Different kinematics modeling method and analyzing of new lunar rover with eight wheels
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摘要: 为使月球车具有更好的自主导航能力,完成崎岖地形路径规划和崎岖地形可通过性仿真测试,必须建立相应的运动学模型.针对提出的新型八轮移动子系统构型月球车和地形特征,利用不同的坐标系定义和建模方法建立了八轮月球车的3种不同运动学模型:关节机器人D-H坐标建模方法运动模型、平面几何运动学关系和三维几何运动学关系运动学模型.在此基础上对建立的3种运动学模型进行分析对比,提出了3种运动学模型的适用条件和范围.最后指出构建的运动学方程可以作为月球车多轮协调运动控制模型和月球车仿真环境中运动关系的求解器模型.
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关键词:
- 运动学模型 /
- 月球车 /
- Denavit-Hartenberg变换
Abstract: In order to improve lunar rover-s autonomous navigation, path planning and simulation of trafficability in rough terrain, different kinematics models should be made. A new type of lunar rover was presented and three different kinematics models were made based on rover-s mechanical characterization and contact situation between terrain and rover. Using D-H transform modeling method of joint robot, plane geometry kinematics relation and 3D geometry kinematics relation, three types of kinematics models of eight-wheel torsion bar rocker-bogie lunar rover were deduced. Then the comparative analysis on three different kinematics models was produced with their respective application conditions and scope. The new lunar rover-s kinematics model can be as model of multi-wheels coordinated motion control and kinematics solver of rover in simulation environment.-
Key words:
- kinematics model /
- lunar rover /
- Denavit-Hartenberg transform
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