共查询到19条相似文献,搜索用时 406 毫秒
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为了进一步提高仿人机器人步行时的稳定性,通过对人类步行的研究,并从两足步行机的两步步态规划方法中得到启发,对仿人机器人步行也进行类似的两步规划,但由于结构上的不同,仿人机器人中采用加入上肢运动补偿的方式实现平衡.规划仿人机器人的运动姿态,然后根据零力矩点必须落在稳定区域的原则,对仿人机器人的上肢运动轨迹进行求解,通过这种加入上肢补偿的两步规划来实现仿人机器人的稳定步行.从实验结果可以看出,采用这种两足步态规划方法,在仿人机器人两足步行时,可以使机器人上肢与下肢协调运动,从而提高了步行的稳定性. 相似文献
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从仿生学角度分析了人体的步行运动规律,提出了一种基于人体运动规律的仿人机器人步态参数设定方法.首先对人体步行运动数据进行捕捉并分析,得出人体各步态参数间的函数关系,以人体步行相似性作为评价指标,提出仿人机器人步态参数的设定方法.其次,通过分析人体在步行过程中的补偿支撑脚偏航力矩的基本原理,提出了基于双臂及腰关节协调运动的仿人机器人偏航力矩补偿算法,以提高仿人机器人行走的稳定性.最后通过仿真及实验验证了所提出的步态规划方法的正确性及有效性. 相似文献
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仿人机器人复杂动态动作设计及相似性研究 总被引:5,自引:0,他引:5
提出了一种基于人体运动的考虑节奏相似性的仿人机器人复杂动态动作设计方法. 首先, 把人体的运动分割成基本动作段, 给出了运动学约束, 讨论了复杂动态动作的稳定性调节方法. 然后, 提出了考虑运动节奏的仿人机器人模仿人体动作的相似性函数, 并给出了满足运动学约束和动力学稳定性、具有高相似性的运动轨迹求解方法. 最后, 通过在仿人机器人 BHR-2 上进行中国功夫``刀术'实验验证了该方法的有效性. 相似文献
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首先设计了两足步行机器人的本体结构,并选择舵机作为驱动源。然后,基于广义坐标对该机器人进行了运动学建模,该方法运算简便、直观易懂。重点讨论了动态步行的算法设计,详细分析了基于零力矩点的仿人机器人动态步行运动规划方法。结合机器人的几何约束和运动约束,推导机器人参数化步态设计的推导公式,机器人步态的参数化设计大大方便了机器人的运动学和动力学分析。最后,介绍了运动规划的实验设计,并对关节调试作了总结和分析,指出了存在的问题和解决的办法。 相似文献
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基于ADAMS的双足机器人拟人行走动态仿真 总被引:3,自引:2,他引:1
在双足机器人HEUBR_1的设计中,下肢采用了一种新的串并混联的仿人结构,并在足部增加了足趾关节.为验证该仿人结构设计的合理性及拟人步态规划的可行性,在ADAMS虚拟环境中建立了双足机器人HEUSR_1的仿真模型.通过拟人步态规划生成了运动仿真数据,在ADAMS虚拟环境中实现了具有足趾运动的拟人稳定行走,经仿真分析,获得了双足机器人HEUBR_1拟人行走步态下的运动学和动力学特性,仿真结果表明:双足机器人HEUBR_1的串并混联的仿人结构设计能够满足行走要求,且拟人步态规划方法可行,有足趾运动的拟人行走具有运动平稳、能耗低、足底冲击力小的特点.稳定行走的仿真步态数据可为下一步双足机器人HEUBR_1样机行走实验提供参考数据. 相似文献
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This paper describes walking control algorithm for the stable walking of a biped humanoid robot on an uneven and inclined
floor. Many walking control techniques have been developed based on the assumption that the walking surface is perfectly flat
with no inclination. Accordingly, most biped humanoid robots have performed dynamic walking on well designed flat floors.
