Development of a hand-transmitted vibration testing system for simulating a one-sixth-gravity, low-pressure environment

Astronauts using electric space tools for lunar extravehicular activities (EVA) are an important task in the manned lunar landing program. The EVA work is challenging and time-consuming, and the hand-transmitted vibration caused by electric tools can affect the astronauts' work efficiency and even endanger their physical health. Currently, research on ground-based simulation of one-sixth-gravity low-pressure environment hand-transmitted vibration testing equipment is still a blank, and due to the narrow space between the inner layer of the EVA gloves and the palm, the sensor adapter may affect the test accuracy. This study developed a simulated one-sixth-gravity low-pressure environment hand-transmitted vibration testing system and an acceleration sensor based on MEMS technology. A hardware system for hand-transmitted vibration testing was constructed using a vacuum glove box, a low-gravity simulation mechanism, and an acceleration sensor. A software system for hand-transmitted vibration testing was developed using Python to carry out electric space tool hand-transmitted vibration testing, measuring the vibration transmission rate of the palm under different environmental conditions. The results provide an important application foundation for subsequent research on hand-transmitted vibration in simulated lunar surface environments.