Patent ID: 7232287
Filing Date: 2007-06-19
Classification: F01D,F02C,F04D,F05D,G05B

Abstract:
1. A method of controlling a plurality of devices to respond to a demand, in which: (a) an initial demand instruction is established for each device, representing the device conditions required to achieve the demanded response; (b) the actual condition achieved by each device is detected; (c) a value representing the range of actual conditions is derived from the detected actual conditions, for comparison with a threshold value, wherein the range value is derived as the difference between the maximum and minimum values representing the actual conditions; (d) the result of the comparison is used to establish further demand instructions for independently controlling the devices; and steps (b), (c) and (d) are repeated until the demand is fulfilled, whereby the response of the devices to the demand is coordinated until the demand is fulfilled.