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US 5,240,178 AGranted
Active anticipatory control
OwnerThomas L. Dewolf, Thomas R. Phillips +1inventors
InventorsThomas L. Dewolf, Thomas R. Phillips, Ronald W. Bench
Life of this patent
Estimating the term…
Abstract
A space temperature control which prevents overshoot and undershoot of a desired space temperature by adjusting a subsequent sensed space temperature as a function of a previous sensed maximum space temperature to deenergize a space conditioning device at the adjusted temperature to maintain the desired space temperature.
Claims4
A control device for controlling a space temperature modifying apparatus comprising:
- means for measuring an ambient space temperature;
- means for setting a desired temperature setpoint to be maintained in a space by said space temperature modifying apparatus;
- and
- means, connected to said measuring means and said setpoint setting means, for calculating a next subsequent space temperature at which said space temperature modifying apparatus is deenergized upon comparison between a maximum space temperature attained after a previous deenergization of said space temperature modifying apparatus and the desired temperature setpoint, to maintain the desired temperature setpoint;
- where said calculation means calculates an anticipated space temperature at which said space temperature modifying apparatus is deenergized to maintain the desired temperature setpoint according to the relationship
- T.sub.a =T.sub.r +N K.sub.i (1-K.sub.exp)
- in which relationship T.sub.a is the anticipated space temperature, T.sub.r is the current space temperature, K.sub.i is an anticipator range constant, N is a mode constant set to +1 for heating and -1 for cooling and K.sub.exp is an exponential growth constant.
4 more elements
Dependencies are inferred from the claim text.