How Gimbal Motor Works?
A gimbal is a pivoted support that allows the rotation of an object about a single axis. ... Powered by three brushless motors, the gimbals have the ability to keep the camera level on all axes as the camera operator moves the camera.
Drone gimbals are sold in two ways – as a separate unit upon which a camera (GoPro, for example) mounts or as a complete unit with an integrated camera (DJI, Blade, Yuneec). Shown below is the gimbal and camera assembly for a DJI Phantom 3 quadcopter.
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The larger mechanical parts of a gimbal are quite basic – the camera holder and 3 motors which work together to keep the assembly level and vibration free. However, what goes on behind the scenes to allow this is much more complex – so advanced, in fact, that the consumer camera gimbal was an impossibility until approx. 2012.