Define the following terms: Sensor Transducer Actuator Controller Control system

Question

Define the following terms: Sensor Transducer Actuator Controller Control system Operating bandwidth of a control system Control bandwidth Nyquist frequency Choose three practical dynamic systems each of which has at least one sensor, one actuator and a feedback controller. Briefly describe the purpose and operation of each dynamic system. For each system give a suitable value for the operating bandwidth, control bandwidth, operating frequency range of the sensor, and sampling rate for sensor signal for feedback control. Clearly justify the values that you have given.

Explanation / Answer

Answer 1

A- Sensor - It is a device that detects and responds to some type of input from the physical environment such as light,heat or pressure.

B- Transducer -It is an electronic device that converts energy from one form to another form of energy.

C- Actuator- It is a mechanical device that takes energy that is created by air, electricity or liquid and convert it into some kind of motion that motion can be in virtually any form, such as blocking, clamping or ejecting.

D- Controller-It is a device using mechanical, hydraulic, pneumatic or electronic techniques often in combination, but more recently in the form of a microprocessor which monitors and physically alters the operating conditions of a system.

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