Control

Example of digital control system

Example of 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.

  1. What is a digital control systems?
  2. Where is digital control system used?
  3. Why do we use digital control system?
  4. What are the digital controls in real systems?

What is a digital control systems?

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.

Where is digital control system used?

Digital control theory is the technique to design strategies in discrete time, (and/or) quantized amplitude (and/or) in (binary) coded form to be implemented in computer systems (microcontrollers, microprocessors) that will control the analog (continuous in time and amplitude) dynamics of analog systems.

Why do we use 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.

What are the digital controls in real systems?

Digital control system is an implementation of real-time system that are embedded in sensors and actuators and functions as digital controller. The plant term in the block diagram refers to a controllers system, for example, an engine, a brake, an aircraft.

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