面向出舱活动的典型功能操作肌肉激活预测

Predicting Muscle Activation in Typical Functional Tasks of EVA

面向出舱活动中航天员肌肉状态和体力负荷的风险评估,为了实现航天员肌肉激活的预测,开展了着常服和舱外服两种工况下不同操作位置的推、拉、提、压共8组典型功能操作实验,测试航天员最大施力能力的同时采集了肱二头肌长头、肱三头肌外侧头和三角肌前束的肌电信号。提出基于人-舱外服耦合运动生物力学模型预测着舱外服人体的肌肉激活,并预测了两种工况下8组典型功能操作的肌肉激活。通过预测结果和积分肌电值的相关性分析,验证了模型预测的有效性,为研究人-舱外服真实交互方式提供了新的方法学思路,对肌肉激活的预测为出舱活动任务规划提供了生理学依据。

This paper aims to predict the muscle activation of astronauts in EVA for ergonomic assessment of their physical states. Typical functional tasks such as pull,push,press and lift in various places were conducted by 9 participants in both spacesuit-unsuited and suited conditions to collect maximum force and s EMG( surface electromyography) of RT Biceps BR.,LT LAT. Triceps and RT ANT. Deltoid. Muscle activations in these functional tasks were predicted based on the proposed framework of human-spacesuit integrated biomechanical modeling. Model predictions were validated through the Pearson correlation analysis between predicted muscle activations and measured s EMG. The proposed human-spacesuit integrated biomechanical modeling offers a new insight into human-spacesuit interaction and physiological bases for EVA planning.