companion simulnk model called, and resulting values returned in matlab

To call a Simulink model in MATLAB, you can use the sim command. This command allows you to simulate a Simulink model and obtain the resulting data. Here's an example:

main.m
% Load the Simulink model
model = 'mySimulinkModel';
load_system(model);

% Set simulation parameters
tspan = 0:0.1:10;  % Simulation time span
x0 = [0; 0];  % Initial state
u = 1;  % Input signal

% Simulate the model
simout = sim(model, 'SimulationMode', 'normal', 'StartTime', '0', 'StopTime', '10', 'FixedStep', '0.1', 'SaveOutput', 'on', 'OutputSaveName', 'yout');
y = simout.yout;

% Plot the results
plot(tspan, y);
xlabel('Time');
ylabel('Output');
title('Simulink Model Output');
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In this example, we load a Simulink model named mySimulinkModel. We set up simulation parameters including a time span (tspan) and initial state (x0). We then simulate the model using the sim command with specified simulation parameters. The resulting data is stored in the simout variable. We obtain the output signal (y) by accessing the yout field of the simout structure. Finally, we plot the output signal over time.

Note that the sim command can accept many different inputs and options to customize the simulation behavior. Consult the MATLAB documentation for more information.