Effects of Elastic Joints on Performances of a Close-Chained Rod Rolling Robot

doi:10.1007/s12204-021-2289-1

Abstract

Abstract: In rolling experiments, the performances of spider-like robot are limited greatly by its motors’ driving ability; meanwhile, the ground reaction forces are so great that they damaged the rods. In this paper, we solve above problems both mechanically and by control. Firstly, we design the parameters of the central pattern generator (CPG) network based on the kinematics of the robot to enable a smooth rolling trajectory. And we also analyze the kinematic rolling and dynamic rolling briefly. Secondly, we add torsion springs to the passive joints of the spider-like robot aiming to make use of its energy storage capacity to compensate the insufficient torque. The simulation results show that the optimized CPG control parameters can reduce the fluctuation of the mass center and the ground reaction forces. The torsion spring can reduce the peak torque requirements of the actuated joints by 50%.

Key words: spider-like robot, rolling locomotion, central pattern generators (CPG), elastic joint

CLC Number:

TP242

ZHAO Chenliang (赵晨亮), ZHANG Xiuli∗ (张秀丽), HUANG Senwei (黄森威), YAO Yan’an (姚燕安). Effects of Elastic Joints on Performances of a Close-Chained Rod Rolling Robot[J]. J Shanghai Jiaotong Univ Sci, 2022, 27(5): 621-630.

