Research on Hand-Transmitted Vibration Prediction Model of the Handheld EVA Power Tool

The hand-transmitted vibration generated by extravehicular activity (EVA) power tools has an important impact on the health of astronauts and efficient completion maintenance tasks when use EVA for on-orbit maintenance. Based zero-gravity simulation test platform to measure response tool human hands. Given influence length operating rod number non-detaching fastening devices daily exposure wear spacesuit gloves, a second-order polynomial model quadratic cumulative nonlinear are established. experimental results show that is more explanatory predictive data in scope test. R-values palm opisthenar prediction 0.9930 0.9940 respectively, RMSEs 7.973×10−4 m/s2 1.034×10−3 m/s2. can accurately predict hand outside This study provide theoretical reference support using during