Browse > Article
http://dx.doi.org/10.12989/sss.2011.8.5.449

Influence of time delay and saturation capacity to the response of controlled structures under earthquake excitations  

Pnevmatikos, Nikos G. (Department of Civil Infrastructure Works, Faculty of Technological Application, Technological Educational Institution of Athens)
Gantes, Charis J. (Department of Civil Infrastructure Works, Faculty of Technological Application, Technological Educational Institution of Athens)
Publication Information
Smart Structures and Systems / v.8, no.5, 2011 , pp. 449-470 More about this Journal
Abstract
During the last thirty years many structural control concepts have been proposed for the reduction of the structural response caused by earthquake excitations. Their research and implementation in practice have shown that seismic control of structures has a lot of potential but also many limitations. In this paper the importance of two practical issues, time delay and saturation effect, on the performance of controlled structures, is discussed. Their influence, both separately and in interaction, on the response of structures controlled by a modified pole placement algorithm is investigated. Characteristic buildings controlled by this algorithm and subjected to dynamic loads, such as harmonic signals and actual seismic events, are analyzed for a range of levels of time delay and saturation capacity of the control devices. The response reduction surfaces for the combined influence of time delay and force saturation of the controlled buildings are obtained. Conclusions regarding the choice of the control system and the desired properties of the control devices are drawn.
Keywords
structural control; time delay; saturation control; pole placement; structural dynamics; earthquake engineering;
Citations & Related Records

Times Cited By Web Of Science : 0  (Related Records In Web of Science)
Times Cited By SCOPUS : 0
연도 인용수 순위
  • Reference
1 Abdel Rohman, M. (1987), "Time delays effects on actively damped structures", J. Eng. Mech. - ASCE, 113(11), 1709-1719.   DOI   ScienceOn
2 Agarwal, A.K., Fujino, Y. and Bhartia, B. (1993), "Instability due to time delay and its compensation in active control of structures", Earthq. Eng. Struct. D., 22(3), 211-224.   DOI
3 Agarwal, A.K. and Yang, J.N. (1997), "Effect of fixed time delay on stability and performance of actively controlled civil engineering structures", Earthq. Eng. Struct. D., 26(11), 1169-1185.   DOI   ScienceOn
4 Agarwal, A.K. and Yang, J.N. (2000), "Compensation for time delay for control of civil engineering structures", Earthq. Eng. Struct. D., 29 37-62.   DOI   ScienceOn
5 Arfiadi, Y. and Hadi, M.N.S. (2006), "Continuous bounded controllers for active control of structures", Comput. Struct., 84(12), 798-807.   DOI   ScienceOn
6 Asano, K. and Nakagawa, H. (1998), "Active saturation control of hysteretic structures", Comput. Aided Civil Infrastruct. Eng., 13(6), 425-432.   DOI   ScienceOn
7 Cai, G.P., Huang, J.Z., Sun, F. and Yang, S. (2003), "An optimal control method for linear systems with time delay", Comput. Struct., 81(15), 1539-1546.   DOI   ScienceOn
8 Casciati, F., Magonette, G. and Marazzi, F. (2006), Technology of Semiactive Devices and Applications in Vibration Mitigation, Wiley, ISBN: 978-0-470-02289-4.
9 Chu, S.Y., Lin, C.C., Chung, L.L., Chang, C.C. and Lu, K.H. (2008), "Optimal performance of discrete-time direct output-feedback structural control with delayed control forces", Struct. Cont. Health Monit., 15(1), 20-42.   DOI   ScienceOn
10 Connor, J.J. (2003), Introduction to Structural Motion Control, MIT/Prentice Hall Series on civil engineering and Systems Engineering.
11 Dyke, S.J., Spencer, Jr. B.F., Sain, M.K. and Carlson, J.D. (1996), "Experimental verification of semi-active structural control strategies using acceleration feedback", Proceedings of the 3rd international conference on motion and vibration control, vol. III, Chiba, Japan.
12 Lin, P.Y., Roschke, P.N. and Loh, C.H. (2007), "Hybrid base-isolation with magnetorheological damper and fuzzy control", Struct. Cont. Health Monit., 14(3), 384-405.   DOI   ScienceOn
13 Nguyen, T., Jabbari, F. and de Miguel, S. (1998), "Controller designs for seismic excited buildings with bounded actuators", J. Eng. Mech. - ASCE, 124(8), 857-865.   DOI   ScienceOn
14 Pnevmatikos, N.G. and Gantes, C.J. (2007), "Dynamic control analysis (DCA)", Proceedings of the 8th HSTAM International Congress on Mechanics, (Eds. N. Bazeos, D.L. Karabalis, D. Polyzos, D.E. Beskos and J.T., Katsikadelis Patras), Greece, 12-14 July.
15 Pnevmatikos, N.G. and Gantes, C.J. (2007), "Strategy for on-line control of structures against earthquakes", Proceedings of the ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, (Eds, M. Papadrakakis, D.C. Charmpis, N.D. Lagaros and Y. Tsompanakis), Rethymno, Crete, Greece.
16 Pu, J.P. (1998), "Time delay compensation in active control of structures", J. Eng. Mech. - ASCE, 124(9), 1018-1028.   DOI   ScienceOn
17 Sain, P.M., Spencer, Jr. B.F., Sain, M.K. and Suhardjo, J. (1992), "Structural control design in the presence of time delays", Proceedings of the 9th Engineering Mechanics Conference, ASCE, College, Station.
18 Tomasula, D.P., Spencer, Jr. B.F. and Sain, M.K. (1996), "Nonlinear control strategies for limiting dynamic response extreme", J. Eng. Mech. - ASCE, 122(3), 218-229.   DOI
19 Udwadia, F.E. and Phohomsiri, P. (2006), "Active control of structures using time delayed positive feedback proportional control designs", Struct. Cont. Health Monit., 13(1), 536-552.   DOI   ScienceOn
20 Udwadia, F.E., von Bremen, H. and Phohomsiri, P. (2007), "Time-delayed control design for active control of structures: principles and applications", Struct. Cont. Health Monit., 14(1), 27-61.   DOI   ScienceOn
21 Wu, Z. and Soong, T.T. (1996), "Modified bang-bang control law for structural control implementation", J. Eng. Mech. - ASCE, 122, 771-777.   DOI   ScienceOn