Modelica-based model splitting method and device and storage medium

A model and sub-model technology, applied in the field of system simulation, can solve problems such as failing to meet HIL test conditions, loss of model simulation accuracy, and loss of processing meaning, and achieve the effect of reducing single-step solution time and ensuring accuracy

Active Publication Date: 2022-01-28
CHINA AUTOMOTIVE TECH & RES CENT +1
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Problems solved by technology

The disadvantage is that it will cause serious loss to the simulation accuracy of the model, especially for the complex thermal fluid system

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  • Modelica-based model splitting method and device and storage medium
  • Modelica-based model splitting method and device and storage medium
  • Modelica-based model splitting method and device and storage medium

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Embodiment Construction

[0026] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0027] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the refe...

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Abstract

The embodiment of the invention discloses a Modelica-based model splitting method and device and a medium, and relates to the technical field of system simulation. The method comprises the following steps: acquiring a physical ontology model of a thermal fluid system constructed through Modelica software; performing a semi-physical simulation test on the physical ontology model through a simulation machine, and splitting the physical ontology model from a fluid physical interface to obtain at least two sub-models if the single-step solution time of the physical ontology model is greater than the physical interaction time of the machine; respectively allocating different computing resources in the simulation machine to the at least two sub-models, and respectively operating the at least two sub-models through the different computing resources; and performing data interaction between the at least two sub-models through the simulation machine according to the machine physical interaction time so as to ensure the precision to the maximum extent while realizing real-time simulation.

Description

technical field [0001] Embodiments of the present invention relate to system simulation technology, and in particular to a Modelica-based model splitting method, device and storage medium. Background technique [0002] The Hardware-in-the-Loop (HIL) test used in the research and development of the engineering field has very high requirements for the calculation accuracy and efficiency of the simulation model, especially for complex thermal fluid systems, such as highly integrated automobiles, aviation , aerospace, weapons, and ship systems, the real-time thermal fluid system often has problems such as timeout and large step calculation divergence. The main reason is that the fluid is a slow response system, and a large time step needs to be set in the actual solution. ms level, and the numerical solution of the simulation model is usually easy to diverge under large time steps. It is necessary to have a good understanding of the actual physical working process and parameter ...

Claims

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Application Information

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IPC IPC(8): G06F30/20G06F113/08G06F119/08
CPCG06F30/20G06F2119/08G06F2113/08
Inventor 金薄何绍清张彤辉
Owner CHINA AUTOMOTIVE TECH & RES CENT
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