What do you mean by digital control system?

A digital control system is a control system that processes signals coming from sensors by means of a computer. This process is known as signal digitalisation. These control systems, which include analogue-digital conversion, are also known as direct digital control 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 components of digital control system?

Associated with the above three main elements will be the necessary interfaces between signal input and control output, such as a digital-to-analogue (d-a) converter, and system logic such as coincidence detection, gating and data transfer.

What is a DDC system for HVAC?

DDC systems consist of a central computer workstation that monitors HVAC, lighting, or other system functions via a series of sensors. These sensors transmit data back to the workstation, where sophisticated software monitors performance and makes operational adjustments as necessary.

How does a digital controller work?

A digital controller is a small digital unit that acts as a system controller. Depending on the controlling requirement, a digital controller can take the form of a desktop computer or it can be as small as a micro controller. D/A Conversion – Digital outputs are converted into analog inputs for the device.

What are control systems used for?

A control system manages, commands, directs, or regulates the behavior of other devices or systems using control loops. It can range from a single home heating controller using a thermostat controlling a domestic boiler to large industrial control systems which are used for controlling processes or machines.

What are some advantages of a DDC system?

Implementing DDC can provide you technological benefits including central monitoring and control, monitoring trends reports, improved energy efficiency, smart security, easier maintenance, simple climate and lighting control, simple retro-commissioning and increased safety.

What is difference between PLC and DDC?

A programmable logic controller (PLC) is a ruggedized hardware device with a dedicated CPU and internal operations system used in industrial automation. A direct digital control (DDC) is a computer-based control process in which the computer acts as a controller.