Speed control with PID in Simulink - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to set the proportional gain of the PID controller.

Simulink

pid_controller.Kp = [1];

Drag options to blanks, or click blank then click option'

A5

B0.8

C1.5

D10

Attempts:

3 left

💡 Hint

Common Mistakes

Using a very high Kp can cause the system to oscillate.

Setting Kp to zero means no proportional control.

The proportional gain (Kp) controls how strongly the controller reacts to the current speed error. Setting it to 0.8 provides a balanced response.

2fill in blank

medium

Complete the code to set the integral gain of the PID controller.

Simulink

pid_controller.Ki = [1];

Drag options to blanks, or click blank then click option'

A0.1

B2

C0

D5

Attempts:

3 left

💡 Hint

Common Mistakes

Setting Ki too high can cause overshoot and oscillations.

Setting Ki to zero disables integral action.

The integral gain (Ki) helps eliminate steady-state error by accumulating past errors. A small value like 0.1 is typical to avoid instability.

3fill in blank

hard

Fix the error in setting the derivative gain of the PID controller.

Simulink

pid_controller.Kd = [1];

Drag options to blanks, or click blank then click option'

A0.05

B-0.1

C1

D0

Attempts:

3 left

💡 Hint

Common Mistakes

Using a negative derivative gain causes the system to become unstable.

Setting Kd too high amplifies noise.

The derivative gain (Kd) predicts future error and smooths the response. It should be a small positive number like 0.05. Negative values cause instability.

4fill in blank

hard

Fill both blanks to create a dictionary of PID gains and check if the proportional gain is greater than 1.

Simulink

pid_gains = {'P': [1], 'I': [2]
if pid_gains['P'] [3] 1:
    print('High proportional gain')

Drag options to blanks, or click blank then click option'

A0.9

B>

C0.1

D<

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong comparison operator like '<' instead of '>'.

Mixing up the gain values in the dictionary.

The dictionary stores the proportional and integral gains. The condition checks if the proportional gain is greater than 1 to print a warning.

5fill in blank

hard

Fill all three blanks to create a dictionary comprehension that maps each gain name to its value if the value is greater than zero.

Simulink

filtered_gains = {name: value for name, value in pid_gains.items() if value [1] 0 and name != [2] and name != [3]

Drag options to blanks, or click blank then click option'

A>

B'D'

C'I'

D'P'

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong comparison operators like '<'.

Forgetting to exclude the correct gain names.

This dictionary comprehension filters gains with positive values and excludes derivative ('D') and integral ('I') gains from the result.