Research on Gait Generation and Control of Snake-like Robot for Bridge Cable Climbing

Abstract

Abstract:

This paper used an orthogonal joint snake-like robot for cable climbing. A method called by iterative chain fitting and keyframe wave extraction algorithm was introduced for the gait design of snake-like robot with orthogonal joint. This method can build a relationship between the backbone curve and the input of the joint actuator. The advantages of backbone method and control function method could be combined by this method. By using this method the backbone and its motion can be known and the control function of joint actuator can be obtained at the same time. The proposed method can improve the safety of the climb, the flexibility of the gait effectively and it is easy to control the underlying drivers. Experimental results show that the method is feasible.

Key words: snake-like robot, orthogonal joint, iterative chain fitting;keyframe wave extraction, spiral climbing gait

摘要：

使用基于迭代链拟合与关键帧提取的蛇形机器人缆索攀爬步态生成方法，对一种正交关节蛇形机器人桥梁缆索攀爬步态控制进行了研究。该方法可建立蛇体骨干曲线定向位移与底层驱动器输入之间的联系，可将传统的骨干曲线法和控制函数法两种步态生成方法的优点有效地结合。使用该方法生成步态既可直观地得到骨干曲线的形状及运动趋势，又可得到以关节号和时间为变量的控制函数。该方法可有效提高蛇形机器人桥梁缆索攀爬的安全性、步态灵活性，同时，也便于控制底层驱动器。最后，通过实验验证了所提出方法的有效性。


关键词: 蛇形机器人, 正交关节, 迭代链拟合, 关键帧提取, 螺旋攀爬步态控制

CLC Number:

TP242

WEI Wu, SUN Hong-Chao. Research on Gait Generation and Control of Snake-like Robot for Bridge Cable Climbing[J]. China Mechanical Engineering, 2012, 23(10): 1230-1236.

魏武, 孙洪超. 蛇形机器人桥梁缆索攀爬步态控制研究[J]. 中国机械工程, 2012, 23(10): 1230-1236.

References

[1]Aracil R, Saltaren R J, Reinoso O. A Climbing Parallel Robot: A Robot to Climb Along Tubular and Metallic Structures [J]. IEEE Robotics and Automation Magazine, 2006, 13(1) :16-22.
[2]Xu F Y, Wang X S. Design and Analysis of a Bisected Wheel-based Cable Climbing Robot[J]. Journal of Southeast University(English Edition), 2009, 25(1) :41-46.
[3]罗均.缆索维护机器人及其关键问题的研究[D].上海交通大学,2000:
[4]Burdick J W, Radford J, Chirikjian G S. A Side-winding Locomotion Gait for Hyper-redundant Robots[J]. Robotics and Automation, 1993,3 ( 3 ) : 101-106.
[5]Limpkin K, Brown I, Peck A, et al. Differentiable and Piecewise Differentiable Gaits for Snake Robots [C]//IEEE/RSJ International Conference on Intelligent Robots and Systems. San Diego, CA, USA, 2007 : 1864-1869.
[6]Hirose S. Biologically Inspired Robots (Snake-like Locomotor and Manipulator) [M]. Oxford: Oxford University Press, 1987.
[7]Goldman G, Hong D W. Considerations for Finding the Optimal Design Parameters for a Novel Pole Climbing Robot [C]//ASME Mechanisms and Robotics Conference. New York, 2008 : 859-866.
[8]李斌 [1],叶长龙 [2].蛇形机器人的扭转运动研究[J].中国机械工程,2005,16(11):941-945.
[9]李斌 [1],马书根 [2],王越超 [1],陈丽 [1],汪洋 [1].一种具有三维运动能力的蛇形机器人的研究[J].机器人,2004,26(6):506-509.
[10]Teseh M, Lipkin K, Brown I. Parameterized and Scripted Gaits for Modular Snake Robots[J]. Advanced Robotics,2009,23(9) : 1131-1158.
[11]Ijspeert A J. Central Pattern Generators for Locomotion Control in Animals and Robotics[J]. Neural Networks, 2008,21 : 642-653.
[12]Hatton R L,Choset H. Generating Gaits for Snake Robots: Annealed Chain Fitting and Keyframe Wave Extraction[J]. Autonomous Robots, 2010,28 (3):271-281.
[13]孙洪[1],刘立祥[2],马培荪[1].攀爬蛇形机器人爬树的静态机理研究[J].机器人,2008,30(2):112-116.
[14]Goldman G J. Design Space and Motion Development for a Pole Climbing Serpentine Robot Featuring Actu- ated Universal Joints[D]. Virginia: Virginia Polytechnic Institute and State University,2009.
[15]Anderson S B. Discretization of a Continuous Curve[J]. IEEE Transactions on Robotics, 2008, 24(2) :456-461.
[16]魏武[1],张占[1].基于控制函数的蛇形机器人攀爬运动分析[J].控制工程,2011,18(2):322-326.