Method and apparatus for signal tracking using feedback control loop
US5495408A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 9, 1994 |
| Grant date | Feb 27, 1996 |
| Priority date | — |
| Expiry date | Nov 9, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B13/0225
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A feedback control loop having a variable attenuator controlled by oscillation detector means and overshoot detector means to better track the input signal. The oscillation detector means utilizes an estimated signal value compared to a subsequent measured value with the absolute difference of the two compared to predetermined threshold values. Should the calculated difference exceed predetermined threshold values, the variable attenuator value is adjusted and the process repeated after a brief disabling period to allow settling. In addition to the oscillation detector, an overshoot detector means may also be used alone or in combination with oscillator detector means to control the variable attenuator setting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.