Simulink仿真参数动态调节

Question

鑫王 2023-11-30

回答： Harimurali 2023-12-10

应用场景：需要从matlab反复启动Simulink并进行仿真，每次仅修改整个系统中的一个模块的部分参数，但每次修改后重新仿真时，均会有编译Simulink模型过程，这个过程会消耗较多时间，请问有没有什么技术手段可以减少启动仿真时编译模型时间

Answer 1

Harimurali 2023-12-10

Hi 鑫王,

由于我的母语不是中文，所以我会尝试用英语回答这个问题。感谢您的理解。

I understand that you want to prevent the model from recompiling each time you modify the parameters of some module.

To reduce the compilation time of a Simulink model when starting simulation, you can consider the following methods:

Fast Restart: Simulink provides a feature called "Fast Restart" that allows you to make changes to a model and then restart the simulation without recompiling the entire model. Refer the following documentation for more information on Fast Restart and how to enable it in Simulink: https://www.mathworks.com/help/releases/R2023b/simulink/ug/fast-restart-workflow.html
"set_param" function: Simulation time can be reduced by using the "set_param" function to modify simulation parameters and simulate the model. By using "set_param", you avoid the overhead of re-initializing the model and recompiling the generated code. Also, model and its associated data may be cached in memory, reducing the overhead of loading. Here is an example code that shows how to use the "set_param" function:

set_param("path\to\the\block", parameter, value);

set_param('model_name',"SimulationCommand","start");

Refer the following documentation for more information about the "set_param" function:

Model Reference: Break down your Simulink model into referenced models. This way, when you modify a specific module, you only need to recompile and simulate the referenced model, rather than the entire system. This can significantly reduce compilation time. Refer the following documentation for more information about using model reference in Simulink: https://www.mathworks.com/help/releases/R2023b/simulink/ug/overview-of-model-referencing-1.html

Hope this helps.