Exam Question
(a) Explain about the basics and tuning of PID controllers (4)
(b) Explain about automatic control system and its advantages (6)
(c) Explain about control loop transmitter (6)
Class 4 (4th Engineer)
MET
📅 Jul 2022
Reference Answer
### (a) Basics and Tuning of PID Controllers
A Proportional-Integral-Derivative (PID) controller is a fundamental control loop feedback mechanism widely used in industrial and marine control systems. Its primary function is to continuously calculate an error value, `e(t)`, which is the difference between a desired Set Point (SP) and a measured Process Variable (PV). The controller's objective is to minimize this error by adjusting its output, which manipulates a final control element.
**1. Basics of PID Control Action:**
The controller output is a summation of three distinct control actions:
A Proportional-Integral-Derivative (PID) controller is a fundamental control loop feedback mechanism widely used in industrial and marine control systems. Its primary function is to continuously calculate an error value, `e(t)`, which is the difference between a desired Set Point (SP) and a measured Process Variable (PV). The controller's objective is to minimize this error by adjusting its output, which manipulates a final control element.
**1. Basics of PID Control Action:**
The controller output is a summation of three distinct control actions:
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