| 摘要 |
<p>An oscillating pneumatodynamic bearing takes the form of a laminated transducer disc (2) co-operating with a flat surface (16) to form a squeeze bearing. A layer (4) of piezoelectric, magnetostrictive or electrostrictive material is laminated with a layer (6) of another material to provide cupping and uncupping of the transducer disc of the bearing when electrically excited by an oscillator (22), so that the transducer disc is able to fly above the bearing surface on a fluid which is usually ambient air compressed by the mechanical oscillation of the transducer disc at an ultrasonic frequency. The disc is connected mechanically to an object to be supported and to its electrical sources of energy at points along the locus (20) of zero or minimal oscillation. This locus is a nodal circle.</p><p>A tubular bearing of laminated form has interdigitated electrodes.</p> |
