【作者】 许俊伟；

【导师】 王立权；

【作者基本信息】 哈尔滨工程大学 ， 机械电子工程， 2011， 硕士

【摘要】 随着机器人技术研究的深入,足式仿生机器人逐渐成为了研究热点。这得益于其在非结构化环境下显现出的运动灵活、稳定性好和行走速度快的性能优势。本课题源自于国家自然科学基金“多足仿生机器蟹复杂地貌行走方法研究”。旨在通过对生物蟹身体结构的分析研究,设计制作出八足仿生机器人本体；并模仿生物蟹的运动机理,研究合理有效的步态规划方法,使八足机器人行走更加平稳高效。本文首先对国内外多足机器人的发展研究概况进行了简要的阐述,分析了多足机器人领域的研究重点和未来技术发展趋势。在此基础上,对八足机器人进行了总体结构的设计,完成了基于弹性转动驱动的模块化关节及圆弧式仿生足端结构设计。并对八足机器人递阶式控制系统硬件电路设计进行了简要的介绍。在结构设计的基础上,对八足机器人的整体和单步行足进行了模型简化分析,利用D-H法建立了摆动步行足的运动学模型,并对八足机器人整体运动学进行了简要的分析；同时,对八足机器人进行了动力学分析,其中包括弹性转动驱动关节动力学分析,摆动足动力学分析和整体动力学分析。运动学和动力学分析为机器人运动机制研究奠定了完整的理论基础。随后,在八足机器人机构特征分析和运动学分析的基础上,应用规范化能量稳定裕度判据得出了八足机器人静态稳定性描述方法。建立了各种行走环境下机器人静态稳定裕度计算的通用数学模型,并分别对水平面、斜面两种典型行走环境下的不同行走方式的稳定性进行了对比分析。接着,结合稳定性研究的成果对八机器人的行走步态进行了深入研究,提出了连续类滚步态,并与传统的双四足步态进行了性能对比分析,得出了连续类滚动步态的优越特性；在横向行走步态研究的基础上,又对纵向行走步态和越障步态进行了研究,将跟导步态的思想应用到了八足机器人纵向行走步态规划方法中。最后,针对八足机器人研究的关键技术进行了实验。其中包括基于"ADAMS"和“Pro/E”联合虚拟仿真的弹性转动驱动关节吸振性能测试实验；基于"dSPACE"和原理样机的连续类滚动步态行走性能实验、纵向跟导步态行走性能实验。通过实验分析,验证了弹性转动驱动关节的良好吸振特性和连续类滚动步态的优良行走性能。更多还原

【Abstract】 With the development of the robot technology, walking bionic robot is gradually becoming the hotspot. This is due to that its advantage of mobility, good stability, fast walking speed in unstructured terrain. This research is originated from "Research on the Multi-legged Bionic Crab-liked Robot’s Walking Method of the Complex Topography", which is funded by National Natural Science Foundation of China. Through the analysis of the crab body structure, the research aims to design and product a eight-legged bionic robot, imitate the crab movement mechanism and find the appropriate gait planning method, which will make eight-legged robot walk more stably and efficiently.Firstly, This thesis presents the multi-legged robot development at home and abroad briefly and the key technologies and the development trend of multi-legged robot. Based on the achievement of the former, the overall structure are proposed and designed, including modular joint based on elastic rotation drive and the arc-type bionic leg-end structure. This thesis also presents the hierarchical control architecture scheme and hardware circuit design of the eight-legged robot briefly. Base on the structure design, though the analysis of the institutional characteristics of the whole eight-legged robot and single leg, both of them are simplified. According to the simplified body model, the kinematics model of the single leg is established with the D-H method, and the whole robot kinematic model is analyzed briefly. Meanwhile, the author carries out the dynamics analysis of the eight-legged robot, including dynamics analysis of the single elastic rotated joints, the single leg and the overall dynamics analysis. Kinematics and dynamics analysis lays a complete theoretical foundation for the study on the eight-legged robot movement mechanism.Moreover, based on mechanism characteristics analysis and kinematics analysis of the eight-legged robot, the author presents the robot static stability description method which is realized by using normalized energy stability margin criterion, and general statically-stable margin mathematical calculation model of the robot are established. And the stability with different walk way was compared on the horizontal and inclined plane respectively.Then, with the result of research on stability, the studies on the robot walking gait are presented. The author puts forward the continuous likeness rolling gait, which are compared with traditional double four-footed gait on performance, proving the superior properties of the continuous likeness rolling gait. Base on the study of the horizontal walking gait, the author also analyses the longitudinal walking gait and obstacle-navigation gait, getting the following guide gait thoughts be applied to the longitudinal walking gait planning of the eight-legged robot.At last, a number of experiments on the key technologies of the eight-legged robot studies are carried out, including vibration performance testing of the elastic rotation drive joints, which is based on "ADAMS" and "Pro/E" virtual simulation; continuous likeness rolling gait’s walking performance testing and longitudinal guiding gait’s walking performance testing; both of which are based on "dSPACE" and prototype. Through the experimental analysis, the author proves the good vibration characteristics of the elastic rotation drive joints, and excellent walking performance of the continuous likeness rolling gait.更多还原