Which controller has least maximum deviation?

Q. Which of the following controllers has the least maximum deviation?

1. P-controller
2. P-I controller
3. P-I-D controller
4. P-D controller

Answer: P-D Controller

P-D (Proportional Derivative) controller has the least maximum deviation

There are a number of different standard types of control systems that have been studied extensively. These controllers, specifically the P, PD, PI, and PID controllers are very common in the production of physical systems.

The proportional derivative controller produces an output, which is the combination of the outputs of proportional and derivative controllers.

The proportional derivative controller is used to improve the stability of the control system without affecting the steady-state error.