| http://www.w3.org/ns/prov#value | - where E is the error signal, QS is the set point quantity, QA is the measured quantity, A is a constant of proportionality and B is the width of the control band expressed in terms of the quantity Q. Operation of the controlled apparatus is proportional to the error signal E, which in the present invention is based upon the duty cycle of operation of the temperature modifying apparatus.
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