Browse Definitions :
Definition

control system

A control system is a set of mechanical or electronic devices that regulates other devices or systems by way of control loops. Typically, control systems are computerized.

Control systems are a central part of industry and of automation. The types of control loops that regulate these processes include industrial control systems (ICS) such as supervisory control and data acquisition (SCADA) and distributed control systems (DCS).

Control systems are used to enhance production, efficiency and safety in many areas, including:

  • Agriculture
  • Chemical plants
  • Pulp and paper mills
  • Quality control
  • Boiler controls and power plant
  • Nuclear power plants
  • Environmental control
  • Water treatment plants
  • Sewage treatment plants
  • Food and food processing
  • Metal and mines
  • Pharmaceutical manufacturing
  • Sugar refining plants

There are two main types of control loops: Open loops, which operate with human input, and closed loops, which are fully autonomous. Some loops can be switched between closed and open modes. When open, a switchable loop is manually controlled and when closed it is fully automated.

Programmable logic controllers (PLCs), programmable automation controllers (PACs), remote terminal units (RTUs), control servers, intelligent electronic devices (IEDs) and sensors are some of the elements of control loops that are in turn a part of control systems. The control loops that make up control systems are generally made themselves of a sensor, a controller and a final control element. The sensor reads the process variable or a related measurement. The controller receives the signal from the sensor and then forwards it to instrumentation, to remote terminal units and to final control elements where the process variable is adjusted, to be kept constant at what is known as a set point.

This was last updated in December 2017

Continue Reading About control system

SearchNetworking
  • virtual network functions (VNFs)

    Virtual network functions (VNFs) are virtualized tasks formerly carried out by proprietary, dedicated hardware.

  • network functions virtualization (NFV)

    Network functions virtualization (NFV) is a network architecture model designed to virtualize network services that have ...

  • overlay network

    An overlay network is a virtual or logical network that is created on top of an existing physical network.

SearchSecurity
  • encryption

    Encryption is the method by which information is converted into secret code that hides the information's true meaning.

  • X.509 certificate

    An X.509 certificate is a digital certificate that uses the widely accepted international X.509 public key infrastructure (PKI) ...

  • directory traversal

    Directory traversal is a type of HTTP exploit in which a hacker uses the software on a web server to access data in a directory ...

SearchCIO
  • resource allocation

    Resource allocation is the process of assigning and managing assets in a manner that supports an organization's strategic ...

  • chief digital officer (CDO)

    A chief digital officer (CDO) is charged with helping an enterprise use digital information and advanced technologies to create ...

  • security audit

    A security audit is a systematic evaluation of the security of a company's information system by measuring how well it conforms ...

SearchHRSoftware
SearchCustomerExperience
  • implementation

    Implementation is the execution or practice of a plan, a method or any design, idea, model, specification, standard or policy for...

  • first call resolution (FCR)

    First call resolution (FCR) is when customer service agents properly address a customer's needs the first time they call.

  • customer intelligence (CI)

    Customer intelligence (CI) is the process of collecting and analyzing detailed customer data from internal and external sources ...

Close