Information about PID controllers

Question 1

What are the disadvantages of using a P controller

2 key points

Answer 1

1. Steady-state error remains
2. cannot correct all errors

Question 2

What are the advantages of using a P controller?

3 key points

Answer 2

1. Simple
2. Fast
3. Easy to tune

Question 3

When should a P controller be used?

Answer 3

When speed is the biggest priority

Question 4

What are the advantages of a PI controller?

2 key points

Answer 4

1. eliminates steady-state error
2. good for slow processes

Question 5

What are the disadvantages of a PI controller?

2 key points

Answer 5

1. Slower than P controllers
2. More complex to tune (2 parameters)

Question 6

When should you use a PI controller?

Answer 6

Systems that require steady-state accuracy like temperature control

Question 7

What are the advantages of a PID controller?

4 key points

Answer 7

1. fast responses
2. eliminates steady-state error
3. reduces overshoot
4. reduces oscilations

best of the P and PI controllers + reducing overshoot and oscilations

Question 8

What are the disadvantages of a PID controller?

2 key points

Answer 8

1. most complex to tune (3 parameters)
2. can lead to instability if tuned incorrectly

Question 9

When should a PID controller be used?

Answer 9

high performance systems requiring stability like motion control systems