Apparatus and method of controlling multi-input-single-output systems
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United States of America Patent
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Nov 28, 2006
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May 28, 2004
filing date -
May 30, 2003
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Abstract
An apparatus and method is disclosed for automatically controlling multi-input-single-output (MISO) systems or processes. The control output signal of a single-input-single-output (SISO) automatic controller is converted by a reverse, sequential or combined split-range setter into a plurality of ranges of signals so that the SISO controller is converted to a single-input-multi-output (SIMO) automatic controller based on certain criteria; and the resulting controller output signals are able to manipulate a plurality of actuators to control one continuous process variable in different operating conditions. Without the need of building process mathematical models, this inventive apparatus and method is useful for automatically controlling unevenly paired multivariable systems or processes where there are more system inputs than outputs including but not limited to pH processes, chemical reactors, and air handling units.
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