References 30

[1]	LOW K H, HU T J, MOHAMMED S, et al. Perspectives on biologically inspired hybrid and multi-modal locomotion [J]. Bioinspiration & Biomimetics, 2015, 10(2): 020301.
[2]	KING R S. BiLBIQ: A biologically inspired robot with walking and rolling locomotion [M]. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013.
[3]	SASTRA J, CHITTA S, YIM M. Dynamic rolling for a modular loop robot [J]. The International Journal of Robotics Research, 2009, 28(6): 758-773.
[4]	CHOWDHURYA R, SOH G S, FOONG S H, et al. Experiments in robust path following control of a rolling and spinning robot on outdoor surfaces [J]. Robotics and Autonomous Systems, 2018, 106: 140-151.
[5]	MASUDA Y, ISHIKAWA M. Development of a deformation-driven rolling robot with a soft outer shell [C]//2017 IEEE International Conference on Advanced Intelligent Mechatronics (AIM). Munich: IEEE, 2017: 1651-1656.
[6]	PARK S, PARK E, YIM M, et al. Optimization-based nonimpact rolling locomotion of a variable geometry truss [J]. IEEE Robotics and Automation Letters, 2019, 4(2): 747-752.
[7]	WANG X L, JIN H Z, ZHU Y H, et al. Serpenoid polygonal rolling for chain-type modular robots: A study of modeling, pattern switching and application [J]. Robotics and Computer-Integrated Manufacturing, 2016, 39: 56-67.
[8]	WANG Y J, WU C L, YU L Q, et al. Trajectory planning of a rolling robot of closed five-bow-shaped-bar linkage [J]. Robotics and Computer-Integrated Manufacturing, 2018, 53: 81-92.
[9]	WANG Y J, WU C L, YU L Q, et al. Dynamics of a rolling robot of closed five-arc-shaped-bar linkage [J]. Mechanism and Machine Theory, 2018, 121: 75-91.
[10]	TIAN Y B, YAO Y A, DING W, et al. Design and locomotion analysis of a novel deformable mobile robot with worm-like, self-crossing and rolling motion [J]. Robotica, 2016, 34(9): 1961-1978. [11] TIAN Y B, ZHANG D, YAO Y A, et al. A reconfigurable multi-mode mobile parallel robot [J]. Mechanism and Machine Theory, 2017, 111: 39-65.
[12]	WEI X Z, TIAN Y B, WEN S S. Design and locomotion analysis of a novel modular rolling robot [J]. Mechanism and Machine Theory, 2019, 133: 23-43.
[13]	YIM M, ROUFAS K, DUFF D, et al. Modular reconfigurable robots in space applications [J]. Autonomous Robots, 2003, 14(2/3): 225-237.
[14]	CURTIS S, BRANDT M, BOWERS G, et al. Tetrahedral robotics for space exploration [C]//2007 IEEE Aerospace Conference. Big Sky: IEEE, 2007: 1-9.
[15]	GOULDING M. Circuits controlling vertebrate locomotion: Moving in a new direction [J]. Nature Reviews Neuroscience, 2009, 10(7): 507-518.
[16]	GOSWAMI A, VADAKKEPAT P. Humanoid robotics: A reference [M]. Dordrecht: Springer, 2019: 1099-1134.
[17]	VAN DER NOOT N, IJSPEERT A J, RONSSE R. Bio-inspired controller achieving forward speed modulation with a 3D bipedal walker [J]. The International Journal of Robotics Research, 2018, 37(1): 168-196.
[18]	YU J Z, CHEN S F, WU Z X, et al. Energy analysis of a CPG-controlled miniature robotic fish [J]. Journal of Bionic Engineering, 2018, 15(2): 260-269.
[19]	SPR¨OWITZ A, TULEU A, VESPIGNANI M, et al. Towards dynamic trot gait locomotion: Design, control, and experiments with Cheetah-cub, a compliant quadruped robot [J]. The International Journal of Robotics Research, 2013, 32(8): 932-950.
[20]	COLASANTO L, VAN DER NOOT N, IJSPEERT A J. Bio-inspired walking for humanoid robots using feet with human-like compliance and neuromuscular control [C]//2015 IEEE-RAS 15th International Conference on Humanoid Robots (Humanoids). Seoul: IEEE, 2015: 26-32.
[21]	HUTTER M, GEHRING C, BLOESCH M, et al. Starleth: a compliant quadrupedal robot for fast, efficient, and versatile locomotion [M]//Adaptive mobile robotics. Singapore: World Scientific, 2012: 483-490.
[22]	HUTTER M, GEHRING C, LAUBER A, et al. ANYmal - toward legged robots for harsh environments [J]. Advanced Robotics, 2017, 31(17): 918-931.
[23]	KAKOGAWA A, JEON S, MA S G. Stiffness design of a resonance-based planar snake robot with parallel elastic actuators [J]. IEEE Robotics and Automation Letters, 2018, 3(2): 1284-1291.
[24]	IRMSCHER C, WOSCHKE E, MAY E, et al. Design, optimisation and testing of a compact, inexpensive elastic element for series elastic actuators [J]. Medical Engineering & Physics, 2018, 52: 84-89.
[25]	DOS SANTOS W M, CAURIN G A P, SIQUEIRA A A G. Design and control of an active knee orthosis driven by a rotary Series Elastic Actuator [J]. Control Engineering Practice, 2017, 58: 307-318. [26] TSAGARAKIS N G, MORFEY S, MEDRANO CERDA G, et al. COMpliant huMANoid COMAN: Optimal joint stiffness tuning for modal frequency control [C]//2013 IEEE International Conference on Robotics and Automation. Karlsruhe, Germany: IEEE, 2013: 673-678.
[27]	SHI R D, ZHANG X L, YAO Y A. A CPG-based control method for the multi-mode locomotion of a desert spider robot [J]. Robot, 2018, 40(2): 146-157(in Chinese).
[28]	IJSPEERT A J. Central pattern generators for locomotion control in animals and robots: A review [J]. Neural Networks, 2008, 21(4): 642-653.
[29]	MORO F L, SPR¨OWITZ A, TULEU A, et al. Horselike walking, trotting, and galloping derived from kinematic Motion Primitives (kMPs) and their application to walk/trot transitions in a compliant quadruped robot [J]. Biological Cybernetics, 2013, 107(3): 309- 320.
[30]	ZHONG G L, CHEN L, JIAO Z D, et al. Locomotion control and gait planning of a novel hexapod robot using biomimetic neurons [J]. IEEE Transactions on Control Systems Technology, 2018, 26(2): 624-636.