Approach for Vertical Loading Error Compensation for Wheel Test Bench of Lunar Rover Vehicle

被引:0
|
作者
Gao, Haibo [1 ]
Liang, Zhongchao [1 ]
Ding, Liang [1 ]
Deng, Zongquan [1 ]
机构
[1] Harbin Inst Technol, State Key Lab Robot & Syst, Harbin 150080, Peoples R China
来源
JOURNAL OF THE CHINESE SOCIETY OF MECHANICAL ENGINEERS | 2013年 / 34卷 / 06期
基金
中国国家自然科学基金;
关键词
Lunar roving vehicle; Terramechanics; Wheel testing bench; Torsion spring loading;
D O I
暂无
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
A lunar roving vehicle (LRV) is the key for manned lunar explorations and for supporting a lunar base. It is therefore necessary for the maneuverability and adaptability to the environment of its wheels to be known during the design phase. Toward this end, it is essential to build a test bench for LRV wheels. A torsion spring loading mechanism with a parallelogram linkage instead of a counterweight enables continuous vertical loading of the testing wheel and reduces the inertia and start-up time of the testing wheel. However, the vertical load during transition from the initial stationary state to the stable movement state contains an error because of slip sinkage. The variation of sinkage leads to variations in the vertical displacement of the testing wheel, causing changes in the torque of the torsion spring and in turn causing vertical loading errors in the wheel. In this study, the vertical loading error of a testing wheel loaded by a torsion spring was analyzed, and an error compensation algorithm was deduced theoretically. Finally, highly accurate vertical loading of the wheel test bench for an LRV was realized. This should lay the foundation for future wheel experiments of LRVs.
引用
收藏
页码:561 / 569
页数:9
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