PROBLEM TO BE SOLVED: To smoothly heat water in an aquarium in a short time without exceeding a preset temperature and also control the water to a preferable water quality.SOLUTION: The controlling system includes a water temperature sensor 3 for detecting a present water temperature t of an aquarium, a heating means 6 for heating water in the aquarium and a controlling means 2 for controlling the heating means 6. The heating means 6 has a feeding means for feeding supply water to the aquarium and a discharging means for discharging water from the aquarium, and the controlling means 2 includes a fuzzy inference setting part 24 to set a prescribed fuzzy inference f and a conclusion calculating part 25 to apply a deviation &deltat2 and a variation &deltat to the fuzzy inference f and calculate the conclusion v. The heating means 6 is controlled by fuzzy control based on the conclusion v so as to agree the present temperature t with the target water temperature t2.COPYRIGHT: (C)2010,JPO&INPIT【課題】短時間で設定温度を越えることなく、水槽の水を滑らかに加熱すると共に、同時に好適な水質に調整可能とする。【解決手段】水槽の現状水温tを検出する水温センサー3と、水槽の水を加熱する加熱手段6と、加熱手段6を制御する制御手段2とを備え、加熱手段6は、給水用水を水槽へ給水する給水手段と、水槽から排水する排水手段とを備え、制御手段2は、所定のファジー推論fを設定するファジー推論設定部24と、偏差δt2及び変化量δtをファジー推論fに適用して結論vを算出する結論算出部25とを備え、結論vに基づいて、現状水温tが目標水温t2になるように加熱手段6をファジー制御する。【選択図】図2
