In the traditional R&D process of military products, physical prototypes are often used to verify product functions and performance. 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 such as how to carry out co-simulation between different modeling software, that is, how to protect the intellectual property rights of sub-systems and reduce the difficulty of inter-departmental collaboration while co-simulating at the system level.
Based on Dymola+ FMU's electromechanical-hydraulic modeling and co-simulation, Runke General uses digital models to simulate and analyze the function and performance of the system, so as to verify and optimize the scheme 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 rights of each sub-system to ensure the smooth progress of product co-design.
solution
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● The general department builds the system architecture model in Dymola, defines the input-output relationship of subsystems and the interface relationship between subsystems, and after verifying the system function through simulation, encapsulates each subsystem as FMU. Distribute subsystem indicators, interface definitions, corresponding FMU models and modeling specifications, model packaging specifications, model testing specifications, etc. to the sub-system department
● The sub-system department establishes electrical, environmental control, engine, dynamics, control and other system models based on Dymola, PROOSIS, SIMPACK, Simulink and other software according to the characteristics of each specialty. After testing, the models are packaged as FMU and submitted according to the overall department requirements To the general department, and submit the model test report and other materials at the same time
● The overall department will load the FMU models provided by each sub-system 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 scheme through co-simulation.
Features and Benefits
● It has realized the collaboration between the overall department and the sub-system department, and the collaboration between the factories. In the early stage of product design, the system scheme can be verified and optimized in detail based on co-simulation, reducing the iteration in the design and shortening the research and development cycle. Reduce R&D costs
● Each sub-system uses professional software for modeling to improve the efficiency of modeling and solution, so that the model can meet the requirements of accuracy and real-time performance at the same time
● Dymola platform provides an efficient and stable solver for the nonlinear, strong coupling, rigidity and other characteristics of mathematical models, ensuring the smooth progress of solving the dynamic characteristics of complex electromechanical-hydraulic systems
● The Dymola platform provides comprehensive support for FMU2.0, including import and export of ModelExchange and Co-Simulation formats, providing sufficient support for the flexibility and efficiency of co-simulation of complex systems
● Sub-system model is submitted in the form of FMU black box model, which not only meets the needs of overall departmental system simulation, but also protects the intellectual property rights of the sub-system, making the collaboration between departments and factories more smooth
Applications
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