Chapter 14, Problem 6RQ

Program Plan Intro

Closed-loop control system:

• A feedback path is employed in closed-loop control system to measure the original system parameters such as pressure, speed, and so on.
• Here, the controller produces an error signal which initiates corrective action and energize the output device.
• The main characteristic of a closed-loop control system is that it can sense and measure the actual output of the system.
• Examples of closed-loop systems include cooling system in car, water level controller, tracking radar systems, and many others.

Explanation of Solution

b.

Function of process variable:

• Process variable is also called as process value or process parameter and usually abbreviated as PV...

Explanation of Solution

c.

Function of error amplifier:

• Error amplifier is used to determine the matching between the set point and the process operation...

Explanation of Solution

d.

Function of controller:

• Controllers are used to produce output signals...

Explanation of Solution

e.

Function of output actuator:

• Output actuators are normally used to convert system output electrical signals into physical actions...