Question 2General Subjects - 1st Asst/Chief70% to pass
In a closed-loop process control system, what is meant by error?
AI Explanation
The correct answer is C) The signal in a controller that is obtained by subtracting the measured value of the controlled value from the set point.
In a closed-loop process control system, error refers to the difference between the desired or set point value and the actual measured value of the controlled variable. This error signal is used by the controller to make adjustments to the process in order to bring the actual value closer to the desired set point. The goal is to minimize this error to achieve the desired control of the system.
The other options are incorrect because they do not accurately describe the meaning of error in a closed-loop control system. Option A refers to damping of oscillations, option B describes the desired control response, and option D is the definition of gain, not error.
Related Questions
#1 As a result of a load or set point change, in addition to minimizing the maximum value of the error, what are the two additional objectives of a closed-loop control system? #3 In a closed-loop process control system, what term is used to describe the action of measuring the difference between the actual result and the desired result and using that difference to drive the actual result toward the desired result? #4 In a closed-loop process control system, what is meant by the proportional mode of control? #5 In a closed-loop process control system, what is meant by the integral mode of control?