Digital control system

1. What is digital control system?
2. What is an example of a digital control system?
3. What are the advantages of digital control system?
4. How does digital control work?

What is digital control system?

Digital control systems are usually have a mixture of continuous-time and discrete-time behavior. The control object exists continuously in time (thus the differential equation representation) while the controller is active only for brief periods of time.

What is an example of a digital control system?

• Examples 1

a) Residential heating and air-conditioning systems controlled by a thermostat ( temperature sensor). b) The cruise (speed) control of an automobile. c) Automatic hot water heater. d) Control system which automatically turns on a room lamp at dusk, and turns it off in daylight.

What are the advantages of digital control system?

Digital control has advantages over analog control in that digital operations can be easily controlled by a program, i.e. a piece of software, information storage is easier, accuracy can be greater and digital circuits are less affected by noise.

How does digital control work?

Direct digital control (DDC) is a control process in which a microprocessor controller constantly updates an internal information database by monitoring information from a controlled environment and continuously produces corrective output commands in response to changing control conditions.