PROPORTIONAL MIXING SYSTEM
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United States of America Patent
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Feb 12, 2015
app pub date -
Feb 22, 2013
filing date -
Feb 23, 2012
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Abstract
Provided is a highly precise system for controlling proportional mixing, wherein the proportional mixing system is capable of maintaining the mixture ratio of flow rates of a primary liquid and a secondary liquid at a predetermined target mixture ratio. This highly precise proportional mixing system maintains the mixture ratio of flow rates of a primary liquid and a secondary liquid to be constant while recognizing an error integrated retroactively using the integrated flow rates of the primary liquid and a secondary liquid. This highly precise proportional mixing system also estimates future integrated error from past error trends to control the instantaneous flow rate of the primary liquid and and/or secondary liquid.
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