Question

What are the advantages and disadvantages of the PI controller, PD controller and PID controller ?

PLEASE DO IT IN A COMPUTER

ADVANCED DYNAMICS AND CONTROL SYSTEMS

Answer 1

Advantages of the PI controller

- Offset is not seen as in P controllers.
- PI controller is used for reducing the steady state error thus helps in achieving steady state conditions.
- This controller can be used when the speed of the controller is not a critical parameter.

Disadvantages of the PI controller

- The speed of the response and overall stability of the system is lower.
- Set point overshoot is another drawback of this type of controller.
- Expensive and moderately complex

Advantages of the PD controller

- Responses of the system can be predicted thus error handling can be simplified.
- It can be used to increase the response time of an over damped system. So, fast-response systems with a large transmission coefficient can be built using it.

Disadvantages of the PD controller

- The system can experience operational offsets which needs adjustments.
- Overshoot threshold of the system increases drastically.

Advantages of the PID controller

- PID is used to achieve transient response of the system with better temperature control and better reaction times to disturbances.
- low noise levels of the measuring channel can be achieved.
- Offset is not seen as in P controllers.
- Unnecessary vibratrions and overshoot are minimal.

Disadvantages of the PID controller

- The overall performance of the system can come down due to large time delays
- It cannot be used for systems with slow disturbances

- Expensive and highly complex