Electromechanical fluid modeling and co-simulation solutions
Overview
In the traditional R&D process of products, physical prototypes are often used to verify product functions and performances. The development cycle is long, the cost is high, and the cost of repairing product defects is very high. In some existing simulations, there are also problems in how to perform co-simulation between different modeling softwares and how to protect the intellectual property of subsystems while system-level co-simulation, and reduce the difficulty of coordination between departments.
Based on Dymola FMU electromechanical fluid modeling and co-simulation, Hengrun Technology uses a digital model to simulate and analyze the function and performance of the system, so as to verify and optimize the solution in the early design stage of the product, and reduce the number of iterations in product development. . The solution is compatible with most system modeling software, and can effectively protect the intellectual property of each subsystem to ensure the smooth design of product collaboration.
Overall plan
• The overall department builds a system architecture model in Dymola, defines the input and output relationships between subsystems and the interface relationships between subsystems. After verifying the system functions through simulation, each subsystem is packaged as an FMU. Sub-system indicators, interface definitions, corresponding FMU models and modeling specifications, model packaging specifications, model test specifications, etc. are sent to the subsystems;
• The sub-system department establishes electrical, environmental control, engine, dynamics, control and other system models based on Dymola, PROOSIS, SIMPACK, Simulink and other software for each professional feature. After testing, the model is packaged as FMU and submitted according to the overall department requirements. Give the overall department and submit materials such as model test reports at the same time;
• The overall department will load the FMU models provided by each subsystem department into the Dymola system simulation platform, and replace the subsystem models in the architecture model one by one, and verify, select and optimize the system solutions through joint simulation.
Features and advantages
• Realize the synergy between the overall department and the sub-system department, and the synergy between the factories. In the early stage of product design, the system solution can be verified and optimized in detail based on co-simulation, reducing iterations in the design and shortening the development cycle. Reduce research and development costs;
• Each sub-system uses professional software to model, improve the efficiency of modeling and solution, and make the model meet the requirements of precision and real-time at the same time;
• The Dymola platform provides an efficient and stable solver for the nonlinearity, strong coupling and rigidity of mathematical models, ensuring the smooth implementation of the dynamic characteristics of complex electro-hydraulic systems;
• The Dymola platform provides comprehensive support for FMU2.0, including import and export of ModelExchange and Co-Simulation formats, which provides sufficient support for co-simulation flexibility and efficiency of complex systems;
• The sub-system model is submitted in the form of FMU black box model, which satisfies the overall department system simulation requirements, and protects the intellectual property of the sub-system, so that the coordination between departments and factories is smoother.
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