Load disturbance response in Simulink - Mini Project: Build & Apply

Load Disturbance Response in Simulink

📖 Scenario: You are working as a control engineer. You want to see how a system reacts when a sudden load disturbance happens. This helps you understand if your controller keeps the system stable.

🎯 Goal: Build a simple Simulink model that shows the system's response to a load disturbance. You will add the disturbance, configure the model, run the simulation, and see the output graph.

📋 What You'll Learn

Create a Simulink model with a plant and a load disturbance input

Add a step block to represent the load disturbance

Configure simulation time to 10 seconds

Run the simulation and plot the output response

💡 Why This Matters

🌍 Real World

Load disturbances happen in many machines and processes. Understanding how systems respond helps engineers design better controllers to keep things stable and safe.

💼 Career

Control engineers and data scientists working with industrial systems use load disturbance response analysis to improve system reliability and performance.

1

Create the basic Simulink model

Open Simulink and create a new model. Add a Transfer Function block named plant with numerator [1] and denominator [1 10 20]. Add a Step block named load_disturbance with step time 5, initial value 0, and final value 1. Connect the Step block to the input of the Transfer Function block.

Simulink

% Open Simulink and create a new model
% Add a Transfer Function block named plant with numerator [1] and denominator [1 10 20]
% Add a Step block named load_disturbance with step time 5, initial value 0, final value 1
% Connect Step block to Transfer Function block input
% Your code here

Hint

Use add_block to add blocks and set_param to set their parameters. Connect blocks with add_line.

2

Configure simulation time

Set the simulation stop time of the model LoadDisturbanceModel to 10 seconds.

Simulink

% Set simulation stop time to 10 seconds
% Your code here

Hint

Use set_param on the model name to set the StopTime.

3

Run the simulation

Run the simulation of the model LoadDisturbanceModel and save the output in a variable called simOut.

Simulink

% Run the simulation and save output to simOut
% Your code here

Hint

Use the sim function with the model name and assign the result to simOut.

4

Plot the output response

Plot the output signal of the simulation stored in simOut. Use simOut.get('yout').signals.values for the output values and simOut.get('tout') for the time vector.

Simulink

% Plot the output response from simOut
% Your code here

Hint

Use plot with time and output values. Add title, xlabel, and ylabel for clarity.