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Active Vibration Control of Composite Shell Structure using Modal Sensor/Actuator System

Kim, Seung-Jo;Hwang, Joon-Seok;Mok, Ji-Won

  • Published : 2006.06.30

Abstract

The active vibration control of composite shell structure has been performed with the optimized sensor/actuator system. For the design of sensor/actuator system, a method based on finite element technique is developed. The nine-node Mindlin shell element has been used for modeling the integrated system of laminated composite shell with PVDF sensor/actuator. The distributed selective modal sensor/actuator system is established to prevent the effect of spillover. Electrode patterns and lamination angles of sensor/actuator are optimized using genetic algorithm. Continuous electrode patterns are discretized according to finite element mesh, and orientation angle is encoded into discrete values using binary string. Sensor is designed to minimize the observation spillover, and actuator is designed to minimize the system energy of the control modes under a given initial condition. Modal sensor/actuator for the first and the second mode vibration control of singly curved cantilevered composite shell structure are designed with the method developed on the finite element method and optimization. For verification, the experimental test of the active vibration control is performed for the composite shell structure. Discrete LQG method is used as a control law.

Keywords

Composite shell structure;Active vibration control;Sensor/Actuator System;Finite element method;Genetic Algorithm

References

  1. Balas, M.J., 'Feedback Control of Flexible Systems', IEEE Transactions on Automatic Control, AC-23, No. 4, pp. 673-679, 1978
  2. Balas, M.L 'Feedback Control of Flexible Systems', IEEE Transactions on Automatic Control, AC-23, No. 4, pp. 673-679, 1978
  3. S.J. Kim, J.S. Hwang, J. Kim, 'System design of distributed modal transducer by adjustingspatial gain distribution', SPIE's 6th International Symposium on Smart Structures and Materials, Newport Beach, California, U.S.A., March 2, 1999
  4. Zhou,Y. and Tzou, B.S., 'Active control of nonlinear piezoelectric circular shallow spherical shells', International Journal of Solids and Structures, 37, pp.1663-1677, 2000 https://doi.org/10.1016/S0020-7683(98)00309-6
  5. Saravan, C., Genesan N. and Ramamurti, V., 'Analysis of active damping in composite laminate cylindrical shells of revolution with skewed PVDF sensor/actuators', Composite Structures, 48, pp. 305- 318, 2000 https://doi.org/10.1016/S0263-8223(99)00118-X
  6. Suleman, A., 'Adaptive composite modelling and application in panel flutter and noise suppression', Computers and Structures, 76, pp.365-378, 2000 https://doi.org/10.1016/S0045-7949(99)00177-7
  7. S.J. Kim, J.S. Hwang, J.W. Mok, 'Sensor!Actuator Design for Active VibrasionSystem design of distributed modal transducer by adjusting spatial gain distribution', SPIE's 7th International Symposium on Smart Structures and Materials, Newport Beach, California, U.S.A., March 2, 1999
  8. Cook, R.D., Malkus, D.S. and Plesha, M.E., Concepts and application of finite element analysis, John wiley & Sons, New York, 1989
  9. Lee, C.K., 'Theory of laminated piezoelectric plates for the design of distributed sensors/actuators: part I: Governing equations and reciprocal relationships', Journal of Acoustic Society of America, 87, No. 3, pp. 1144-1158 https://doi.org/10.1121/1.398788
  10. Meirovitch, L.. and Baruh, H., 'The Implementation of Modal Filters for Control of Structures', Journal of Guidance and Control, 8, No. 6, pp.707-716, 1985 https://doi.org/10.2514/3.20045