Patent ID: 6522954
Filing Date: 2003-02-18
Classification: G05B,G05D

Abstract:
A smart control strategy for regulating a temperature controller for supplying or exhausting heat to/from a room, object or fluid in which a maximum temperature setpoint (setpoint-MAX) and a minimum temperature setpoint (setpoint-MIN) is specified and the time profile of the actual temperature of the room, object or fluid is regularly measured, comprising the following steps:a) defining an nth ON point in time (t-ON(n)) at which the temperature controller is to be signaled ON, b) defining an nth OFF point in time (t-OFF(n)) at which the temperature controller is to be signaled OFF, c) sensing the two nth extreme values (actual-MAX(n) and actual-MIN(n)) resulting after ON of the temperature controller in the actual temperature profile in which the actual temperature has a local minimum and a local maximum, d) determining the 1st derivation of the temperature profile with time in the nth ON point in time (t-ON(n)), e) determining the optimum nth ON/OFF points in time (t-optON(n) and t-optOFF(n)) from the values of the nth OFF point in time (t-OFF(n)) and the nth ON point in time (t-ON(n)), the two nth extreme values (actual-MAX(n) and actual-MIN(n)) in the temperature profile and the 1st derivation of the temperature profile with time in the nth ON point in time (t-ON(n)) at which for the nth extreme value (actual-MAX(n)) a local maximum in the temperature profile equaling the specified maximum temperature setpoint (setpoint MAX(n)) and for the nth extreme value (actual-MIN(n)) a local minimum in the temperature profile equaling the specified minimum temperature setpoint (setpoint MIN(n)) is attained, f) incrementing n by 1 and repeating the steps a) to f) taking into account the determined nth ON/OFF points in time (t-optON(n) and t-optOFF(n)) as well as the 1st derivation of the temperature profile with time in the nth ON point in time (t-ON(n)) in establishing the n+1 ON/OFF points in time (t-ON(n+1) and t-OFF(n+1)).