| 摘要 |
A rotation angle detector contains code plate which can be rotated in connection with a steering shaft and has protrusion groups. arranged on an inner track and outer track T 1, T 2 and photo-interrupter groups each having a pair of first photo-interrupters arranged along the inner track T 1 and a second photo-interrupter arranged in the substantially center location of the photo-interrupters. Among the photo-interrupters the light-emitting diode of the first photo-interrupter arranged at the inner track T 1 is located at the outer circumferential side and the light-emitting diode of the second photo-interrupter arranged at the outer track T 2 is located at the inner circumferential side.
|
