Methods and apparatus to limit a change of a drive value in an electro-pneumatic controller

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United States of America Patent

PATENT NO 9063540
APP PUB NO 20130041481A1
SERIAL NO

13654091

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Abstract

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Example methods and apparatus to limit a change of a drive value in an electro-pneumatic controller are disclosed. A disclosed example method includes determining a slew limit of a controller based on noise in at least one of a control signal or a feedback signal, calculating a drive value based on the control signal and the feedback signal, and changing the calculated drive value if a difference between the drive value and a previous drive value is greater than the slew limit of the controller.

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Patent Owner(s)

Patent OwnerAddress
FISHER-CONTROLS INTERNATIONAL LLC205 SOUTH CENTER STREET MARSHALLTOWN IA 50158

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Seberger, Stephen George Marshalltown, US 8 30

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