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A Modeling Method of Mvb Network Process Data Communication Based on Maximal Algebra

A process data and modeling method technology, applied in data exchange network, data exchange through path configuration, bus network, etc., can solve the problems of complex process data communication modeling and network congestion.

Active Publication Date: 2020-05-19
CHANGCHUN UNIV OF TECH
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to solve the problem of complex modeling of existing process data communication and difficulty in determining whether the network is blocked. The mathematical model of bus-type open-loop MVB network process data communication is established by using maximum algebra, and by introducing periodic input control, analysis The controllability of the system, the periodic steady-state characteristics and the non-blocking condition of the system under the certain time parameters can effectively improve the reliability of the MVB network process data communication

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  • A Modeling Method of Mvb Network Process Data Communication Based on Maximal Algebra
  • A Modeling Method of Mvb Network Process Data Communication Based on Maximal Algebra
  • A Modeling Method of Mvb Network Process Data Communication Based on Maximal Algebra

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[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0025] The principle of the maximal algebraic method of the described MVB process data communication is that the MVB network adopts the master-slave working mode, and the bus manager (Bus Administrator, BA) of the MVB network master device regularly reads the main frame (F_code= 0~4) and broadcast it to the MVB bus, the address-related slave device (source) responds to the master frame, and reads the slave frame from the communication memory of the source device for transmission, and the addressed sink device receives the slave frame. , which is a basic communication process such as figure 1 shown. Maximal algebra is a special algebraic structure, set in defines a set of binary operations on:

[0026]

[0027] in + is an addition in the general sense, and the multiplication sign · is usually omitted. make Then D is called a maximal algebra, and ε ...

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Abstract

The invention provides an MVB network process data communication modeling method based on a maximum algebra. An MVB network process data communication model conforming to the IEC standard is established by using a maximum algebra method; and by introducing periodic input control, when calculation shows that the time interval of reading a main frame by BA is not less than the maximum value in a process data time matrix, no blocking occurs in the process data communication process. A simulation test result shows that, under the circumstances that the above conditions are satisfied, there is no blocking in the data communication process of an MVB process, so that the reliability of the data communication of the MVB process is ensured.

Description

technical field [0001] The invention relates to an MVB network process data communication modeling method, in particular to an MVB network process data communication modeling method based on maximal algebra. The method establishes a process data communication data model by analyzing the dynamic behavior of the MVB network process data. And introduce periodic input control, analyze the relationship between MVB network process data sending interval and transmission time matrix and MVB network system non-blocking, effectively improve the reliability of MVB network process data communication. Background technique [0002] The MVB bus is mainly used in the train communication network. The MVB process variables reflect the train state, speed, acceleration, motor current, operator commands, etc. The value of the process variable is the process data (Process Data), and the transmission time of the process data must be short and determined , so the process data is sent periodically,...

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Application Information

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IPC IPC(8): H04L12/24H04L12/40
CPCH04L12/40H04L41/145H04L2012/40293
Inventor 胡黄水赵思远柳虹亮
Owner CHANGCHUN UNIV OF TECH
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