Rotation of acoustically levitated objects controlled. Phase difference alternated between +90 degrees and -90 degrees. If system is at positive phase difference during greater portion of modulation cycle than at negative phase difference (or vice versa), there is nonzero time-averaged acoustic torque.
Phase Modulation Varies Average Acoustic Torque
NASA Tech Briefs ; 7 , 4
1983-10-01
Sonstige
Keine Angabe
Englisch
Camshaft phase adjuster varies valve timing
Kraftfahrwesen | 1986
|British Library Conference Proceedings | 2022
|How driving-boxpractice varies
Engineering Index Backfile | 1925
|SAE Technical Papers | 2022
|Preload varies in spindle bearings
Kraftfahrwesen | 1984