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System dynamics and discrete event simulation hybrid simulation modeling method

A system dynamics, hybrid simulation technology, applied in the field of simulation modeling, can solve problems such as lack of global perspective, distinguishing different individuals, and difficult to reflect the differences between different entities.

Pending Publication Date: 2021-08-27
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

System dynamics supports a higher level of abstraction, can provide a global perspective for observing the system, and can explore the impact of system structure on system behavior, but system dynamics cannot distinguish different individuals based on the attributes of entities, and it is difficult to reflect the differences between different entities
Discrete event simulation is suitable for the middle and lower levels of abstraction, and can well represent the complexity of details and describe the differences between entities. However, discrete event simulation lacks a global perspective that can represent the dynamic interaction of system components, and is not suitable for solving problems with dynamic feedback characteristics. The problem

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  • System dynamics and discrete event simulation hybrid simulation modeling method
  • System dynamics and discrete event simulation hybrid simulation modeling method
  • System dynamics and discrete event simulation hybrid simulation modeling method

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Embodiment 1

[0065] The engine of the present invention supports hybrid simulation modeling of system dynamics and discrete event simulation. Embodiment 1 of the present invention provides a hybrid simulation modeling method of system dynamics and discrete event simulation. figure 2 It is a flow chart of a hybrid simulation modeling method of system dynamics and discrete event simulation in Embodiment 1 of the present invention, specifically including the following steps:

[0066] Step 101: Initialize the hybrid simulation model based on the simulation model parameters;

[0067] The optional hybrid simulation model initialization refers to the process of initializing the system dynamics sub-model of the hybrid simulation model, initializing the discrete event simulation sub-model of the hybrid simulation model, and constructing the future clock sequence of the hybrid simulation model. The hybrid simulation model is Refers to the hybrid simulation model of system dynamics and discrete even...

Embodiment 2

[0092] This embodiment is further expanded on the basis of the first embodiment above. The system dynamics and discrete event simulation hybrid simulation engine provided by this embodiment can be realized by software and / or hardware, and can be integrated in various general computer equipment and Web system, image 3 It is a structural schematic diagram of a system dynamics and discrete event simulation hybrid simulation modeling engine in Embodiment 2 of the present invention. The system dynamics and discrete event simulation hybrid simulation modeling engine includes: model building module S5, hybrid simulation calculation Module S6 and simulation result output module S7;

[0093] The model building module S5 is used to parse the XML file containing the simulation model parameter information before the simulation officially starts to execute, and instantiate the hybrid simulation model of system dynamics and discrete event simulation based on the simulation model parameters...

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Abstract

The invention belongs to the technical field of simulation modeling, and discloses a system dynamics and discrete event simulation hybrid simulation modeling method. The method comprises the steps of constructing a future clock sequence based on simulation time parameters, managing and maintaining the future clock sequence by using concepts of continuous phases and discrete phases, promoting simulation calculation of the continuous phases, performing data interaction of the continuous phases, judging and executing simulation calculation of the discrete phases,carrying out data interaction of the discrete phases, and constructinga system dynamics and discrete event simulation hybrid simulation modeling engine, wherein the engine comprises a model construction module; a hybrid simulation calculation module composed of hybrid simulation, system dynamics simulation and discrete event simulation; a simulation result output module. According to the invention, hybrid simulation modeling of system dynamics and discrete event simulation can be effectively supported, and a modeler can comprehensively evaluate problems from a macroscopic view and a microscopic view.

Description

technical field [0001] The invention relates to the technical field of simulation modeling, in particular to a hybrid simulation modeling method of system dynamics and discrete event simulation. Background technique [0002] In recent years, the development of hybrid simulation modeling technology has given birth to some simulation modeling tools that support multiple paradigms. However, there are relatively few existing software that support hybrid simulation modeling of system dynamics and discrete event simulation, and they are all commercial in nature. The existing software has limitations such as poor scalability and poor customizability, and the core simulation functions are not easy to migrate and integrate into third-party tools and systems. [0003] System dynamics is based on system thinking and system analysis. Based on the principles of causality, feedback and delay, all real systems are regarded as information feedback loops and interrelated continuous quantitie...

Claims

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Application Information

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IPC IPC(8): G06F30/20G06F119/12G06F119/14
CPCG06F30/20G06F2119/12G06F2119/14
Inventor 高赞张贺刘博涵荣国平邵栋
Owner NANJING UNIV