Patent ID: 7272452
Filing Date: 2007-09-18
Classification: G05B

Abstract:
1. A distributed automation system for controlling components in a heating ventilation and air conditioning system comprising: a controller with a plurality of data processing components including at least one constrained input proportional-integral-derivative component and at least one unconstrained input proportional-integral-derivative component, each of the plurality of data processing components having a first input and an output and operable to process data input to the data processing component, a room temperature set point device having an output operably connected to the second input of the at least one constrained input proportional-integral-derivative component, the room temperature set point device operable to apply an offset to a temperature set point signal in response to a received signal and to output the offset temperature set point signal; and a user interface operable to operably connect the output of at least one of the plurality of data processing components to the first input of another of the plurality of data processing components.