US 11,634,293 B2Granted

Adaptive sheet caliper control system and apparatus and methods

AssigneeKimberly-Clark Worlwide, Inc.

InventorsRyan A. Petras, Matthew W. Trautschold, Mark G. Dollevoet, Vivek M. Karandikar, Julie A. Hansen, Walter F. Montgomery, Antwain Taylor, Kevin B. Sartain, Justin P. Stergar

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Abstract

The present invention provides an adaptive control system to control a plant using direct output feedback in which a function of the full plant state, as opposed to estimates thereof, is used for feedback control of the plant. The adaptive control system of this invention is therefore highly useful in the control of plants, particularly plants for controlling the physical properties of rolls of web material and more particularly a calendering apparatus. Accordingly, in a particularly preferred embodiment the adaptive control system of this invention controls loading of a calender apparatus, such as a pair of opposed rolls forming a calendering stack, based upon the physical properties of a previously processed web.

Claims10

Dependent claims

A method for operating a system which regulates the load applied to one or more actuators during the converting of a parent roll of spirally wound sheet material having a parent roll diameter into finished rolled products of spirally wound sheet material comprising the steps:

(a) generating a reference model;
(b) measuring the parent roll diameter;
(c) providing a first operating state of the system to regulate the one or more actuators depending upon the parent roll diameter and the reference model;
(d) sensing at least one characteristic of the finished rolled product with a sensor and generating at least one sensor output;
(e) communicating the at least one sensor output to a comparator;
(f) receiving the at least one sensor output by a comparator;
(g) using the at least one sensor output in an adaptive control scheme whereby the at least one sensor output received by the comparator is compared to the reference model to generate a system error;
(h) adjusting the load to be applied by the one or more actuators in a second operating state of the system based upon the system error;
and
(i) adjusting the reference model based upon the system error.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/873,725Filed 26 Jul 2022 · continuation
Priority: 10 Jun 2019
Published: US 2022/0371846 A124 Nov 2022
Granted: 25 Apr 2023
Term ends: Not estimatedThe source records don’t support an estimate.

Classification28 codes

B65H 18/26
Web-winding mechanisms: mechanisms for controlling contact pressure on winding-web package, e.g. for regulating the quantity of air between web layers
B65H 19/30
In winding mechanisms or in connection with winding operations: lifting, transporting, or removing the web roll; Inserting core
A61K 45/06
Medicinal preparations containing active ingredients not provided for in groups A61K31/00 - A61K41/00: mixtures of active ingredients without…
B65H 20/02
Advancing webs: by friction roller

Family

Application62/859,326Us provisional application · filed 10 Jun 2019
Application16/897,790Parent of this continuation · filed 10 Jun 2020
US 2022/0371846 A1Pre-grant publication · published 24 Nov 2022
US 11,434,096 B2Parent of this continuation
US 2020/0385227 A1Published application
US 11,634,293 B2This patent

From the US filing history. Foreign family members aren’t listed.