Vibration Isolator Design for Space Application Based on Multiobjective Optimization Method

Abstract:

A multiobjective optimization based vibration isolator design for space application is described. It is common to use passive isolator and isolate the platform noise in space applications. The design of a passive isolator involves a trade-off between the resonant peak reduction and the high frequency attenuation. The equation of motion and transfer function model for single-stage and two-stage connector model is derived by using basic principle. The multiobjective optimization model is proposed, where the design variables are the damping coefficients and stiffness coefficients, the objective functions are the resonant peak reduction and the high frequency attenuation, and the constraints are the natural frequency of the connector. The multiobjective optimization problems for the design of the passive isolator are solved by using the multiobjective evolutionary algorithm based on decomposition (MOEA/D). The Pareto front obtained can provide multiple candidate solutions for the designer. The method is effective for the design process of the passive isolator.

• Periodical: Applied Mechanics and Materials (Volumes 365-366)
• Pages: 77-81
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.365-366.77
• Online since: August 2013
• Authors: Zhi Wei Feng, Qian Gang Tang, Qing Bin Zhang
• Keywords: Mechanism Design, Multi-Objective Optimization (MOP), Spacecraft, Vibration Isolation

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