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J4  2013, Vol. 47 Issue (2): 345-352    DOI: 10.3785/j.issn.1008-973X.2013.02.024
    
Homing algorithm analysis of a cable-driven
humanoid-arm manipulator
CHEN Wei-hai1, CHEN Quan-zhu1, LIU Rong2, ZHANG Jian-bing2, CUI Xiang1
1. School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China;
2. School of Mechanical Engineering and Automation, Beihang University, Beijing 100191,China
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Abstract  

In order to solve the problem of error accumulation in motion control and determine the initial posture when restarting, this paper addresses a homing method without using external device, which is, completing self-homing work only depending on self-detected sensor information and the corresponding homing algorithm. As for the self-homing issue of cable-driven parallel robot, combining with the structural characteristics of the cable-driven parallel robot, incremental encoders together with limit switches are chosen as the homing detecting devices. On that basis, kinematics coupling features of the mechanism is analyzed and a novel homing algorithm, that is, an integral three-step method is proposed for origin positioning and automatic homing. Additionally, only one driven cable needs to be actively controlled in each step homing motion by decoupling control. Simulations and experiments have been performed to demonstrate the effectiveness of the homing algorithm, that is, the manipulator can return back to the initial posture dexterously and accurately.



Published: 01 February 2013
CLC:  TP 242  
Cite this article:

CHEN Wei-hai, CHEN Quan-zhu, LIU Rong, ZHANG Jian-bing, CUI Xiang. Homing algorithm analysis of a cable-driven
humanoid-arm manipulator. J4, 2013, 47(2): 345-352.

URL:

http://www.zjujournals.com/eng/10.3785/j.issn.1008-973X.2013.02.024     OR     http://www.zjujournals.com/eng/Y2013/V47/I2/345


绳驱动拟人臂机器人回零算法分析

为解决绳驱动拟人臂机器人在运动过程中产生的误差累积问题以及确定断电后重启的位姿,介绍一种不依靠外部设备的回零方法,即仅依靠自身检测的传感信息和相应的算法实现自回零.针对三自由度的并联球关节的自动回零问题,结合绳驱动并联机器人的结构特点,系统采用增量式编码器与限位开关相结合作为回零检测装置|在此基础上,对机构的运动耦合性进行了分析,提出分三步实现机器人动平台的原点定位与自动回零方法,并通过解耦控制,实现每步回零运动只需主动控制一条驱动绳索|仿真与实验验证这种三步自动回零算法的可行性,能够灵活准确的使机器人回到初始状态.

[1] LIU S Y, CHENG T H, YAN J L, et al. Development of a dexterous cable driven spine mechanism for humanoid robots[C]∥ Proceedings of IEEE/ASME International Conference on Advanced Intelligent Mechatronics. Singapore: \
[s.n.\], 2009: 1588-1593.
[2] LUM G Z, MUSTAFA S K, LIM H R, et al. Design and motion control of a cable-driven dexterous robotic arm [C]∥ Proceedings of 2010 IEEE Conference on Sustainable Utilization and Development in Engineering and Technology.Petaling Jaya:  \
[s.n.\], 2010: 106-111.
[3] ALP A B, AGRAWAL S K. Cable suspended robots: design, planning and control [C]∥ Proceedings of IEEE International Conference on Robotics and Automation.Washington: \
[s.n.\], 2002: 4275-4280.
[4] MUSTAFA S K, GUILIN Y, SONG H Y, et al. Kinematic calibration of a 7-DOF self-calibrated modular cable-driven robotic arm [C]∥ Proceedings of IEEE International Conference on Robotics and Automation. Pasadena: \
[s.n.\], 2008: 1288-1293.
[5] 陈泉柱,陈伟海,张建斌.线驱动拟人臂机器人机构与前向运动学分析[J].北京航空航天大学学报,2006, 32(8): 988-991.
CHEN Quan-zhu, CHEN Wei-hai, ZHANG Jian-bin. Mechanism and forward kinematic analysis for cable-driven humanoid-arm manipulator [J]. Journal of Beijing University of Aeronautics and Astronautics, 2006, 32(8): 988-991.
[6] YIU Y L, MENG J, Li Z X. Auto-calibration for a parallel manipulator with sensor redundancy [C]∥ Proceedings of IEEE International Conference on robotics & automation. Taipei: \
[s.n.\], 2003: 3660-3665.
[7] ABTAHI M, PENDAR H, ALASTY A, et al. Experimental kinematic calibration of parallel manipulators using a relative position error measurement system [J]. Robotics and Computer-Integrated Manufacturing, 2010, 26: 799-804.
[8] KIM J H, KIM J Y, OH J H. Adjustment of home posture of a biped humanoid robot using an inertial sensor and force torque sensors [C]∥ Proceedings of IEEE International Conference on Intelligent Robots and Systems. San Diego: \
[s.n.\], 2007: 2223-2229.
[9] 樊泽明,黄玉美,高峰.混联机器人回零检测与高精度原点定位方法[J].电子测量与仪器学报,2003, 17(1): 28-32.
FAN Ze-ming, HUANG Yu-mei, GAO Feng. Research on Realizating Method of the zero returning inspection and zero shift with high precision in hybrid robot [J]. Journal of Electronic Measurement and Instrument, 2003, 17(1): 28-32.
[10] DING Q, SUN L, JI J, et al. Calibration of a 2-Dof planar parallel robot: home position identification and experimental verification [C]∥ Proceedings of IEEE International Conference on Mechatronics and Automation. Niagara Falls, Canada: \
[s.n.\], 2005: 510-515.
[11] 樊泽明,黄玉美,史文浩,等.高精度定位传感器及其在混联切削机器人中的应用[J].西安理工大学学报,2002, 18(1): 10-13.
FAN Ze-ming, HUANG Yu-mei, SHI Wen-hao, et al. Design of a high precision positioning sensor and its application in hybrid machine robot [J]. Journal of Xian University of Technology, 2002, 18(1): 10-13.
[12] 陈泉柱,陈伟海,刘荣,等.具有关节角反馈的绳驱动拟人臂机器人机构设计与张力分析[J].机械工程学报, 2010, 46(13): 83-90.
CHEN Quan-zhu,CHEN Wei-hai, LIU Rong, et al. Mechanism design and tension analysis of a cable-driven humanoid-arm manipulator with joint angle feedback[J]. Journal of Mechanical Engineering, 2010, 46(13): 83-90.
[13] CHEN I M, YANG G L, TAN C T. Local POE model for robot kinematic calibration [J]. Mechanism and Machine Theory, 2001, 36(11/12): 1215-1239.
[14] CHEN Wei-hai, CHEN Quan-zhu, ZHANG Jian-bin, et al. Forward kinematic and workspace analysis for a 7-DOF cable-driven humanoid arm [C]∥ Proceedings of IEEE International Conference on Intelligent Robots and Systems. Kunming, Dec: \
[s.n.\], 2006: 1175-1180.
[15] 王建华,刘素庆,陈伟海.具有关节角反馈的绳驱动仿人肩关节的张力优化与控制[J].机器人,2011, 3(33): 324-331.
WANG Jian-hua,LIU Su-qing, CHEN Wei-hai. Tension optimization and control of a cable-driven humanoid shoulder with joint angle feedback[J]. Robot, 2011, 3(33): 324-331.

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