How can I set the solver to 'discrete', programmatically?

Question

Harish 2024-1-11

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https://ww2.mathworks.cn/matlabcentral/answers/2068861-how-can-i-set-the-solver-to-discrete-programmatically

回答： Hassaan 2024-1-11

采纳的回答： Hassaan

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Hi,

I want to use set_param() to set the solver-type to "Fixed-step" and solver to "discrete".

I could set the solver type by using:

myModel = 'model';
set_param(myModel, 'SolverType', 'Fixed-step')

but I receive an error with the following statement.

set_param(myModel, 'Solver', 'discrete');

The error says the following:

Invalid setting in block_diagram 'MultiplyAndAdd_harness' for parameter 'Solver'

Can anyone help me with this?

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Answer 1

Hassaan 2024-1-11

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https://ww2.mathworks.cn/matlabcentral/answers/2068861-how-can-i-set-the-solver-to-discrete-programmatically#answer_1387971

在 MATLAB Online 中打开

To set the solver type for a specific block to "Fixed-step," you are on the right track with the following code:

myModel = 'model';
set_param(myModel, 'SolverType', 'Fixed-step');

However, for discrete blocks, you typically don't need to specify a solver type as you would for continuous blocks. Instead, you define the sample time for the block.

If you want to set a sample time for a specific block to make it discrete, you can use the set_param function as follows:

myModel = 'model';
blockName = 'YourBlockName'; % Replace with the name of your block
sampleTime = '0.1'; % Replace with your desired sample time (e.g., '0.1' for a discrete block with a 0.1-second sample time)
set_param([myModel '/' blockName], 'SampleTime', sampleTime);

Replace 'YourBlockName' with the name of the block for which you want to set the sample time. This will configure the block as a discrete block with the specified sample time.

Please make sure that 'discrete' is a valid option for the specific block in your Simulink model and that you are using the correct block name in the set_param function.

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