Transactions of the Institute of Systems, Control and Information Engineers
Online ISSN : 2185-811X
Print ISSN : 1342-5668
ISSN-L : 1342-5668
Experimental Study of Control Systems Using Fuzzy Inference for Absorption Chillers/Heaters
Masashi YASUDAAtsushi OGAWAKazuhiro HITOMIYoshio OZAWAMasahiro MAEKAWA
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1993 Volume 6 Issue 10 Pages 471-478

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Abstract

Generally speaking, it is difficult to make a model which satisfies completely all the characteristics for absorption chillers/heaters, therefore PID control is often used. In this paper, to improve energy saving with stable and fast response, we apply fuzzy control using well-known characteristics as knowledge for fuzzy inference to absorption chillers/heaters.
Consequently it is verified with experiments on a 100 USRton double stage absorption chillers/heaters that proposed multi-input fuzzy controlled system is better then PID controlled system with gains adjusted by fuzzy interence, when refrigeration load is quickly changed like step change, start-up and temperature of cooling water increases.

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