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  2. HVAC control system - Wikipedia

    en.wikipedia.org/wiki/HVAC_control_system

    The unit controllers typically have analog and digital inputs that allow measurement of the variable (temperature, humidity, or pressure) and analog and digital outputs for control of the transport medium (hot/cold water and/or steam). Digital inputs are typically (dry) contacts from a control device, and analog inputs are typically a voltage ...

  3. Proportional–integral–derivative controller - Wikipedia

    en.wikipedia.org/wiki/Proportional–integral...

    Proportional–integral–derivative controller. A proportional–integral–derivative controller ( PID controller or three-term controller) is a control loop mechanism employing feedback that is widely used in industrial control systems and a variety of other applications requiring continuously modulated control.

  4. TI MSP430 - Wikipedia

    en.wikipedia.org/wiki/TI_MSP430

    Analog pool; The Analog Pool (A-POOL) module can be configured as an ADC, DAC, comparator, SVS or temperature sensor. It allows flexibility for the user to program a series of analog functions with only one setup. Comparator A, A+; The MSP430's comparator module provides precision slope analog-to-digital conversions.

  5. Programmable logic controller - Wikipedia

    en.wikipedia.org/wiki/Programmable_logic_controller

    PLC output can include elements such as indicator lamps, sirens, electric motors, pneumatic or hydraulic cylinders, magnetic relays, solenoids, or analog outputs. The input/output arrangements may be built into a simple PLC, or the PLC may have external I/O modules attached to a fieldbus or computer network that plugs into the PLC.

  6. Thermostat - Wikipedia

    en.wikipedia.org/wiki/Thermostat

    The advantage of the low voltage control system is the ability to operate multiple electromechanical switching devices such as relays, contactors, and sequencers using inherently safe voltage and current levels. [15] Built into the thermostat is a provision for enhanced temperature control using anticipation.

  7. Direct digital control - Wikipedia

    en.wikipedia.org/wiki/Direct_digital_control

    Direct digital control is the automated control of a condition or process by a digital device (computer). [ 1][ 2] Direct digital control takes a centralized network-oriented approach. All instrumentation is gathered by various analog and digital converters which use the network to transport these signals to the central controller.

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