Principles Of PID

Question 1

What is a feedback control loop?

Answer 1

Measurement of actual process operations compared to a desired point of process operation

Question 2

Define term proportional

Answer 2

Size of the control system’s response to an error in proportion to size of the error

Question 3

Define term integral

Answer 3

Reset, removed control offset

Question 4

Define term derivative

Answer 4

Rate, control function in which the system opposes any change in process variable

Question 5

Define term controller

Answer 5

Device which establishes set point

Question 6

What indicators are on the controller face?

Answer 6

Set point value
Feedback value
Controller output

Question 7

What is the process variable?

Answer 7

Current measured value of a particular part of a process which is being monitored or controlled

Question 8

What is a manipulated variable?

Answer 8

Part of an experiment that you can change to see how other variables respond

Question 9

What is a disturbance variable?

Answer 9

Element which can impact a process negatively, whether or not it directly inputs to that process