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US 4,707,779 AGranted
Process for controlling a parameter based upon filtered data
AssigneeMeasurex Corporation
InventorHung-Tzaw Hu
Life of this patent
Estimating the term…
Abstract
A process for controlling a parameter based upon sampled data X(i) is disclosed. The process includes sampling the data x(i), repeatedly determining filtered data y(i) based upon two filter factors and controlling the parameter based upon y(i).
Claims9
A process for controlling a parameter of a sheet material which is being manufactured, comprising:
- (a) causing the sheet material to travel;
- (b) moving a scanning means across the sheet a plurality of times, i;
- (c) measuring a parameter of the sheet with the scanning means in a plurality of zones, j, which are disposed side-by-side across the sheet to produce a plurality of data;
- (d) filtering the data using a filter factor which is calculated based upon the data;
- (e) controlling the parameter based upon the filtered data.
2 more elements
A process for controlling a parameter of a sheet material which is being manufactured, comprising:
- (a) causing the sheet material to travel;
- (b) moving a scanning means across the sheet a plurality of times, i;
- (c) measuring a parameter of the sheet with the scanning means in a plurality of zones, j, which are disposed side-by-side across the sheet to produce a plurality of data;
- (d) filtering the data using a filter factor which is recalculated after the scanning means has been moved across the sheet;
- (e) controlling the parameter based upon the filtered data.
2 more elements
Dependencies are inferred from the claim text.