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The time division PID control action was applied to air temperature and humidity control in a growth chamber where four direct-expansion coils were used for cooling and dehumidifying. This system was ...optimalized by adjusting the control interval of the time division PID control action: The interval of 60 sec was optimal for accurate control and energy conservation. In this growth chamber, it was made possible to control air temperature and humidity with accuracies of ±0.3℃ and ±3%RH even under energy conservative condition.続きを見る
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