Question 7
(a). Explain the term servomechanism.
(b). List two examples of servomechanism.
(c). State four applications of servomechanism.
Observation
The expected answers were;
(a). A system in which the output is mechanically controlled by the difference between the input and feedback signals.
(b). Examples of Servomechanism
-Hydraulic servos
-Pneumatic servos
-Electric servos
(c). Applications of Servomechanism
- Radar control
- Automatic doors
- Auto pilots of aircraft
- Video player
- Robot
- Communication satellite
- Space vehicle
One generally accepted definition of the term servomechanism is an automatic device that uses error-sensing feedback to correct the performance of a mechanism. The term correctly applies only to systems where the feedback or error-correction signals help to control mechanical position or other parameters. Servomechanism are mainly position control and speed control devices found in hydraulic, pneumatic and electrical/electronic drives. Despite the frequency with which this question features, performance was rather poor.