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Monday, July 8 • 17:30 - 17:50
ATTITUDE CONTROL FOR AIR SPRING ISOLATION SYSTEM WITH ELECTROMAGNETIC ACTUATOR

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Active-passive isolation technology is applied in ship equipment to achieve higher isola-tion efficiency both in broadband vibration and low-frequency harmonic vibration. A hy-brid vibration isolation system (HVIS) is designed with active-passive vibration isolators, which consist of electromagnetic actuator and air spring. In order to obtain expected effect for vibration line-spectra isolation, the air gap of actuator need maintain in a fairly small range. As low and nonlinear stiffness characteristics, the air gap is more susceptible to some disturbance, such as temperature variation and air spring pressure change. So how to control attitude of the isolation system to ensure air gap in appropriate range is a challenge for designers. In this paper, the factors affecting air gap are analyzed, and an attitude con-trol algorithm is designed to achieve high control precision and stability. The experiment results show the algorithm meet the air gap requirement for electromagnetic actuator.

Moderators
avatar for Alain Berry

Alain Berry

Professor, Université de Sherbrooke
avatar for Philippe-Aubert Gauthier

Philippe-Aubert Gauthier

Professor, Groupe Acoustique Université de Sherbrooke, Université de Sherbrooke

Authors

Monday July 8, 2019 17:30 - 17:50 EDT
Westmount 6
  T02 Act. noise & vib. cntrl., RS01 Active cntrl of snd & vibr