Proportional Integral Derivative Controller
1. What is a PID Controller ?
PID controller is a closed loop feed back control ststem with three parameter-Proportional, Integral and Derivative.
2. What these P, I and D term means ?
Proportional(P) eliminates the current error.
Integral(I) eliminates long term error tendency.
Derivative(D) anticipates future trend of error with the help of rate of change of error.
3. What is the difference between PID controller and PI controller?
In a PI controller, there is no derivative component. A PI controller can provide stable control but may not response quickly.
4. What are the gain factor of PID controller ?
Kp – Proportional gain
Ki – Integral gain
Kd – Derivative gain
5. What is gain factor ?
gain factor is basically a relationship (ratio mostly) between the magnitude of the input and magnitude of the output.
Proportional Integral Derivative Controller in Control System
A proportional Integral Derivative controller also called a PID controller, is a widely used feedback control mechanism in industrial automation. It aims to regulate a process variable by adjusting a manipulated variable based on the error between the set point and the actual process variable.
Table of Content
- What is a Proportional Integral Derivative Controller?
- Mathematical Expression of PID Controller
- Block Diagram of PID controller
- Working of PID controller
- Tuning of PID controller
- Advantages and Disadvantages of PID controller