TY - GEN
T1 - Analysis of h∞ and h2 optimal design scheme for an electromagnetic damper with shunt resonant circuit
AU - Ao, Wai Kei
AU - Reynolds, Paul
N1 - Publisher Copyright:
© The Society for Experimental Mechanics, Inc. 2015.
PY - 2015
Y1 - 2015
N2 - Electrodynamic actuators and electromagnetic dampers (EMD) are used extensively in mechanical systems. They utilise the electromagnetic induction concept to generate eddy current and Lorentz forces for providing vibration suppression forces. In this research, these principles will be developed for vibration serviceability control of a civil engineering structure. An electrodynamic actuator is used in this research, together with a shunt resonant circuit, an RLC resonant circuit (a simple electronic circuit oscillator) which is needed to cascade with the EMD for closing the circuit and generating electrical damping forces. The EMD is set between the structure and the ground. The kinetic energy of the vibrating structure provides the input energy to activate the EMD. H1 optimisation (minimisation of the maximum response) andH2 optimisation (minimisation of kinetic energy) are used to obtain the vibration suppression performance, which is compared against a conventional tuned mass damper (TMD). The EMD with shunt resonant circuit (EMDS) can have similar dynamic performance, which achieves suppression of resonant vibration amplitude of the primary structure down to two lower amplitude peaks in the frequency domain. Hence, this work shows that the EMDS can in principle achieve satisfactory vibration suppression performance.
AB - Electrodynamic actuators and electromagnetic dampers (EMD) are used extensively in mechanical systems. They utilise the electromagnetic induction concept to generate eddy current and Lorentz forces for providing vibration suppression forces. In this research, these principles will be developed for vibration serviceability control of a civil engineering structure. An electrodynamic actuator is used in this research, together with a shunt resonant circuit, an RLC resonant circuit (a simple electronic circuit oscillator) which is needed to cascade with the EMD for closing the circuit and generating electrical damping forces. The EMD is set between the structure and the ground. The kinetic energy of the vibrating structure provides the input energy to activate the EMD. H1 optimisation (minimisation of the maximum response) andH2 optimisation (minimisation of kinetic energy) are used to obtain the vibration suppression performance, which is compared against a conventional tuned mass damper (TMD). The EMD with shunt resonant circuit (EMDS) can have similar dynamic performance, which achieves suppression of resonant vibration amplitude of the primary structure down to two lower amplitude peaks in the frequency domain. Hence, this work shows that the EMDS can in principle achieve satisfactory vibration suppression performance.
KW - Electromagnetic damper (EMD)
KW - H optimisation
KW - H optimization
KW - RLC resonant circuit
KW - Tuned mass damper
UR - http://www.scopus.com/inward/record.url?scp=84930509589&partnerID=8YFLogxK
U2 - 10.1007/978-3-319-15233-2_21
DO - 10.1007/978-3-319-15233-2_21
M3 - Conference article published in proceeding or book
AN - SCOPUS:84930509589
T3 - Conference Proceedings of the Society for Experimental Mechanics Series
SP - 201
EP - 212
BT - Shock and Vibration, Aircraft/Aerospace, and Energy Harvesting - Proceedings of the 33rd IMAC, a Conference and Exposition on Structural Dynamics, 2015
A2 - Wicks, Alfred
PB - Springer New York LLC
T2 - 33rd IMAC Conference and Exposition on Structural Dynamics, 2015
Y2 - 2 February 2015 through 5 February 2015
ER -