Cross-directional control of sheetmaking systems
US4965736A · kind A · utility
19Cited by
6References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 15, 1988 |
| Grant date | Oct 23, 1990 |
| Priority date | — |
| Expiry date | Jun 15, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/346
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system and method for controlling sheetproducing machines includes measurement devices for measuring properties of a sheet at cross-directional locations to provide cross-directional profiles, and spatial-frequency splitting means for separating low spatial-frequency components from high spatial-frequency components for each profile. The separated high and low spatial-frequency components provide operating signals to controllably adjust properties of the sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.