Browse Definitions :
Definition

bang-bang (bang-bang control)

Bang-bang control is a type of control system that mechanically or electronically turns something on or off when a desired target (setpoint) has been reached. Bang–bang controllers, which are also known as two-step controllers, on-off controllers or hysteresis controllers, are used in many types of home and industrial control systems (ICS).

An old-fashioned house thermostat, for example, uses bang-bang control. When the temperature drops to a predetermined low set point, the thermostat switches the heating system on. When the temperature reaches a pre-determined high set point, the thermostat switches the heating system off. Depending upon the set points, this can result in a fairly wide range of acceptable temperatures and cause the heating system to have a fairly long response time. This is why bang-bang controllers are sometimes referred to as hysteresis controllers -- the word hysteresis describes a lag in response to change.

In product development, bang-bang control systems can be contrasted with proportional control systems. A smart thermostat in a hotel room, for example, might determine when there is an error between the setpoint and the current value of the process variable (the room's temperature) and respond to the slight deviation by opening or closing dampers. Proportional controls are more exact and have faster response times than bang-bang, all or nothing controls.

Light switches and dimmer switches also illustrate the difference between bang-bang and proportional controls. A light switch, which can be either on or off, uses bang-bang control. A dimmer switch, in contrast, reduces or increases power to the lighting load in order to achieve a lower or higher light output and uses proportional control.

This was last updated in January 2018

Continue Reading About bang-bang (bang-bang control)

SearchNetworking
SearchSecurity
  • man in the browser (MitB)

    Man in the browser (MitB) is a security attack where the perpetrator installs a Trojan horse on the victim's computer that is ...

  • Patch Tuesday

    Patch Tuesday is the unofficial name of Microsoft's monthly scheduled release of security fixes for the Windows operating system ...

  • parameter tampering

    Parameter tampering is a type of web-based cyber attack in which certain parameters in a URL are changed without a user's ...

SearchCIO
  • chief procurement officer (CPO)

    The chief procurement officer, or CPO, leads an organization's procurement department and oversees the acquisitions of goods and ...

  • Lean Six Sigma

    Lean Six Sigma is a data-driven approach to improving efficiency, customer satisfaction and profits.

  • change management

    Change management is a systematic approach to dealing with the transition or transformation of an organization's goals, processes...

SearchHRSoftware
SearchCustomerExperience
  • clickstream data (clickstream analytics)

    Clickstream data and clickstream analytics are the processes involved in collecting, analyzing and reporting aggregate data about...

  • neuromarketing

    Neuromarketing is the study of how people's brains respond to advertising and other brand-related messages by scientifically ...

  • contextual marketing

    Contextual marketing is an online marketing strategy model in which people are served with targeted advertising based on their ...

Close