Rotational angle detecting apparatus, torque detecting apparatus and steering apparatus
US6935195B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2003 |
| Grant date | Aug 30, 2005 |
| Priority date | — |
| Expiry date | Mar 13, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L5/221
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A rotational angle detecting apparatus wherein one or more first targets 3a are provided on a steering shaft 13 so that first detecting means 1A outputs a detection signal as the steering shaft 13 rotates, second detecting means 1B outputs a detection signal having a phase different from that of the detection signal of the first detecting means 1A, and the rotational angle of the steering shaft 13 is detected on the basis of the detection signals outputted by the first detecting means 1A and the second detecting means 1B. A rotational angle detecting apparatus further comprising second targets 3b, the number of which is prime to the number of the first targets 3a, provided on the steering shaft 13, third detecting means 3A, disposed opposite to the second targets 3b, for outputting a detection signal as the steering shaft 13 rotates, and fourth detecting means 3B for outputting a detection signal having a phase different from that of the detection signal of the third detecting means 3A, wherein the rotational angle of the steering shaft 13 is detected on the basis of the detection signals outputted by the first to fourth detecting means 1A, 1B, 3A and 3B, thereby being capable of d…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.