Robotic drilling tests in simulated lunar regolith environment

2021 ◽  
Author(s):  
Tao Zhang ◽  
Yinliang Zhang ◽  
Kun Xu ◽  
Xilun Ding ◽  
Hongyu Wei ◽  
...  
Keyword(s):  
Lunar Regolith ◽  
Robotic Drilling

Bone Density Classification Method for Robotic Drilling System

2013 ◽  
Vol 133 (3) ◽  
pp. 328-334 ◽  
Author(s):  
Koyo Yu ◽  
Yuki Saito ◽  
Yusuke Kasahara ◽  
Hiromasa Kawana ◽  
Shin Usuda ◽  
...  
Keyword(s):  
Bone Density ◽  
Classification Method ◽  
Robotic Drilling ◽  
Drilling System

THERMAL CONDUCTIVITY IMPROVEMENT OF LUNAR REGOLITH SIMULANT

2018 ◽  
Author(s):  
Chao Wang ◽  
Xiaochen Lu ◽  
Rong Ma ◽  
Wei Yao
Keyword(s):  
Thermal Conductivity ◽  
Lunar Regolith ◽  
Lunar Regolith Simulant

NEWLY FORMED IMPACTS CHURNING THE LUNAR REGOLITH

2018 ◽  
Author(s):  
Emerson Speyerer ◽  
◽  
Reinhold Povilaitis ◽  
Mark S. Robinson ◽  
Brett W. Denevi
Keyword(s):  
Lunar Regolith

LITHOLOGIC DIVERSITY WITHIN LUNAR REGOLITH BRECCIA METEORITE NORTHWEST AFRICA 8783: CLASTS 3 AND 6

2020 ◽  
Author(s):  
Cecillia Utterback ◽  
◽  
Madi Hall ◽  
Erin M. Recchuiti ◽  
Amy L. Fagan
Keyword(s):  
Lunar Regolith ◽  
Northwest Africa

scholarly journals A Variable Parameter Ambient Vibration Control Method Based on Quasi-Zero Stiffness in Robotic Drilling Systems

Machines ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 67
Author(s):  
Laixi Zhang ◽  
Chenming Zhao ◽  
Feng Qian ◽  
Jaspreet Singh Dhupia ◽  
Mingliang Wu
Keyword(s):  
Vibration Control ◽  
Vibration Isolation ◽  
Control Method ◽  
Control Strategies ◽  
Equations Of Motion ◽  
Variable Parameter ◽  
Harmonic Balance Method ◽  
Variable Stiffness ◽  
Ambient Vibration ◽  
Robotic Drilling

Vibrations in the aircraft assembly building will affect the precision of the robotic drilling system. A variable stiffness and damping semiactive vibration control mechanism with quasi-zero stiffness characteristics is developed. The quasi-zero stiffness of the mechanism is realized by the parallel connection of four vertically arranged bearing springs and two symmetrical horizontally arranged negative stiffness elements. Firstly, the quasi-zero stiffness parameters of the mechanism at the static equilibrium position are obtained through analysis. Secondly, the harmonic balance method is used to deal with the differential equations of motion. The effects of every parameter on the displacement transmissibility are analyzed, and the variable parameter control strategies are proposed. Finally, the system responses of the passive and semiactive vibration isolation mechanisms to the segmental variable frequency excitations are compared through virtual prototype experiments. The results show that the frequency range of vibration isolation is widened, and the stability of the vibration control system is effectively improved without resonance through the semiactive vibration control method. It is of innovative significance for ambient vibration control in robotic drilling systems.

Sign in / Sign up

Export Citation Format

Share Document