Invention Grant
- Patent Title: Apparatus and method for modeling and control of cross-direction fiber orientation processes
- Patent Title (中): 用于建模和控制横向纤维取向过程的装置和方法
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Application No.: US13028834Application Date: 2011-02-16
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Publication No.: US08862249B2Publication Date: 2014-10-14
- Inventor: Danlei Chu , Gregory E. Stewart , Cristian Gheorghe , Johan U. Backstrom
- Applicant: Danlei Chu , Gregory E. Stewart , Cristian Gheorghe , Johan U. Backstrom
- Applicant Address: CA Mississauga, Ontario
- Assignee: Honeywell ASCa Inc.
- Current Assignee: Honeywell ASCa Inc.
- Current Assignee Address: CA Mississauga, Ontario
- Main IPC: G05B13/02
- IPC: G05B13/02 ; D21G9/00 ; D21F7/06 ; G05B17/02

Abstract:
A method includes generating a model associated with cross-directional fiber orientation of a web, which includes identifying spatial frequency characteristics of a fiber orientation (FO) process. The method also includes providing the model for control of the FO process. Generating the model could include performing a spatial impulse test of the FO process, and long wavelength responses of the FO process can be identified by performing a spatial long wavelength test of the FO process or by retrieving information from a historical database. Actuator edge padding can be applied to the model in order to generate a controller model. A controller can be used to control the process based on the controller model. At least one parameter of the controller model can be dynamically adjusted during operation of the controller. The controller can change average fiber orientation angle profiles and twist profiles by only adjusting slice lip actuators in a headbox.
Public/Granted literature
- US20110295390A1 APPARATUS AND METHOD FOR MODELING AND CONTROL OF CROSS-DIRECTION FIBER ORIENTATION PROCESSES Public/Granted day:2011-12-01
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