How to extract and input arrays from simscape to plot them

In short if i have simple model like this mass-spring system and i want to input an array of spring constant values in the spring constant block and see how the maximum distance change and graph that relation in order to determine something.

Of course thats just for illustration purposes my model on simscape is more complicated than that but i want to know how can i even begin doing something like this, to input an array of values into a simscape block and simulate as many times as array dimension without doing it manually.

I Already know how to extract the data from a signal using to workspace block but this specific task i cant figure it out.

[Dheeraj]

Hi Ahmed,

I understand you want to simulate a Simscape model with varying block parameters and analyze how these changes affect the outputs in the system.

To achieve this, you can automate parameter sweeps where you systematically change the block parameter values across multiple simulation runs. When you sweep one or more parameters, you change their values between simulation runs, and compare and analyze the output signal data from each run.

You can follow the below steps to achieve the same,

1. Locate the specific block in your Simscape model where the block parameter value is defined as a parameter. Ensure this parameter is set as MATLAB variable.
2. Set up parameter sweep by creating a MATLAB script that defines an array of parameter values and executes the simulation for each value. Below is an example MATLAB script for your reference model archeticture.

% Define array of spring constant values
spring_constants = [1, 2, 3, 4, 5];  % Example values
% Loop through each spring constant value
for i = 1:length(spring_constants)
    % Set the spring constant parameter in the model let us assume the
    % variable to be 'k'
    k = spring_constants(i);  % Assign current spring constant value
    simOut = sim('YourSimscapeModel');  % Simulate the model
    
    % Extract and analyze results (for example, maximum distance)
    max_distance(i) = simOut.max_distance;  % Assuming 'max_distance' is the output you seek to analyze
end
% Plot results
figure;
plot(spring_constants, max_distance, '-o');
xlabel('Spring Constant');
ylabel('Maximum Distance');
title('Maximum Distance Analysis');
grid on;

By following these steps, you can automate the process of varying parameters in your Simscape model and analyzing the effects on outputs such as maximum distance.

To know more about Parameter sweeping you could refer to the below MATLAB's documentation.

https://www.mathworks.com/help/simulink/ug/optimize-estimate-and-sweep-block-parameter-values.html