How can I implement a PID controller in MATLAB and Simulink?

John Williams answered . 2025-07-17 16:40:43

To implement a PID controller in MATLAB:

Using MATLAB Code:

1. Define your system transfer function:

    

    

   s = tf('s'); G = 1 / (s + 2); % Example plant

2. Create the PID controller:

    

   Kp = 2; Ki = 1; Kd = 0.5; C = pid(Kp, Ki, Kd);

3. Connect controller and plant:

    

   T = feedback(C * G, 1); % Closed-loop system

4. Plot step response:

    

   step(T); title('Step Response with PID Controller');

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Using Simulink:

1. Open Simulink → New Model

2. Add blocks: Step Input, PID Controller, Transfer Function, Scope

3. Set parameters in PID block (Kp, Ki, Kd)

4. Run the simulation and observe results in the Scope

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