Hybrid control system for workpiece heating

    公开(公告)号:US11545375B2

    公开(公告)日:2023-01-03

    申请号:US16443043

    申请日:2019-06-17

    Abstract: A system and method of heating a workpiece to a desired temperature is disclosed. This system and method consider the physical limitations of the temperature device, such as time lag, temperature offset, and calibration, in creating a hybrid approach that heats the workpiece more efficiently. First, the workpiece is heated using open loop control to heat the workpiece to a threshold temperature. After the threshold temperature is reach, a closed loop maintenance mode is utilized. In certain embodiments, an open loop maintenance mode is employed between the open loop warmup mode and the closed loop maintenance mode. Additionally, a method of calibrating a pyrometer using a contact thermocouple is also disclosed.

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