Abstract
This thesis presents methods of system identification and frequency domain control for industrial heat treatment gas powered box furnaces with an emphasis on conforming with \ac{tus} requirements. While the findings are generically applicable to gas powered heat treatment furnaces information from a specific furnace was used as a source of data and model validation. Two methods of system identification are explored. First is an output error method using production setpoint/output data, and the second is a model derived from thermodynamic principles and furnace geometry. Control systems for each model are designed, and analyzed with respect to temporal performance and global stability.