Affiliation:
1. Mechanical Engineering Department, The Pennsylvania State University, University Park, PA 16802
Abstract
The goal of damage-mitigating control is to achieve high performance of operating machinery without overstraining the mechanical structures and the potential benefit is an increase in the component service life with no significant loss of performance. This paper presents the design of a test apparatus, the synthesis of a damage-mitigating control system, and the results of experimentation where the objective is to demonstrate the concept of fatigue damage reduction as an extension of multivariable robust feedback control. The test apparatus is built upon a three-degree-of-freedom, two-input three-output mechanical structure. The methodology of the damage-mitigating control synthesis is built upon the principles of: (i) frequency-domain identification of the plant dynamics and modeling of uncertainties in the state-space setting; and (ii) robust control based on the H∞ approach by taking both plant dynamic performance and material degradation of structural components into consideration. Case studies on the test apparatus indicate that fatigue life of specimens can be substantially extended with no appreciable degradation in the dynamic performance of the mechanical system.
Subject
Computer Science Applications,Mechanical Engineering,Instrumentation,Information Systems,Control and Systems Engineering
Reference18 articles.
1. Bayard, D. S., 1992a, “Multivariable Frequency Domain Identification Via 2-Norn Minimization,” Proceedings of the American Control Conference, Vol. 2, 1992, pp. 1253–1257.
2. Bayard, D. S., 1992b, “Statistical Plant Set Estimation Using Schroeder-Phased Multisinusoidal Input Design,” Proceedings of the American Control Conference, Vol. 4, 1992, pp. 2988–2995.
3. Bayard, D. S., 1993a, “Frequency Domain Approach to Identification, Uncertainty Characterization And Robust Control Design,” Proceedings of the IEEE Conference on Decision and Control, Vol. 3, 1993, pp. 2266–2271.
4. Bayard, D. S., 1993b, “Multivariable State-Space Identification in the Delta and Shift Operators: Algorithms And Experimental Results,” Proceedings of the American Control Conference 1993, Vol. 3, pp. 3038–3042.
5. Bamieh
B. A.
, and PearsonJ. B., 1992, “A General Framework for Linear Periodic Systems with Applications to H∞ Sampled-Data Control,” IEEE Transactions on Automatic Control, Vol. 37, No. 4, April, pp. 418–435.
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