Design and motion control of a tendon-driven continuum robot for aerospace applications

Abstract

Continuum robots are flexible and compliant. Compared to the case in conventional articulated manipulators, the driving unit can be placed outside the workspace of the robot, so that the motion orientation has a relatively complete linear configuration flow, which can be applied to a special environment with narrow and multiple obstacles such as aerospace. This study presents the development process of a tendon-driven continuum robot (TCR) with a high length-diameter ratio. The skeleton structure which imitates a snake is composed of continuous joints in series. The driving device is operated by using a tendon-driven method, which reduces the complexity of the driving box and control system significantly. The diameter of the robot is designed to be 5 mm, which enables it to work in a narrow and slender space with certain flexibility. Subsequently, a kinematic model of the robot is established. The mode function backbone method is applied to realize TCR trajectory planning. An idea of segmented solving is adopted to achieve trajectory tracking control of the continuum robot. Finally, a prototype of the continuum robot is produced, and the rationality of the robot design and the effectiveness of the motion control method are verified through trajectory simulations and experiments. The robot can perform inspection tasks within a narrow gap of 20 mm with good environmental adaptability.

Keywords

Continuum robots tendon-driven kinematics trajectory planning special environment application

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References

Walker

Choset

Chirikjian

. Snake-like and continuum robots. In: Siciliano

Khatib

(eds) Springer Handbook of Robotics. Cham: Springer International Publishing, 2016, pp. 481–498.

Palmer

Cobos-Guzman

Axinte

. Real-time method for tip following navigation of continuum snake arm robots. Robot Autonom Syst 2014; 62: 1478–1485.

Amanov

Nguyen

T-D

Burgner-Kahrs

. Tendon-driven continuum robots with extensible sections—a model-based evaluation of path-following motions. Int J Robot Res 2021; 40: 7–23.

Nemitz

Mihaylov

Barraclough

, et al. Using voice coils to actuate modular soft robots: wormbot, an example. Soft Robot 2016; 3: 198–204.

Jorgensen

Bains

. SRMS history, evolution and lessons learned. In: AIAA SPACE 2011 Conference & Exposition. American Institute of Aeronautics and Astronautics, 2011, pp. 27–29.

Matsueda

Kuraoka

Goma

, et al. JEMRMS system design and development status. In: NTC ’91 - National Telesystems Conference Proceedings, 1991, pp. 391–395.

Cruijssen

Ellenbroek

Henderson

, et al. The European robotic arm: a high-performance mechanism finally on its way to space. In: The 42nd aerospace mechanism Symposium, 2014, pp. 319–334.

Liu

. An overview of the space robotics progress in China. System 2014; 14: 15–22.

Chen

Liu

Wang

, et al. Contact force minimization for space flexible manipulators based on effective mass. J Guid Control Dynam 2019; 42: 1870–1877.

10.

Walker

, Robot strings: long, thin continuum robots. In: 2013 IEEE aerospace Conference, Big Sky, MT, USA, 02–09 March 2013, pp. 1–12.

11.

Huang

Zou

. Kinematic modeling and control of variable curvature soft continuum robots. IEEE ASME Trans Mechatron 2021; 26: 3175–3185.

12.

Russo

Sadati

SMH

Dong

, et al. Continuum robots: an overview. Advanced Intelligent Systems 2023; 5: 2200367.

13.

Buckingham

Graham

. Dexterous manipulators for nuclear inspection and maintenance — case study. In: 2010 1st International Conference on Applied Robotics for the Power Industry, Montreal, QC, Canada, 05-07 October 2010, pp. 1–6.

14.

Palmer

Axinte

. Active uncoiling and feeding of a continuum arm robot. Robot Comput Integrated Manuf 2019; 56: 107–116.

15.

Mitros

Thamo

Bergeles

, et al. Design and modelling of a continuum robot for distal lung sampling in mechanically ventilated patients in critical care. Front Robot AI 2021; 8: 611866.

16.

Wang

, et al. Inverse kinematics and dexterous workspace formulation for 2-segment continuum robots with inextensible segments. IEEE Robot Autom Lett 2022; 7: 510–517.

17.

Wang

Liu

, et al. Closed-loop pose control and automated suturing of continuum surgical manipulators with customized wrist markers under stereo vision. IEEE Robot Autom Lett 2021; 6: 7137–7144.

18.

Chen

Jin

, et al. A variable curvature model for multi-backbone continuum robots to account for inter-segment coupling and external disturbance. IEEE Robot Autom Lett 2021; 6: 1590–1597.

19.

Zhao

Zeng

, et al. A continuum manipulator for continuously variable stiffness and its stiffness control formulation. Mech Mach Theor 2020; 149: 103746.

20.

Yang

Zhang

, et al. Development and evaluation of a space robot prototype equipped with a cable-driven manipulator. Acta Astronaut 2023; 208: 142–154.

21.

Yuan

, et al. Equivalent kinematics and pose-configuration planning of segmented hyper-redundant space manipulators. Acta Astronaut 2021; 185: 102–116.

22.

Della Santina

Bicchi

Rus

. On an improved state parametrization for soft robots with piecewise constant curvature and its use in model based control. Autom. Lett 2020; 5: 1001–1008.

23.

Armanini

Boyer

Mathew

, et al. Soft robots modeling: a structured overview. IEEE Trans Robot 2023; 39: 1728–1748.

24.

Seraji

. Configuration control of redundant manipulators: theory and implementation. IEEE Trans Rob Autom 1989; 5: 472–490.

25.

Tenreiro Machado

Lopes

. A fractional perspective on the trajectory control of redundant and hyper-redundant robot manipulators. Appl Math Model 2017; 46: 716–726.

26.

Chirikjian

Burdick

. A modal approach to hyper-redundant manipulator kinematics. IEEE Trans Rob Autom 1994; 10: 343–354.

27.

Liu

, et al. A modified modal method for solving the mission-oriented inverse kinematics of hyper-redundant space manipulators for on-orbit servicing. Acta Astronaut 2017; 139: 54–66.

28.

Qin

Cheng

, et al. Design and motion control of an under-actuated snake arm maintainer. Robotica 2022; 40: 1763–1782.

29.

Qin

Cheng

, et al. A snake-inspired layer-driven continuum robot. Soft Robot 2022; 9: 788–797.

30.

Chirikjian

Burdick

. An obstacle avoidance algorithm for hyper-redundant manipulators. In: IEEE International Conference on Robotics and Automation Proceedings, Cincinnati, OH, USA, 13–18 May 1990, pp. 625–631.

31.

Chirikjian

Burdick

. Kinematics of hyper-redundant robot locomotion with applications to grasping. Los Alamitos, CA: IEEE Computer Society Press, 1991, pp. 720–725.