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Missouri University of Science and Technology
Axial loads<br />Friction stir welding<br />Kalman filtering
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Filtering, Modeling, And Control Of Axial Force Signals In Friction Stir Welding Processes, Thomas Michael Oakes
Filtering, Modeling, And Control Of Axial Force Signals In Friction Stir Welding Processes, Thomas Michael Oakes
Masters Theses
"In Friction Stir Welding Processes, good contact between tool and work piece can be accomplished through control of the axial force signals. A method of stochastic modeling is introduced and used in conjunction with a Kalman filter to develop empirical static and dynamic models relating the axial force to input process parameters. The filtering method reduces signal variance by an order of magnitude. The models are experimentally validated and used to design and implement a general tracking controller with disturbance rejection for axial force control. Online control of the axial force is experimentally validated for bead-on-plate welds using a 6061 …