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  2. Proportional–integral–derivative controller - Wikipedia

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

    The difference between these two values is called ... An electric motor may lift or lower ... The order of the integrator and differentiator add increased flexibility ...

  3. Differentiator - Wikipedia

    en.wikipedia.org/wiki/Differentiator

    The differentiator circuit is essentially a high-pass filter. It can generate a square wave from a triangle wave input and produce alternating-direction voltage spikes when a square wave is applied. In ideal cases, a differentiator reverses the effects of an integrator on a waveform, and conversely.

  4. Integrator - Wikipedia

    en.wikipedia.org/wiki/Integrator

    A voltage integrator is an electronic device performing a time integration of an electric voltage, thus measuring the total volt-second product. A first-order low-pass filter such as a resistor–capacitor circuit acts like a voltage integrator at high frequencies well above the filter's cutoff frequency.

  5. RC circuit - Wikipedia

    en.wikipedia.org/wiki/RC_circuit

    A resistor–capacitor circuit (RC circuit), or RC filter or RC network, is an electric circuit composed of resistors and capacitors. It may be driven by a voltage or current source and these will produce different responses. A first order RC circuit is composed of one resistor and one capacitor and is the simplest type of RC circuit.

  6. Op amp integrator - Wikipedia

    en.wikipedia.org/wiki/Op_amp_integrator

    The operational amplifier integrator is an electronic integration circuit. Based on the operational amplifier (op-amp), it performs the mathematical operation of integration with respect to time; that is, its output voltage is proportional to the input voltage integrated over time.

  7. Control system - Wikipedia

    en.wikipedia.org/wiki/Control_system

    Its name comes from the information path in the system: process inputs (e.g., voltage applied to an electric motor) have an effect on the process outputs (e.g., speed or torque of the motor), which is measured with sensors and processed by the controller; the result (the control signal) is "fed back" as input to the process, closing the loop. [4]

  8. Classical control theory - Wikipedia

    en.wikipedia.org/wiki/Classical_control_theory

    Its name comes from the information path in the system: process inputs (e.g., voltage applied to an electric motor) have an effect on the process outputs (e.g., speed or torque of the motor), which is measured with sensors and processed by the controller; the result (the control signal) is "fed back" as input to the process, closing the loop.

  9. Thermoelectric generator - Wikipedia

    en.wikipedia.org/wiki/Thermoelectric_generator

    The flow of charge carriers between the hot and cold regions in turn creates a voltage difference. In 1834, Jean Charles Athanase Peltier discovered the reverse effect, that running an electric current through the junction of two dissimilar conductors could, depending on the direction of the current, cause it to act as a heater or cooler. [7]