发明名称 |
VARIABLE RELUCTANCE SENSOR |
摘要 |
A variable reluctance sensor is disclosed for determining the speed or position of a moveable target object. The sensor has a magnet which is coupled to a pole piece. A wire coil is located annularly around the pole piece. The magnet generates flux in the coil which is changed by the movement of the target object. A second bucking magnet is annularly located around the coil and generates a flux field to reinforce the flux in the coil and to prevent flux from leaking from the wire coil and pole piece. In this manner, the voltage output from the coil is increased due to the decrease in flux leakge. A processing unit is coupled to the wire coil. The processor unit measures the reluctance generated in the coil from the movement of the target object.
|
申请公布号 |
WO02082099(A1) |
申请公布日期 |
2002.10.17 |
申请号 |
WO2001IB02908 |
申请日期 |
2001.12.20 |
申请人 |
MANNESMANN VDO AG |
发明人 |
SPELLMAN, CHARLES, ALBERT |
分类号 |
G01D5/20;G01P3/488;(IPC1-7):G01P3/488;G01B7/00;G01B7/30 |
主分类号 |
G01D5/20 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|