Position detection apparatus
US6490807B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2000 |
| Grant date | Dec 10, 2002 |
| Priority date | — |
| Expiry date | Jan 30, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/2457
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A stable signal is output in which when there is no movement, unstable output change does not occur, and an output change exceeding a predetermined limit does not occur. The variation &Dgr;PH in the output angle signal PH to be output is subjected to hysteresis and through rate limitations with respect to the variation APF in the input angle signal input thereto. When the variation APF in the input signal is in a hysteresis range of −Hys<&Dgr;PF<+Hys, the variation in the output angle signal is output as 0. When the variation &Dgr;PF in the input signal is in a hysteresis range of &Dgr;PF<−(Hys+SR) or &Dgr;PF>(Hys+SR), a through rate limitation is effected to thereby clip the variation in the output angle signal to SR. When the variation &Dgr;PF is in other regions, the output follows the input linearly with the output delayed by the hysteresis quantity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.