Heating controls and methods for an environmental control system
First Claim
1. A heating, ventilating, and air conditioning (HVAC) control system comprising:
- a processing system in operative communication with a heating system, the processing system being configured and programmed to control the heating system to;
acquire historical temperature information regarding heating of an enclosure during at least one historical period in which the enclosure was heated by the heating system under the control of said HVAC control system;
determine a lag value that represents at least in part an amount of system inertia for the enclosure;
determine a plurality of candidate heating control strategies based on said historical temperature information;
determine an optimal heating control strategy from said plurality of candidate heating control strategies by computing a plurality of predicted temperature responses corresponding respectively to the plurality of candidate heating control strategies; and
control the heating system according to the determined optimal heating control strategy.
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Accused Products
Abstract
Embodiments of the invention describe thermostats that use model predictive controls and related methods. A method of controlling a thermostat using a model predictive control may involve determining a parameterized model. The parameterized model may be used to predicted ambient temperature values for an enclosure. A set of radiant heating system control strategies may be selected for evaluation to determine an optimal control strategy from the set of control strategies. To determine the optimal control strategy, a predictive algorithm may be executed, in which each control strategy is applied to the parameterized model to predict an ambient temperature trajectory and each ambient temperature trajectory is processed in view of a predetermined assessment function. Processing the ambient temperature trajectory in this manner may involve minimizing a cost value associated with the ambient temperature trajectory. The radiant heating system may subsequently be controlled according to the selected optimal control strategy.
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Citations
30 Claims
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1. A heating, ventilating, and air conditioning (HVAC) control system comprising:
a processing system in operative communication with a heating system, the processing system being configured and programmed to control the heating system to; acquire historical temperature information regarding heating of an enclosure during at least one historical period in which the enclosure was heated by the heating system under the control of said HVAC control system; determine a lag value that represents at least in part an amount of system inertia for the enclosure; determine a plurality of candidate heating control strategies based on said historical temperature information; determine an optimal heating control strategy from said plurality of candidate heating control strategies by computing a plurality of predicted temperature responses corresponding respectively to the plurality of candidate heating control strategies; and control the heating system according to the determined optimal heating control strategy. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 19, 20, 21, 22)
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9. A method of controlling a heating, ventilating, and air conditioning (HVAC) control system comprising:
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providing a heating, ventilating, and air conditioning (HVAC) control system that includes a processing system in operative communication with a heating system; acquiring historical temperature information regarding heating of an enclosure during at least one historical period in which the enclosure was heated by the heating system under the control of said HVAC control system; determining a lag value that represents at least in part an amount of system inertia for the enclosure; determining a plurality of candidate heating control strategies based on said historical temperature information; determining an optimal heating control strategy from said plurality of candidate heating control strategies by computing a plurality of predicted temperature responses corresponding respectively to the plurality of candidate heating control strategies; and controlling the heating system according to the determined optimal heating control strategy. - View Dependent Claims (10, 11, 12, 13, 23, 24, 25, 26)
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14. A computer-program product, tangibly embodied in a non-transitory machine readable storage medium, including instructions configured to cause a data processing apparatus of an HVAC control system to:
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acquire historical temperature information regarding heating of an enclosure during at least one historical period in which the enclosure was heated by a heating system under the control of said HVAC control system; determine a lag value that represents at least in part an amount of system inertia for the enclosure; determine a plurality of candidate heating control strategies based on said historical temperature information; determine an optimal heating control strategy from said plurality of candidate heating control strategies by computing a plurality of predicted temperature responses corresponding respectively to the plurality of candidate heating control strategies; and control the heating system according to the determined optimal heating control strategy. - View Dependent Claims (15, 16, 17, 18, 27, 28, 29, 30)
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Specification