Actuation (noun)

1. The process of putting into action, activating, or starting a device or mechanism.
2. The act of causing something to operate or work.

Origin:

Derived from the latin actus, 'act' or 'movement'.

Examples:

1. The actuation of the mechanical arm was controlled by a computer.
2. The actuation of the valve allowed the water to flow.
3. The actuation system is responsible for controlling the movements of the robot.
4. The actuation of the launch mechanism was successful.
5. The actuation of the elevator was smooth and quiet.