In reality, however, a typical room floor that appears to be flat has local and global inclinations of about 2°. It is important
to note that even slight unevenness of a floor can cause serious instability in biped walking robots. In this paper, the authors
propose an online control algorithm that considers local and global inclinations of the floor by which a biped humanoid robot
can adapt to the floor conditions. For walking motions, a suitable walking pattern was designed first. Online controllers
were then developed and activated in suitable periods during a walking cycle. The walking control algorithm was successfully
tested and proved through walking experiments on an uneven and inclined floor using KHR-2 (KAIST Humanoid robot-2), a test
robot platform of our biped humanoid robot, HUBO. 相似文献
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模拟人的肌肉驱动方式,为双足机器人HEUBR-1 设计了二自由度的空间并联机构,并将其应用于双
足机器人HEUBR-1 下肢关节,实现了一种新的串并混联的仿人下肢结构.在HEUBR-1 的足部增加了足趾关节,使
机器人能够模拟人的行走方式,实现真正的拟人步态行走.阐述了双足机器人HEUBR-1 稳定拟人行走的关键性技
术,提出了综合稳定性判据,分析了拟人的多种步态.通过拟人行走步态实验分析,验证了双足机器人HEUBR-1 串
并混联的仿人结构的设计合理性及拟人步态分析的准确性. 相似文献
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小型仿人双足机器人是一种机电一体化装置,完成其结构设计、样机制作以及动作编排需要进行系统探索。依托机器人基础知识和专业技术,对该机器人进行了详尽分析,根据仿生学目标进行了机器人自由度分配,且依据研发任务选择了机器人驱动元件,进而使用solidworks软件进行了机器人结构造型设计,并完成了实验样机的结构组装和系统调试。设计了一个机器人“舞蹈”程序,该程序采用分层软件架构方法,设计了驱动层、应用层和执行层,使机器人软件系统的各个部分分工明确,且使机器人在跳舞过程中能够保持各部位的协同运动,同时保证机器人重心稳定,不会摔倒,实现了机器人的“舞蹈”动作。该项工作表明,小型仿人双足机器人的设计方案具有一定的合理性与可行性,对促进青少年掌握机器人技术极有帮助。 相似文献
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基于ODE 引擎的开放式仿人机器人仿真 总被引:2,自引:0,他引:2
为了获得灵活、开放、简洁的仿真功能,提出了一种基于ODE(open dynamics engine)的仿人机器人
仿真平台集成方案.将基于ODE 的仿人机器人仿真系统开发过程定义为两类运算:变换叠加和关节叠加,并设计
了这两类叠加的ODE 算法.将仿人机器人结构描述为一个设计者和计算机都可以理解的结构表,将该结构表翻译
为ODE 基本元素实现仿真.设计并实现了一个基于所提出方案的仿人机器人仿真平台,根据基于倒立摆的步态规
划思想,设计并在仿真平台上实现了双足步行的仿真实验.实验证明了文中方法的有效性. 相似文献
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《Advanced Robotics》2013,27(6):633-652
The authors are engaged in studies of biped walking robots from the following two viewpoints. One is a viewpoint as a human science. The other is a viewpoint towards the development of humanoid robots. In the current research concerning a biped walking robot, there is no developed example of a life-size biped walking robot with antagonistically driven joints by which the human musculo-skeletal system is imitated in the lower limbs. Humans are considered to exhibit walking behavior which is both efficient and capable of flexibly coping with contact with the outside environment. However, developed biped walking robots cannot realize human walking. The human joint is driven by two or more antagonistic muscle groups. Humans can vary the joint stiffness, using nonlinear spring characteristics possessed by the muscles themselves. The function is an indispensable function for a humanoid. Therefore, the authors designed and built an anthropomorphic biped walking robot having antagonistic driven joints. In this paper, the authors introduce the design method of the robot. The authors performed walking experiments with the robot. As a result, a quasi-dynamic biped walking using antagonist driven joint was realized. The walking speed was 7.68 s per step with a 0.1 m step length. 相似文献
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《Advanced Robotics》2013,27(4):415-435
This paper describes position-based impedance control for biped humanoid robot locomotion. The impedance parameters of the biped leg are adjusted in real-time according to the gait phase. In order to reduce the impact/contact forces generated between the contacting foot and the ground, the damping coefficient of the impedance of the landing foot is increased largely during the first half double support phase. In the last half double support phase, the walking pattern of the leg changed by the impedance control is returned to the desired walking pattern by using a polynomial. Also, the large stiffness of the landing leg is given to increase the momentum reduced by the viscosity of the landing leg in the first half single support phase. For the stability of the biped humanoid robot, a balance control that compensates for moments generated by the biped locomotion is employed during a whole walking cycle. For the confirmation of the impedance and balance control, we have developed a life-sized humanoid robot, WABIAN-RIII, which has 43 mechanical d.o.f. Through dynamic walking experiments, the validity of the proposed controls is verified. 相似文献