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Damage-mitigating control of mechanical structures: experimental verification of the concept

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3 Author(s)
Tangirala, S. ; Pennsylvania State Univ., University Park, PA, USA ; Ray, A. ; Carpino, Marc

The concept of damage-mitigating control is built upon the two disciplines of control systems and mechanics of materials, and its goal is to achieve optimized trade-off between the system performance and structural durability of the plant under control. Simulation studies have shown a substantial reduction in the damage accumulation in the critical components of a rocket engine with no significant loss of performance. This paper reports experimental verification of the damage-mitigating control concept on a laboratory testbed which is a two-degree-of-freedom mechanical system excited by a computer-controlled shaker table. Test results demonstrate: (i) the important feature of optimized damage-mitigating control by extending fatigue life up to three and one half times with no significant performance degradation; and (ii) close agreement between the analytical prediction of damage and experimental observations

Published in:

American Control Conference, Proceedings of the 1995  (Volume:6 )

Date of Conference:

21-23 Jun 1995

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