Abstract
AbstractA method of estimation of wavelength-dependent emissivity of silicon wafers using thermocouple measurements is presented here. A dynamic observer and a persistent excitation of the lamps are required for convergence of the observer's estimates to the actual values of parameters for emissivity approximation. A TI designed RTP equipment and adaptive close-loop temperature control have been used to generate the required persistent excitation. Theory of emissivity estimation by this method has been developed and illustrated by experiment with this 3- zone RTP system.
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