| 摘要 |
<p>#CMT# #/CMT# The body (1) is maintained in its position by friction (3) without any dissipation of energy into the surrounding cryogenic environment. The body is held in position using one or more means chosen from tilt bearings, magnetic bearings, gas bearings, fluid bearings, glide bearings or elastic hinges. Movement of the body is carried out using at least one actuator (5) for each displacement device, e.g. a magnetically movable component, especially an immersion coil, or a ceramic component which changes shape as a result of electrical and/or magnetic stimulus. #CMT#USE : #/CMT# For positioning a body in a cryogenic fluid. #CMT#ADVANTAGE : #/CMT# A body can be positioned in a cryogenic environment to an accuracy of several microns. The integration of the bearing and drive functions makes the positioning system more compact. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The figure shows a side view of the positioning device. 1 : body 3 : friction block 5 : piezoelectric actuator.</p> |
