Multi-objective optimization control of a magnetorheological-electromagnetic composite six-degree-of-freedom vibration isolation platform
磁流变-电磁复合六自由度隔振平台的多目标优化控制

摘要

针对高精度设备在复杂环境下运行时易受多方向扰动影响的问题，提出一种基于磁流变-电磁复合驱动的六自由度隔振平台多目标优化控制方法。该平台利用磁流变阻尼器的快速可调特性与电磁驱动的高响应性能，实现对平移与转动六个自由度的主动与半主动协同隔振。建立系统动力学模型，结合多目标优化算法，对隔振性能、能耗与控制稳定性进行综合权衡。通过仿真与实验验证，优化控制策略在宽频域内显著降低振动传递率，并在能耗与控制精度之间取得平衡。研究结果为高端精密仪器、航空航天设备及大型机电系统的隔振设计提供了新思路。

Abstract

Aiming at the problem that high-precision equipment is susceptible to multi-directional disturbances when operating in complex environments, this paper proposes a multi-objective optimization control method for a six-degree-of-freedom vibration isolation platform based on magnetorheological-electromagnetic composite drive. The platform utilizes the fast adjustable characteristics of magnetorheological dampers and the high response performance of electromagnetic drives to realize active and semi-active cooperative vibration isolation for six degrees of freedom (translation and rotation). A system dynamics model is established, and a multi-objective optimization algorithm is combined to comprehensively balance vibration isolation performance, energy consumption, and control stability. Through simulation and experimental verification, the optimized control strategy significantly reduces the vibration transmissibility in a wide frequency domain and achieves a balance between energy consumption and control accuracy. The research results provide new ideas for the vibration isolation design of high-end precision instruments, aerospace equipment, and large electromechanical systems.