| 摘要 |
PROBLEM TO BE SOLVED: To execute calculation processing to control a hot water temperature of a hot water supply device applying a Smith method without excessively increasing a calculation load and a necessary storage capacity.SOLUTION: A controller 320# determines an input number u(t) corresponding to a requested generation heat quantity of a hot water supply device 100 as a control object by feedback calculation based on temperature deviation &Dgr;&thetas;(t). The temperature deviation &Dgr;&thetas;(t) is corrected by a Smith compensation temperature Tsm(t) calculated by a Smith compensator 350# to estimate a variation of a hot water supply temperature before the lapse of a waste time corresponding to delay in detection of the hot water supply temperature Th(t). The Smith compensator 350# calculates a Smith compensation temperature Tsm(t+&Dgr;t) used in a next control period on the basis of the input number u(t) and the Smith compensation temperature Tsm(t), and a time constant determined according to a flow rate Q(t) of the hot water supply device 100. |
