计及舒适性的膝关节外骨骼机器人张弛穿戴系统性能优化及方法研究

Research on performance optimization method of human-machine physical interaction system considering exoskeleton wearing comfort

为了提高穿戴舒适性与承载有效性,本文在提出一种膝关节外骨骼机器人张弛穿戴系统原型及其工作机制解析的基础上,对该系统开展静力学优化综合及其方法研究。首先,本文基于系统虚拟样机模型的构建,构造一种计及应力、变形及受力结点占比等要素的综合穿戴舒适度评价指标;其次,基于系统虚拟样机静力学仿真,结合评价指标,开展多目标遗传优化与铠甲层拓扑构型的局部优化综合;最后,通过模型重建仿真数据证实了该系统具有良好的穿戴舒适性。本研究为后续穿戴系统的承载性能及样机建造提供了理论基础。

In order to improve the wearing comfort and bearing effectiveness of the exoskeleton, based on the prototype and working mechanism analysis of a relaxation wearable system for knee exoskeleton robot, the static optimization synthesis and its method are studied. Firstly, based on the construction of the virtual prototype model of the system, a comprehensive wearable comfort evaluation index considering the factors such as stress, deformation and the proportion of stress nodes was constructed. Secondly, based on the static simulation and evaluation index of system virtual prototype, multi-objective genetic optimization and local optimization synthesis of armor layer topology were carried out.Finally, the model reconstruction simulation data confirmed that the system had good wearing comfort. Our study provides a theoretical basis for the bearing performance and prototype construction of the subsequent wearable system.