Patent ID: 9209057
Filing Date: 2015-12-08
Classification: H01L

Abstract:
1. A temperature control apparatus, comprising: a plurality of temperature detection elements, each of the temperature detection elements being positioned at different positions; a failure detection unit configured to detect whether one of the temperature detection elements is broken; a heating unit provided with a plurality of heating elements, each of the heating elements being positioned at different positions, and configured to heat objects to be heated; and a control unit configured to adjust a heating rate of each of the plurality of heating elements in the heating unit, based on temperature detection values detected at the plurality of temperature detection elements, and configured to control temperatures of the objects to be heated, wherein, the control unit is further configured to estimate a temperature for each of the temperature detection elements and configured to control the temperatures of the objects to be heated based on the estimated temperatures, wherein a first Kalman filter is prepared using the temperature detection values, from which a first temperature detection value corresponding to a selected temperature detection element among the temperature detection elements is excluded, when none of the temperature detection elements are broken, and wherein the prepared first Kalman filter and temperature detection values are used by the control unit to estimate the temperature of each of the temperature detection elements when the selected temperature detection element is broken.