Boots – shoes – and leggings
Patent
1993-02-18
1995-01-10
Envall, Jr., Roy N.
Boots, shoes, and leggings
162252, 162253, 162262, G06F 1546, D21F 102
Patent
active
053813413
ABSTRACT:
A control system regulating the transverse profile of properties of a web in a paper or board machine is disclosed. The control system comprises a plurality of actuators and a corresponding plurality of actuator controllers. The actuators are arranged to be effective across the width of the web whose profile is to be regulated. Further included is a process controller and a feedback network connected to the process controller and provided with an arrangement for measuring the web profile to be regulated. The actuators are provided with intelligent actuator controllers. A data bus common to the actuator controllers is provided, along which occur data communications in a control hierarchy between a higher control device and said actuator controllers.
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Herrala Juha
Hytonen Jouko
Jarvinen Jarmo
Salmela Markku
Vahatalo Harri
Brown Thomas E.
Envall Jr. Roy N.
Valmet Paper Machinery Incorporated
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