Non-contact rotational angle measurement device for rotor, has shaft to which stator and rotor are mounted, held by cone bearing

摘要

The stator (6) and a rotor (4) are mounted turnably on a shaft (10). The shaft held by cone bearings (7,8) is biased by magnetic forces. An air gap (14) is maintained between permanent magnet (5) of rotor and stator. Two segments of stator are separated by non-magnetically-permeable gap. The cone bearings are biased by magnetic forces or by plastic or metal spring element (9). The magnetic sensitive element is formed as a field plate or magnetic transistor or coil or magnetoresistive element or as an Hall element.