| 摘要 |
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.
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