That means the controlled temperature al1ow waving in a range in a period . when the change of the temperature indoor is out of the range we enacted , the system begin to regulatc . compensate the windage last time leave behind } before decide the heatsupply parameter for the next time 即允许被控室内温度在一段时间内存在一定幅度的波动,当室温变化幅度超过设定值时系统开始调节,在确定下一时间段的供热参数之前对上一时间段的遗留偏差在短时间内给予补偿。