一种飞机机翼支撑平台尺度综合分析

Dimensional Synthesis Analysis of Support Platform on Aircraft Wings

设计了一种由多个2R1T并联机构联合组成的飞机机翼支撑平台,该平台各个并联机构的主动支链采用液压互联的方式实现各动平台协同自适应调节,使其具有更好的翼型匹配度。研究了该并联机构基于多评价指标综合约束的尺度综合方法,建立其在不同约束条件下的评价指标,利用单调性分析法,并以各项性能最优的原则,引入统一的比例系数,确定尺度参数可行域。最后结合算例,以并联机构动平台中心的运动偏差率在最大许可范围内为初始目标,进行多评价指标综合约束,确定该并联机构的最优尺度参数可行域。

A new wing support platform composed of multiple 2R1T parallel mechanisms is designed.The active branch chains of all parallel mechanisms are coordinated by hydraulic interconnection to achieve coordinated adaptive adjustment of all moving platforms,so that they have better airfoil matching degree.The dimensional analysis of the parallel mechanism is carried out based on the comprehensive constraints of multiple evaluation indexes.The evaluation index under different constraint conditions is established using the monotonicity analysis method.According to the principle of optimal performances,a unified ratio coefficient is introduced to determine the feasible domain of the dimensional parameters.Finally,an optimal dimensional parameter feasible region of the parallel mechanism is determined with comprehensive constraints of multiple evaluation indexes and taking the motion deviation rate of the parallel platform center as the initial target in the example.