Digital network control system modeling method
A network control system and modeling method technology, applied in the field of integrated modeling of digital network control system performance and reliability, can solve problems such as low design efficiency, unguaranteed performance, low reliability, etc., to achieve perfect design, Satisfy the control requirements and meet the effect of reliability and rapid design
Active Publication Date: 2021-12-07
NO 719 RES INST CHINA SHIPBUILDING IND
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[0005] In order to solve the above problems, the present invention proposes a modeling method of a digital network control system. According to the requirements of the control system, through the design of the nodes and links of the digital network control system, the perfection and verification of the modeling method are completed, and a set of control system performance is formed. and reliability modeling methods to support the development of high-performance digital network control systems, and at the same time solve the problems of low design efficiency, low reliability, and unguaranteed performance caused by the isolation of performance and reliability design
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[0029] Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with some of the aspects of the invention as detailed in scope as outlined in the appended claims.
[0030] The integrated design of performance and reliability is a new research field in reliability engineering in recent years, and there are many different methods for different design objects. The research is still in the exploratory stage, and a complete theoretical system has not yet been formed. Since the performance parameters do not directly affect the relia...
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The invention discloses a digital network control system modeling method, which is characterized by comprising the following steps: establishing performance index parameters of a digital network control system; obtaining functions and state space expressions corresponding to the performance index parameters, and performing discretization of variable sampling; obtaining a performance evaluation function of a function corresponding to the performance index parameter, and performing discretization processing; carrying out weighted average to obtain a weight coefficient of a control loop, and obtaining a digital network control system performance model; establishing a system reliability model; obtaining the network reliability according to the requirement of the network communication reliability and the network fault criterion corresponding to each state; determining a function relationship between system performance and system internal and external cause sets through a control model of the system, determining a relationship between a system parameter set and reliability and obtaining a performance and reliability integrated model. Therefore, iterative optimization of the digital network control system is realized, and the design of the digital network control system is perfected.
Description
technical field [0001] The invention belongs to the field of digital network control evaluation, in particular to an integrated modeling method for the performance and reliability of a digital network control system, which ensures the performance and reliability of the digital network control system. Background technique [0002] The digital network control system refers to the control system based on the data network, which is characterized in that the commands and feedback of the control system are transmitted in the network through the data communication network. A typical digital control system includes a sensing unit, a calculation / control unit, an execution unit, and a network unit. The sensing unit is used to monitor and obtain data information; the calculation / control unit is used to make decisions and provide commands; the execution unit is used to execute control commands ; Network elements are used for information exchange. [0003] With the continuous advancemen...
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IPC IPC(8): G05B13/04
CPCG05B13/042Y02P90/02
Inventor陶模柯志武郑伟李献领冯毅姚涌涛王晨阳汪伟周宏宽林原胜邱志强熊卿邹海吴君
OwnerNO 719 RES INST CHINA SHIPBUILDING IND