Simulink Fixed Step Size Discrete Compiler - two different step sizes in .cpp file?

Question

B. J. 2011-7-13

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/11566-simulink-fixed-step-size-discrete-compiler-two-different-step-sizes-in-cpp-file

Hi Everyone,

When I generate my code from the Simulink Coder (2011a), in my .cpp file I get

 /* Model step function for TID0 */
 void TEST_step0(void) /* Sample time: [0.04s, 0.0s] */
 {
   /* (no output/update code required) */
 }
 
 /* Model step function for TID1 */
 void TEST_step1(void) /* Sample time: [1.0s, 0.0s] */

I want the step size to always be 0.04s...I set the solver to this value, and I'm not sure why it is giving me a second sample size.

thanks, B.

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Answer 1

Kaustubha Govind 2011-7-13

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https://ww2.mathworks.cn/matlabcentral/answers/11566-simulink-fixed-step-size-discrete-compiler-two-different-step-sizes-in-cpp-file#answer_15774

You probably have blocks in your model that have a sample time of 1s (blocks in a model with a fixed-step solver can have a sample-time that is a multiple of the solver step-size). Look at the sample-time colors in your model to find the blocks and assign them to have a sample-time of 0.04s.