Of course, the Hoover vibrates (somewhat). This is caused by the rotating brush with the relatively hard bristles and the somewhat uncomfortable running of the asynchronous AC motor (system-related).
However, this is a side effect and is NOT part of the operating principle as it is, for example, with the 'beater vacuums' from the '70s, where the air flow causes three or four rubber bands to vibrate, which then hit the floor...

It works with vibration and ultra violet light. You have the choice to switch the light off otherwise normally it activates on detecting a surface.