Multi-Criterion Optimization of a Pneumatic Vibroinsulation System

Abstract

Vibration insulation becomes more important as the importance of nanotechnology increases. Air springs have shown to offer a suitable technical solution with respect to vertical vibration, however, they show only low damping in horizontal direction. The paper introduces physical and mechanical models describing the dynamics of such air springs, where validation and identification is based on multiple types of excitation. Based on the derived model, design optimization is performed for additional air springs acting in horizontal direction. Three criteria are formulated describing both the insulation performance with respect to external excitation and disturbances by initial conditions. A multi-criterion optimization concept is used to account for these multiple design goals simultaneously.