公开(公告)号：DE60119704T2

公开(公告)日：2007-04-26

申请号：DE60119704

申请日：2001-03-14

Applicant: ABB INC

Inventor： CHEN SHIH-CHIN ,  MURPHY F

IPC: D21F7/00 ,  D21G9/00

Abstract: Headbox transient responses for sheet weight and moisture are modeled as a combination of two sets of time constants and dead time delays. One set represents a shorter delay with faster response dynamics, the fast mode weight and moisture responses, and the other models the longer delay with slower dynamics, the slow mode weight and moisture responses. A weight and/or moisture transient model is then formed for headbox changes by combining the fast mode weight and moisture responses and the slow mode weight and moisture responses. Stock weight and moisture dynamic and delay time models are determined for operation of stock flow of the paper making machine and the stock flow is controlled in accordance with the stock weight and/or moisture models and the headbox weight transient and/or moisture transient model to compensate for weight and moisture changes in a web of paper being manufacture which weight and moisture changes result from headbox changes.

公开(公告)号：AU2003215319A1

公开(公告)日：2003-09-09

申请号：AU2003215319

申请日：2003-02-20

Applicant: CHEN SHIH CHIN ,  SUBBARAYAN RAVI ,  TRAN PETER Q ,  ABB INC

Inventor： CHEN SHIH-CHIN ,  SUBBARAYAN RAVI ,  TRAN PETER Q

IPC: D21F7/00 ,  D21G9/00

Abstract: A controller to provide base level fiber orientation control of a paper web. The controller achieves one or more indices that are derived from the online measurements of a fiber orientation sensor of the fiber ratio and the fiber angle. The indices are used for control of the sheet forming processes. The controller may be implemented by a single or multi stage fuzzy controller or the combination of fuzzy controllers with non-fuzzy logic controllers.

公开(公告)号：DE60143651D1

公开(公告)日：2011-01-27

申请号：DE60143651

申请日：2001-05-14

Applicant: ABB INC

Inventor： TRAN PETER QUANG ,  CHEN SHIH-CHIN

IPC: D21F7/06 ,  D21G9/00 ,  G05B13/02

公开(公告)号：CA2410859C

公开(公告)日：2010-01-26

申请号：CA2410859

申请日：2001-05-14

Applicant: ABB INC

Inventor： TRAN PETER QUANG ,  CHEN SHIH-CHIN

IPC: D21F7/00 ,  D21F7/06 ,  D21G9/00 ,  G05B13/02

Abstract: The CD (cross-machine direction) profile of a web of material being produced is monitored and controlled to update CD control settings on-line (i.e. while the processing is operating). Thus, changes in the operation of a machine manufacturing the web can be corrected before significant profile deviations from a desired CD profile target result. Detected variances in the CD profile that satisfy a search criteria initiate searches for improved CD control settings. A CD control performance indicator representative of effectiveness of a CD control is established, and CD mapping settings related to the CD control performance indicator are selected. Improved CD mapping settings are selected online, during sheet manufacture, which produce an improvement in said CD control performance. The CD control recognizes CD actuator mapping misalignments, determines improved CD control settings and applies the improved CD control settings to improve upon or correct mapping misalignments.

公开(公告)号：CA2402105C

公开(公告)日：2009-01-06

申请号：CA2402105

申请日：2001-03-14

Applicant: ABB INC

Inventor： MURPHY TIMOTHY F ,  CHEN SHIH-CHIN

IPC: D21F7/00 ,  D21F1/02 ,  D21F7/06 ,  D21G9/00 ,  G05B13/04

Abstract: Headbox transient response for sheet weight and moisture are modeled as a combination of two sets of time constants and dead time delays. One set represents a shorter delay with faster respons e dynamics, the fast mode weight and moisture responses, and the other models the longer delay with slower dynamics, the slow mode weight and moisture responses. A weight and/or moisture transient model is then formed for headbox changes by combining the fast mod e weight and moisture responses and the slow mode weight and moisture responses. Stock weight and moisture dynamic and delay time models are determined for operation of stock flow of the paper making machine and the stock flow is controlled in accordance with the stock weight and/or moisture models and the headbox weight transient and/or moisture transient model to compensate f or weight and moisture changes in a web of paper being manufacture which weight and moisture changes result from headbox changes.

公开(公告)号：DE60119704D1

公开(公告)日：2006-06-22

申请号：DE60119704

申请日：2001-03-14

Applicant: ABB INC

Inventor： CHEN SHIH-CHIN ,  MURPHY F

IPC: D21F7/00 ,  D21G9/00

Abstract: Headbox transient responses for sheet weight and moisture are modeled as a combination of two sets of time constants and dead time delays. One set represents a shorter delay with faster response dynamics, the fast mode weight and moisture responses, and the other models the longer delay with slower dynamics, the slow mode weight and moisture responses. A weight and/or moisture transient model is then formed for headbox changes by combining the fast mode weight and moisture responses and the slow mode weight and moisture responses. Stock weight and moisture dynamic and delay time models are determined for operation of stock flow of the paper making machine and the stock flow is controlled in accordance with the stock weight and/or moisture models and the headbox weight transient and/or moisture transient model to compensate for weight and moisture changes in a web of paper being manufacture which weight and moisture changes result from headbox changes.

公开(公告)号：AU6156001A

公开(公告)日：2001-12-24

申请号：AU6156001

申请日：2001-05-14

Applicant: ABB INC

Inventor： TRAN PETER QUANG ,  CHEN SHIH-CHIN

IPC: D21F7/06 ,  D21G9/00 ,  G05B13/02

公开(公告)号：CA2410859A1

公开(公告)日：2001-12-20

申请号：CA2410859

申请日：2001-05-14

Applicant: ABB INC

Inventor： TRAN PETER QUANG ,  CHEN SHIH-CHIN

IPC: D21F7/06 ,  D21G9/00 ,  G05B13/02

Abstract: The CD profile of a web of material being produced is monitored and controll ed to update CD control settings on-line so that changes in the operation of a machine manufacturing the web can be corrected before significant profile deviations from a desired CD profile target result. Detected variances in th e profile that satisfy a search criteria initiate searches for improved CD control settings. The CD control recognizes CD actuator mapping misalignment s, determines improved CD control settings and applies the improved CD control settings to fine tune a CD controller and thereby improve upon or correct mapping misalignments. The CD control also recognizes non-smoothness of the setpoints of the CD actuators and controls the smoothness of the setpoints. Recognition and correction of either CD actuator mapping misalignments or CD actuator setpoint smoothness or both can be performed by the automated optimization of the present application.

公开(公告)号：CA2402105A1

公开(公告)日：2001-10-04

申请号：CA2402105

申请日：2001-03-14

Applicant: ABB INC

Inventor： CHEN SHIH-CHIN ,  MURPHY TIMOTHY F

IPC: D21F7/00 ,  D21G9/00

Abstract: Headbox transient responses for sheet weight and moisture are modeled as a combination of two sets of time constants and dead time delays. One set represents a shorter delay with faster response dynamics, the fast mode weight and moisture responses, and the other models the longer delay with slower dynamics, the slow mode weight and moisture responses. A weight and/or moisture transient model is then formed for headbox changes by combining the fast mode weight and moisture responses and the slow mode weight and moisture responses. Stock weight and moisture dynamic and delay time models are determined for operation of stock flow of the paper making machine and the stock flow is controlled in accordance with the stock weight and/or moisture models and the headbox weight transient and/or moisture transient model to compensate for weight and moisture changes in a web of paper being manufacture which weight and moisture changes result from headbox changes.