General Structural Pattern and Shape Reproduction for Soft Continuum Robot
SU Manjia1, ZHANG Yihong1, XIE Rongzhen1, ZHU Haifei1, GUAN Yisheng1, MAO Shixin2,3
1. School of Electro-mechanical Engineering, Guangdong University of Technology, Guangzhou 510006, China;
2. Shenzhen Sanhang Industrial Technology Research Institute, Shenzhen 518057, China;
3. Huizhou Sanhang UAV Technology Research Institute, Huizhou 516229, China
Abstract:For developing a general theory for design and analysis of soft continuum robot, this paper addresses a general structural pattern (GSP) based on the locomotion features of current continuum soft robots and the longitudinal muscle of slim creatures in the nature, and the corresponding kinematics of continuum soft robots in actuation space, configuration space and task space. To implement dexterous movement and operation by a continuum soft robot in configuration space, a shape reproduction algorithm for a slim soft robot to reproduce arbitrary curves and a shape similarity criterion for evaluating curves reproduction using discrete Fréchet distance are proposed as well. To verify the validity of GSP and its kinematics, simulations and experiments are carried out, using a modular continuum soft robot consisting of two soft modules actuated by SMA (shape memory alloy) springs. Moreover, taking the biomimetic movement curves as the objective curves, the effects of curve shape, section number and parameters on the reproduction performance are studied through many cases. It is shown that the more the soft section modules and the larger the maximum bending angle of a single section, the higher the shape similarity a continuum soft robot achieves.
[1] Lineback P E. Studies on the musculature of the human colon, with special reference to the taeniae[J]. American Journal of Anatomy, 1925, 36(2):357-383.
[2] Uno Y, van Velkinburgh J C. Logical hypothesis:Low FODMAP diet to prevent diverticulitis[J]. World Journal of Gastrointestinal Pharmacology and Therapeutics, 2016, 7(4):503-512.
[3] Sun L N, Hu H Y, Li M T. A review on continuum robot[J]. Robot, 2010, 32(5):688-694.
[4] Singh P K, Krishna C M. Continuum arm robotic manipulator:A review[J]. Universal Journal of Mechanical Engineering, 2014, 2(6):193-198.
[5] McMahan W, Jones B A, Walker I D. Design and implementation of a multi-section continuum robot:Air-Octor[C]//IEEE/RSJ International Conference on Intelligent Robots and Systems. Piscataway, USA:IEEE, 2005:3345-3352.
[6] McMahan W, Chitrakaran V, Csencsits M, et al. Field trials and testing of the OctArm continuum manipulator[C]//IEEE International Conference on Robotics and Automation. Piscataway, USA:IEEE, 2006:2336-2341.
[7] Yang Y F, Zhang W Z. ET arm:Highly compliant elephant-trunk continuum manipulator[C]//7th International Conference on Intelligent Robotics and Applications. Berlin, Germany:Springer, 2014:288-299.
[8] Suzumori K, Iikura S, Tanaka H. Development of flexible microactuator and its applications to robotic mechanisms[C]//IEEE International Conference on Robotics and Automation. Piscataway, USA:IEEE, 1991:1622-1627.
[9] Greer J D, Morimoto T K, Okamura A M, et al. Series pneumatic artificial muscles (sPAMs) and application to a soft continuum robot[C]//IEEE International Conference on Robotics and Automation. Piscataway, USA:IEEE, 2017:5503-5510.
[10] Robertson M A, Paik J. Practical control methods for vacuum driven soft actuator modules[C]//IEEE/RSJ International Conference on Intelligent Robots and Systems. Piscataway, USA:IEEE, 2017:1224-1229.
[11] Jones B A, Walker I D. A new approach to Jacobian formulation for a class of multi-section continuum robots[C]//IEEE International Conference on Robotics and Automation. Piscataway, USA:IEEE, 2005:3268-3273.
[12] Jones B A, Walker I D. Kinematics for multisection continuum robots[J]. IEEE Transactions on Robotics, 2006, 22(1):43-55.
[13] Rolf M, Steil J J. Efficient exploratory learning of inverse kinematics on a bionic elephant trunk[J]. IEEE Transactions on Neural Networks and Learning Systems, 2014, 25(6):1147-1160.
[14] Reinhart R F, Steil J J. Hybrid mechanical and data-driven modeling improves inverse kinematic control of a soft robot[J]. Procedia Technology, 2016, 26(1):12-19.
[15] Webster R J Ⅲ, Jones B A. Design and kinematic modeling of constant curvature continuum robots:A review[J]. International Journal of Robotics Research, 2010, 29(13):1661-1683.
[16] Hannan M W, Walker I D. Kinematics and the implementation of an elephant's trunk manipulator and other continuum style robots[J]. Journal of Field Robotics, 2003, 20(2):45-63.
[17] Bailly Y, Amirat Y. Modeling and control of a hybrid continuum active catheter for aortic aneurysm treatment[C]//IEEE International Conference on Robotics and Automation. Piscataway, USA:IEEE, 2005:924-929.
[18] Neppalli S, Jones B A. Design, construction, and analysis of a continuum robot[C]//IEEE/RSJ International Conference on Intelligent Robots and Systems. Piscataway, USA:IEEE, 2007:1509-1513.
[19] Webster R J Ⅲ. Design and mechanics of continuum robots for surgery[D]. Baltimore, USA:Johns Hopkins University, 2007.
[20] Seol Y, Noh J. Deformation-based animation of snake locomotion[C]//4th International Symposium on Visual Computing. Berlin, Germany:Springer, 2008:646-657.
[21] Alt H, Godau M. Computing the Fréchet distance between two polygonal curves[J]. International Journal of Computational Geometry & Applications, 1995, 5(1/2):75-91.
[22] 安晓亚,刘平芝,杨云,等.一种线状要素几何相似性度量方法及其应用[J].武汉大学学报(信息科学版),2015,40(9):1225-1229. An X Y, Liu P Z, Yang Y, et al. A geometric similarity measurement method and applications to linear feature[J]. Geomatics and Information Science of Wuhan University, 2015, 40(9):1225-1229.
[23] Zhang Y H, Su M J, Li M J, et al. A spatial soft module actuated by SMA coil[C]//IEEE International Conference on Mechatronics and Automation. Piscataway, USA:IEEE, 2017:677-682.