Data processing: structural design – modeling – simulation – and em – Modeling by mathematical expression
Reexamination Certificate
2003-12-09
2009-11-24
Rodriguez, Paul L (Department: 2123)
Data processing: structural design, modeling, simulation, and em
Modeling by mathematical expression
Reexamination Certificate
active
07623993
ABSTRACT:
A method to provide active noise control to reduce noise and vibration in reverberant acoustic enclosures such as aircraft, vehicles, appliances, instruments, industrial equipment and the like is presented. A continuous-time multi-input multi-output (MIMO) state space mathematical model of the plant is obtained via analytical modeling and system identification. Compensation is designed to render the mathematical model passive in the sense of mathematical system theory. The compensated system is checked to ensure robustness of the passive property of the plant. The check ensures that the passivity is preserved if the mathematical model parameters are perturbed from nominal values. A passivity-based controller is designed and verified using numerical simulations and then tested. The controller is designed so that the resulting closed-loop response shows the desired noise reduction.
REFERENCES:
patent: 6208739 (2001-03-01), Venugopal et al.
Kelkar and Joshi; Robust passification via optimal sensor blending and control allocation; Jun. 2, 1999-Jun. 4, 1999; Proceedings of the American Control Conference vol. 1; ISBN: 0-7803-4990-3; pp. 278-282.
Son et al.; Stabilization of linear systems via low-order dynamic outputfeedback: a passification approach; Proceedings of the 2000 American Control Conference, vol. 6; pp. 3822-3826.
Pota, H. R., Reza Moheimani, S. O., and Smith, M., Dec. 7-10, 1999, “Resonant controllers for flexible structures,” in Proceedings of IEEE International 38th Conference on Decision and Control, pp. 631-636.
A.G. Kelkar and S.M. Joshi. Robust passification and control of non-passive systems. In Proceedings of the American Control Conference, Philadelphia, PA, Jun. 24-26, 1998, pp. 3133-3137.
Jeongho Hong, James C. Akers, Ravinder Venugopal, Miin-Nan Lee, Andrew G. Sparks, Peter D. Washabaugh, and Dennis S. Bernstein. Modeling, identification, and feedback control of noise in an acoustic duct. IEEE Transactions on Control Systems Technology, 4(3):P283-291, May 1996.
A.G. Kelkar and S.M. Joshi. Robust control of non-passive systems via passification. In Proceedings of the American Control Conference, Albuquerque, NM Jun. 4-6, 1997.
H.R. Pota and A.G. Kelkar. Modelling and control of acoustic ducts. ASME Journal of Vibration and Acoustic, 123(1):2-10, Jan. 2001.
A.G. Kelkar and S.M. Joshi. An approach to acoustic noise control using passivity techniques. In IMECE, New York, Dec. 2001, to be presented.
A.G. Kelkar, Y. Mao and S.M. Joshi. LMI-based passification for control of non-passive systems. In 2000 American Control Conference (invited paper), pp. 1271-1275, Chicago, IL, Jun. 28-30, 2000.
S.M. Joshi and A.G. Kelkar. Passivity-based robust control of systems with redundant sensors and actuators. International Journal of Control, 74(5):474-481, Mar. 2001.
Y. Mao, A.G. Kelkar, and S.M. Joshi. “Synthesis of optimal constant-gain positive real controllers”, Proceedings of the 1999 American Control Conference, San Diego, CA, Jun. 2-4, 1999.
A.G. Kelkar and S.M. Joshi. Robust passification and control of non-passive systems. In Proceedings of the American Control Conference, Philadelphia, PA, Jun. 24-26, 1998.
News Releases: Iowa State University; News about Science, Technology and Engineering at Iowa State University; Title—“Sensing noise and canceling it”; Apr. 2001; 3 pages.
Fang et al.; Modelling and Control of Acoustic-Structure Interaction in 3-D Enclosures; publication; Dec. 10-13, 2002; 6 pages, vol. 1; pp. 873-878; Proceedings of the 41st IEEE Conference on Decision and Control.
Kelkar et al.; Robust Bradband Control of Acoustic Duct; publication; Dec. 2000; 6 pages, pp. 4485-4490; Proceedings of the 39th IEEE Conference on Decision and Control; Sydney, Australia.
Pota et al.; On Perfect Acoustic Noise Cancelling Controllers; publication; Jun. 2000; 5 pages, pp. 3018-2022; Proceedings of the American Control Conference; Chicago, Illinois.
Pota et al.; Analysis of Perfect Noise Cancelling Controllers; publication; Sep. 25-27, 2000; 6 pages, pp. 267-272; Proceedings of the 2000 IEEE International Conference on Control Applications; Anchorage, Alaska.
Kelkar et al.; Robust Broadband Control of Acoustic Duct; publication; Sep. 25-27, 2000; 6 pages, pp. 273-278; Proceedings of the 2000 IEEE International Conference on Control Applications; Anchorage, Alaska.
Joshi Suresh M.
Kelkar Atul
Iowa State University & Research Foundation, Inc.
Ochoa Juan C
Reinhart Boerner Van Deuren P.C.
Rodriguez Paul L
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