Digital actuators are actuation devices that receive and respond to discrete digital command signals rather than analogue inputs, encompassing components such as stepper motors, digitally controlled solenoids, and pulse-width-modulation (PWM)-driven drive mechanisms used in flight control, fuel management, and landing gear systems, together with the associated digital interface protocols, embedded control electronics, and position-feedback encoders that enable precise, repeatable positioning within fly-by-wire (FBW) architectures.
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