| 摘要 |
PROBLEM TO BE SOLVED: To provide a pulser ring that does not change a sensor function even in long-term use, and further can adjust magnetic force according to change in environment such as change in temperature. SOLUTION: A magnetized material 17 of a pulser ring 3 is formed by arranging a plurality of coil elements 21 for electromagnet formation where a different magnetic pole appears alternately when a current flows in a ring shape. COPYRIGHT: (C)2003,JPO
|
