Patent ID: 6150645
Filing Date: 2000-11-21
Classification: B01J,G01N,H05B,Y02B

Abstract:
A system for controlling the application of radiation to a workpiece in a cavity comprising:time tracking means for tracking current times;means for receiving a forward power signal indicative of the applied intensity of said radiation;means for receiving a reflected power signal indicative of the reflected intensity of said radiation;wherein a predetermined .alpha. value is determined by calculating the ratio of the forward power signal received indicative of the applied intensity of said radiation divided by the reflected power signal indicative of the reflected intensity of said radiation received, and wherein a current value of .alpha. corresponds to a current time;means for receiving a temperature signal indicative of the temperature of said workpiece;minimizing means for causing .alpha. to be less than a predetermined .alpha. value;minimizing means in which .alpha. is minimizing by moving a movable launch device, said device being selected from the group consisting of a movable antenna, movable coupling loop, and a movable stub;and a movable volume, said movable volume being selected from the group consisting of a moving short and a moving sidewall;temperature control means for producing an intensity signal indicative of the forward power signal indicative of the applied intensity of said radiation to control said temperature to be substantially equal to a desired temperature;means for determining the physical condition of said workpiece;means for setting desired temperature based on current physical condition of said workpiece.