| 摘要 |
<p>A casing (10) has recesses (10a,10b) housing coils (1,2) of magnetic bearings (11,12) and vibration sensors (3,4). The lower end of a rotary shaft (30) is coupled with a motor (13) and opposite end parts of the shaft are supported by a magnetic force. Experiment boxes are attached to the ends of four arms (24-27) secured on the X and Y axes. Plants, animals, etc., are placed in the boxes which are then turned. The unbalance of objects in the boxes causes a vibration in the shaft which is detected by vibration sensors (3,4) and absorbed by controlling the exciting current of the coils (1,2).</p> |
