title: Active damping control unit using a small scale proof mass electrodynamic actuator.
abstract: This paper presents a study on the design and use of a small scale proof mass electrodynamic actuator, with a low mounting resonance frequency, for velocity feedback control on a thin rectangular panel. A stability-performance formula is derived, which can be effectively used to assess the down scaling effects on the stability and control performance of the feedback loop. The design and tests of a velocity feedback loop with a prototype small scale proof mass actuator are also presented. When a feedback control having a gain margin of about 6 dB is implemented, so that there is little control spillover effect around the fundamental resonance of the actuator, reductions of vibration between 5 dB and 10 dB in the frequency band between 80 Hz and 250 Hz have been measured at the control position.
authors.affiliation: Institute of Sound and Vibration Research, University of Southampton, Southampton SO17 1BJ, United Kingdom. cgd@isvr.soton.ac.uk
authors.forename: Cristóbal
authors.initials: C
authors.lastname: González Díaz
authors.forename: Christoph
authors.initials: C
authors.lastname: Paulitsch
authors.forename: Paolo
authors.initials: P
authors.lastname: Gardonio
mesh_terms: D000162:Acoustics / Q000295:instrumentation; D000535:Aluminum / Q000737:chemistry*; D004867:Equipment Design; D008422:Materials Testing; D008962:Models, Theoretical; D009038:Motion; D009624:Noise, Transportation / Q000517:prevention & control; D015203:Reproducibility of Results; D013016:Sound; D014186:Transportation / Q000295:instrumentation; D014732:Vibration
chemical_list: D000535:Aluminum