共查询到16条相似文献,搜索用时 140 毫秒
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六足仿生机器人因其灵活度好、可靠性高、适应性强等特点而得到广泛应用;针对六足仿生巡检机器人,从结构设计、步态规划、系统仿真和实物构建等方面,探索一般意义上系统设计和实现方法;首先设计了六足仿生机器人的多关节机械结构,并给出了此类系统的量化建模方法;然后采用了重心随动的三角步态规划方法,对系统稳定性和典型步态规划进行了量化分析;在此基础上基于标准D-H参数法建立了机器人的运动学模型,并且通过仿真实现了六足机器人向前纵向行走和向右横向行走的直线平稳运动;最后通过六足仿生巡检机器人实物测试,验证了所设计的结构和步态规划方法的可行性和有效性。 相似文献
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基于PIC单片机的六足机器人制作 总被引:6,自引:0,他引:6
基于仿生原理,以PIC单片机为控制器的核心,制作出了动作灵活、价格低廉以及模块化结构的六足机器人。该机器人能够严格按三角步态进行行走,实现诸如直线、转弯、躲避障碍物和追踪物体等行走功能。文中介绍了该机器人三角步态的行走原理、结构组成、控制系统和控制算法。 相似文献
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分析甲虫生物的原型特点和运动方式,对仿生甲虫六足救援机器人进行结构设计和样机设计,对甲虫生物原型设计了六足救援机器人。通过对仿生甲虫机器人三足运动步态,给出了直线行走时6条腿的末端位置矢量的表达式,结果证明仿生甲虫六足救援机器人的稳定性较强。 相似文献
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针对桥梁检测的要求,设计出了一种可以在桥底爬行和检测的六足爬壁机器人,通过对六足爬壁机器人运动机理以及腿部结构的理论分析和研究,提出了适应于桥底爬行的横向三角步态和横向四角步态.其中横向四角步态是从横向三角步态改进而来的,与横向三角步态相比,横向四角步态有更好的稳定性和安全性,更适用于桥底作业的这种工作环境.采用UG设计软件和Adams仿真软件相结合的方式分别对以上两种步态进行了仿真,实验结果表明了所提出步态的有效性. 相似文献
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中枢模式发生器(CPG)在六足机器人的运动步态控制中起着至关重要的作用。为了研究六足机器人的运动控制方法,首先基于仿生学原理设计了六足机器人的机械结构,并在虚拟样机软件ADAMS中搭建其三维模型;其次选择Hopf振荡器作为CPG单元,并改进了振荡器模型;然后设计了六足机器人的CPG网络拓扑结构,包含单腿关节映射函数方案和腿间CPG环形耦合网络方案,并对其进行了改进;最后通过ADAMS和MATLAB联合仿真实验,验证了所设计六足机器人的运动稳定性和CPG控制方案的可行性与有效性。仿真结果表明,该方法能够满足六足机器人不同运动步态的控制需求,对六足机器人的运动控制具有一定的实际应用价值。 相似文献
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Fault-tolerant locomotion of the hexapod robot 总被引:4,自引:0,他引:4
Jung-Min Yang Jong-Hwan Kim 《IEEE transactions on systems, man, and cybernetics. Part B, Cybernetics》1998,28(1):109-116
In this paper, we propose a scheme for fault detection and tolerance of the hexapod robot locomotion on even terrain. The fault stability margin is defined to represent potential stability which a gait can have in case a sudden fault event occurs to one leg. Based on this, the fault-tolerant quadruped periodic gaits of the hexapod walking over perfectly even terrain are derived. It is demonstrated that the derived quadruped gait is the optimal one the hexapod can have maintaining fault stability margin nonnegative and a geometric condition should be satisfied for the optimal locomotion. By this scheme, when one leg is in failure, the hexapod robot has the modified tripod gait to continue the optimal locomotion. 相似文献
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六边形对称分布六腿机器人的典型步态及其运动性能分析 总被引:1,自引:0,他引:1
为了便于在不同地理条件下合理地选择较优的步态,实现稳定高效的智能行走,本文针对一种六边形
对称分布的六腿机器人研究其不同步态的优劣.主要从行走能力、稳定性和能耗3 个角度对六边形对称结构的六腿
机器人在同样占空比下的3 种静态稳定周期步态进行了比较研究,此外还简要分析了其越障能力和穿越窄道的能
力.研究分析结果表明3 种步态(横向昆虫式摆动步态、哺乳动物式踢腿步态和混合步态)在不同条件下各有优劣:
横向昆虫式摆动步态在能耗和越障能力方面较其他两种步态有优势;而混合步态在稳定性上最具优势,其它能力处
于中间;哺乳动物式踢腿步态则可穿越窄道,步长上较昆虫摆动步态略好.本文的研究工作为六边形对称结构的六
腿机器人在未知复杂地貌环境下的智能行走提供了重要参考. 相似文献
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Weihai Chen Guanjiao Ren Jianbin Zhang Jianhua Wang 《Journal of Intelligent and Robotic Systems》2012,67(3-4):255-270
This paper focuses on the topic of smooth gait transition of a hexapod robot by a proposed central pattern generator (CPG) algorithm. Through analyzing the movement characteristics of the real insects, it is easy to generate kinds of gait patterns and achieve their smooth transition if we employ a series of oscillations with adjustable phase lag. Based on this concept, a CPG model is proposed, which is constructed by an isochronous oscillators and several first-order low-pass filters. As an application, a hexapod robot and its locomotion control are introduced by converting the CPG signal to robot’s joint space. Simulation and real world experiment are completed to demonstrate the validity of the proposed CPG model. Through measuring the position of the body center and the distance between footpoints and ground, the smooth gait transition can be achieved so that the effectiveness of the proposed method is verified. 相似文献
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Chu S.K.-K. Pang G.K.-H. 《IEEE transactions on systems, man, and cybernetics. Part A, Systems and humans : a publication of the IEEE Systems, Man, and Cybernetics Society》2002,32(6):752-756
This paper presents a gait analysis of the equilateral hexagonal model of hexapod robot. Mathematical analysis has been made on mobility, fault-tolerance, and stability. A comparison with the rectangular model of hexapod robot is also given, and it has shown that the hexagonal model shows better turning ability, a higher margin of stability during the fault-tolerant gait, and greater stride length in certain conditions. 相似文献
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A multi-legged robot based on a hybrid-driven mechanism is presented in this paper as an improvement of the legged robot based on crank-driven linkage mechanism. A hybrid-driven mechanism containing a full-rotational degree of freedom (DOF) and a linear translational DOF was obtained after a series of foot trajectory analyses on the Jansen mechanism. The stance phase trajectory of this hybrid-driven mechanism can maintain horizontality regardless of the length adjustment of the linear DOF. A turning gait of a hexapod robot based on this hybrid-driven mechanism was proposed, such that all of the legs had an identical crank angular speed, and the robot turned its orientation through different linear servo controls on the legs of the two sides. Simulation and experimental results showed that the hexapod robot could realize the turning gait when the legs of the two sides applied different length adjustments. The body center trajectories in all cases were approximate to a circle, and the smallest turning radius was close to the length of the robot. Moreover, the magnitude of the pitch and roll angles, and body center fluctuation in the simulations was all small, indicating that the hexapod robot based on the hybrid-driven mechanism was stable during the turning locomotion. 相似文献