Apparatus and method for filtering a digital signal
US6122605A · kind A · utility
68Cited by
10References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 18, 1998 |
| Grant date | Sep 19, 2000 |
| Priority date | — |
| Expiry date | Aug 18, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B13/024
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A closed loop feedback control system operates to maintain a process variable at or near a process variable setpoint. A digital filter is implemented with the controller to filter the process variable signal input to the controller. The filter includes both an amplitude filter to clip signal spikes and glitches and low pass filter to remove higher order, noise related frequencies from the signal, that could adversely affect computational speed of the controller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.