| 摘要 |
<P>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. Ž<P>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 δt2 and a variation δt 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. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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