Abstract
In soft robotics, there is the fundamental need to develop devices that are flexible and can change stiffness in order to work safely in the vicinity of humans. Moreover, these structures must be rigid enough to withstand the force application and accuracy in motion. To solve these issues, previous research proposed to add a compliance element between motor and load – Series Elastic Actuators (SEAs). This approach benefits from improved force control and shock tolerance due to the elasticity introduced at joint level. However, series compliance at the joint level comes at the cost of inferior position controllability and additional mechanical complexity. In this research, we move the elastic compliance to the link, and evaluate the characteristics of variable stiffness soft inflatable links. The detailed investigation of the dynamic behaviour of inflatable link takes into consideration different internal pressures and applied loads. Our results demonstrate that the use of soft inflatable links leads to good weight lifting capability whilst preserving compliance which is beneficial for safety critical applications.
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References
Siciliano, B., Khatib, O.: Handbook on Robotics. Springer, Heidelberg (2014)
Hogan, N.: Impedance control: an approach to manipulation: part III—applications. ASME. J. Dyn. Sys. Meas. Control. 107(1), 17–24 (1985). https://doi.org/10.1115/1.3140701
Pratt, G., Williamson, M.: Series elastic actuators. In: Proceedings of the 1995 IEEE/RSJ International Conference Intelligent Robots and Systems Human Robot Interaction and Cooperative Robots, vol. 1, pp. 399–406 (1995)
Wolf, S., et al.: Variable stiffness actuators: review on design and components. IEEE/ASME Trans. Mechatron. 21, 2418–2430 (2016)
Yang, C., Luo, J., Pan, Y., Liu, Z., Su, C.: Personalized variable gain control with tremor attenuation for robot teleoperation. IEEE Trans. Syst. Man Cybern.: Syst. 48(10), 1759–1770 (2018). https://doi.org/10.1109/TSMC.2017.2694020
Colgate, J.E., Schenkel, G.G.: Passivity of a class of sampled-data systems: application to haptic interfaces. J. Robot. Syst. 14, 37–47 (1997)
Yang, J., Pitarch, E.P., Potratz, J., Beck, S., Abdel-Malek, K.: Synthesis and analysis of a flexible elephant trunk robot”. Adv. Robot. 20, 631–659 (2006)
Cieślak, R., Morecki, A.: Elephant trunk type elastic manipulator - a tool for bulk and liquid materials transportation. Robotica 17(1), 11–16 (1999)
Laschi, C., Mazzolai, B., Mattoli, V., Cianchetti, M., Dario, P.: Design of a biomimetic robotic octopus arm. Bioinspir. Biomim. 4(1), 015006 (2009)
Hirose, S.: Biologically inspired robots: snake-like locomotors and manipulators. Appl. Mech. Rev. 48(3), B27–B27 (1995)
Rollinson, D., et al.: Design and architecture of a series elastic snake robot. In: 2014 IEEE/RSJ International Conference on Intelligent Robots and Systems, IROS 2014, 14–18 September 2014, pp. 4630–4636 (2014)
Majidi, C.: Soft robotics: a perspective—current trends and prospects for the future. Soft Robot. 1, 5–11 (2014)
Rus, D., Tolley, M.T.: Design, fabrication and control of soft robots. Nature 521, 467 (2015)
Stilli, A., Grattarola, L., Feldmann, H., Wurdemann, H.A., Althoefer, K.: Variable stiffness link (VSL): toward inherently safe robotic manipulators. In: Proceedings - IEEE International Conference on Robotics and Automation (2017)
Stilli, A., Wurdemann, H.A., Althoefer, K.: A novel concept for safe, stiffness-controllable robot links. Soft Robot. 4, 16–22 (2017)
Shiva, A., et al.: Tendon-based stiffening for a pneumatically actuated soft manipulator. IEEE Robot. Autom. Lett. 1(2), 632–637 (2016)
Lipson, H.: Challenges and opportunities for design, simulation, and fabrication of soft robots. Soft Robot. 1(1), 21–27 (2014)
Manti, M., Cacucciolo, V., Cianchetti, M.: Stiffening in soft robotics: a review of the state of the art. IEEE Robot. Autom. Mag. 23, 93–106 (2016)
Blanc, L., Delchambre, A., Lambert, P.: Flexible medical devices: review of controllable stiffness solutions. In: Actuators (2017)
Atkin, P., Paula, J.: Physical Chemistry (2006)
Meirovitch, L.: Analytical Methods in Vibrations (1967)
Althoefer, K.: Neuro-fuzzy motion planning for robotic manipulators. Ph.D. thesis, King’s College, London (1997)
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Ali, A., Althoefer, K., Konstantinova, J. (2019). Dynamic Response Characteristics in Variable Stiffness Soft Inflatable Links. In: Althoefer, K., Konstantinova, J., Zhang, K. (eds) Towards Autonomous Robotic Systems. TAROS 2019. Lecture Notes in Computer Science(), vol 11649. Springer, Cham. https://doi.org/10.1007/978-3-030-23807-0_14
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DOI: https://doi.org/10.1007/978-3-030-23807-0_14
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