Control system for papermaking machine headbox
US4374703A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 8, 1981 |
| Grant date | Feb 22, 1983 |
| Priority date | — |
| Expiry date | Jan 8, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S162/06
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A system for the control of a paper machine headbox having sensors for the measurement of the parameters of the process and actuators of the members of the process, functionally connecting at least most of the sensors to an at least equal number of actuators via a multivariable centralized control member which makes it possible to control each actuator by the taking into account and processing of the measurement information of one or more sensors, and causing the measurement information to act on each of the sensors functionally connected to the actuators on one or more members to obtain a resultant action in which only the parameter measured by this sensor is influenced while the secondary repercussions on the outer parameters are eliminated. Another characteristic, the invention permits rapid intervention taking into account the information on the substance flow rate at the headbox, eliminating the usual disturbing influences due to the hydraulic values of the process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.