Chapter 1 Questions & Answers
Control - ANS- the process of making a system variable adhere to a particular value
Reference Value - ANS- The value the control adheres to
Tracking Control - ANS- A system designed to follow a changing reference
Regulator - ANS- A system designed to maintain a fixed output regardless of the disturbances
present
Manual Control - ANS- A system that involves a person controlling a machine
Automatic Control - ANS- A system that involves machines only.
Tracking or Servo systems - ANS- systems designed to track a reference signal
Open Loop - ANS- If the controller does not use a measure of the system output to compute the
control action to take
Closed Loop or Feedback Control - ANS- If the controlled output signal is measured and fed back for
use in the control computation
Feed forward - ANS- The sending of an early warning to the control system based on any information
that could anticipate a track to be followed or a disturbance to be rejected.
Process or Plant - ANS- A simple system whose output is controlled
Actuator - ANS- A component whose output causes the process output to change