Adaptive clock thermostat means for controlling over and undershoot

Claim 1

Clock thermostat means adaptively controlling the amount of overshoot or undershoot of space temperature due to changes in the setpoint of said thermostat means, including: microcomputer means including real time clock means and memory means; data input means connected to said microcomputer means to input a sequence of desired heat and cool control temperature setpoints and times for a desired temperature control by said thermostat means; temperature sensor means including connection means to monitor temperature at said thermostat means; said connection means connected to said microcomputer means to communicate a temperature at said sensor means to said microcomputer means; said thermostat means further including output switch means adapted to control heating and cooling equipment by said thermostat means; said microcomputer means and said memory means including overshoot-undershoot correction program means which is operable to adjust a gain of said thermostat means; said overshoot-undershoot correction program means and said memory means providing a gain constant that is a function of a setpoint change with said gain constant affecting said gain of said thermostat means; and said overshoot-undershoot correction program means and said memory means creating a new gain constant after each setpoint recovery to progressively adjust said gain of said thermostat to limit the amount of overshoot or undershoot of said space temperature to an acceptable level.