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2861 |
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Thursday, September 29, 2011, Saal B2.2 4:25 PM Process Diagnostics, Sensors & Controls 2 |
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Plasma spray control design for achieving TBC production and coating quality objectives |
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Michael Gevelber / Boston University
Manufacturing Engineering, USA Michael Cannamela / Boston University, Mechanical Engineering, USA Sean DeLeo/ Boston University, Mechanical Engineering, USA Donald Wroblewski/ Boston University, Mechanical Engineering, USA Soumendra Basu/ Boston University, Mechanical Engineering, USA Matthew Tuttle*/ Cyber Materials LLC, USA Dennis Radgowski/ Cyber Materials LLC, USA |
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This paper examines the integrated control design and sensor requirements to achieve improved plasma spray capabilities in a manufacturing context. Important objectives include achieving both production objectives (deposition rate, deposition efficiency, and compensating process variation) as well as achieving the desired coating structure and properties. Different torch architectures are evaluated in terms of the fundamental input-output variations that pose requirements for developing an appropriate control strategy. To meet the multiple plasma spray objectives, a hierarchy of control objectives is proposed, and implemented both in terms of an operator based and real-time control strategy. Performance in terms of achieved coating structure and deposition rate is evaluated, as well as the relationship to sensor capabilities. |