of the system, so it cannot correctly describe the failure time of each component of the system
[0007] 2) The traditional Petri net modeling method can only describe the transmission of faults among the various components of the electromechanical system, and cannot fully reflect the functions realized by the operation process of the system

Method used

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  • A Reliability Modeling Method for Complex Electromechanical Systems Based on Petri Nets
  • A Reliability Modeling Method for Complex Electromechanical Systems Based on Petri Nets
  • A Reliability Modeling Method for Complex Electromechanical Systems Based on Petri Nets

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Embodiment Construction

[0027] The present invention will be described in detail below, which is an explanation rather than a limitation of the present invention.

[0028] like image 3 As shown, the flow of the modeling method provided by the present invention is: analyze the time sequence relationship of the state changes of each component in the operation process of the complex electromechanical system, and establish the operation process of the complex electromechanical system according to the order of the state changes of the components in the operation process of the complex electromechanical system In the Petri net model, the state of each component of the system is represented by a place, the normal working process of each component of the system is described by a deterministic time transition, and the start-up process of each component of the system is described by an instantaneous transition. On the basis of the Petri net model of the operation process of the complex electromechanical syste...

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Abstract

The invention discloses a reliability modeling method of a complex electromechanical system based on Petri nets. Firstly, according to the time sequence relationship of each component state change in the operation process of the complex electromechanical system, a Petri net model of the operation process of the complex electromechanical system is established; Based on the Petri net model of the system operation process, the fault information of each component is added, and the Petri net model of the complex electromechanical system operation process including fault information is established, that is, the reliability modeling of the complex electromechanical system based on Petri net is completed. Using the method provided by the present invention to carry out reliability modeling of complex electromechanical systems can completely express the dynamic operation process of complex electromechanical systems in real time, clarify the service time of each component of the system, avoid ambiguity, and effectively model complex electromechanical systems Perform modeling analysis.

Description

technical field [0001] The invention belongs to the field of system engineering reliability analysis, and relates to a reliability modeling method of complex electromechanical systems based on Petri nets. Background technique [0002] 1. With the development of mechatronics technology, the integration and complexity of complex electromechanical systems (products) are getting higher and higher, and the resulting system reliability problems are becoming more and more prominent. Reliability has become a measure of the performance of complex electromechanical systems. One of the important indicators. [0003] 2. When modeling the reliability of complex electromechanical systems, the timing and logic relationship between the states of each component is complex, the service time is different, and the real-time requirements are relatively high. These have caused great impact on the establishment and modification of the model. Difficulties. It is difficult to model the reliability...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 杨培林薛冲冲徐凯
Owner XI AN JIAOTONG UNIV
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