Full spectrum universal controller
First Claim
1. A method for proportional control of a thermostatically controlled residential air conditioning system, comprising:
- providing a master control unit comprising a central microprocessor operatively coupled with a fixed task control portion and a modular control portion,said fixed task portion including a temperature measurement circuit operatively coupled with an indoor temperature sensor;
said modular control portion being operatively coupled with a first variable speed drive control module for control of a compressor of said residential air conditioning system,wherein said master control unit is configured for proportional-type loop control of a system capacity by manipulating a speed of said compressor with said first variable speed drive control module, said system capacity providing a process variable and said speed of said compressor providing a manipulated variable of said proportional-type loop control;
a set of computer-readable instructions stored in non-volatile memory for access by said central microprocessor, said computer-readable instructions including;
obtaining a desired time vs. indoor temperature set point schedule;
using said proportional-type loop control of said system capacity to dynamically reduce an OFF period of a duty cycle of said compressor, said OFF period being targeted at zero; and
controlling said indoor temperature sensor in a closed loop to a controlled time vs. indoor temperature schedule.
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Accused Products
Abstract
A universal controller for control of air handling and HVAC equipment. The base controller includes a fixed task portion as well as a modular portion for expansion of control features with modules. The fixed task portion is suitable for enclosure or cabinet control. The modular portion enables expansion from basic cabinet control to more complex control schemes. In one embodiment, the base controller is provided in a kit including appurtenances such as variable speed drives that enable proportional-type control of a residential air conditioning system. In another embodiment, a plurality of modules are ganged together in a rotating master/slave arrangement to distribute wear on the respective controlled air conditioning equipment.
164 Citations
6 Claims
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1. A method for proportional control of a thermostatically controlled residential air conditioning system, comprising:
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providing a master control unit comprising a central microprocessor operatively coupled with a fixed task control portion and a modular control portion, said fixed task portion including a temperature measurement circuit operatively coupled with an indoor temperature sensor; said modular control portion being operatively coupled with a first variable speed drive control module for control of a compressor of said residential air conditioning system, wherein said master control unit is configured for proportional-type loop control of a system capacity by manipulating a speed of said compressor with said first variable speed drive control module, said system capacity providing a process variable and said speed of said compressor providing a manipulated variable of said proportional-type loop control; a set of computer-readable instructions stored in non-volatile memory for access by said central microprocessor, said computer-readable instructions including; obtaining a desired time vs. indoor temperature set point schedule; using said proportional-type loop control of said system capacity to dynamically reduce an OFF period of a duty cycle of said compressor, said OFF period being targeted at zero; and controlling said indoor temperature sensor in a closed loop to a controlled time vs. indoor temperature schedule. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification