Abstract
This paper proposes a high-speed high-backdrivable actuator using a new actuation structure. To realize a small-sized high-torque actuator, a reduction gear is usually used. Because of the current saturation and friction effect of the actuator, the actuator has maximum values of acceleration and rotation speed. A gear with a high gear ratio reduces these two maximum values because of the presence of a reduction mechanism. The trade-off between the output torque and rotation speed exists. Consequently, it is difficult to achieve high-speed motions using a gear. Moreover, the reduction mechanism increases the friction of the motor and deteriorates its backdrivability. Therefore, in this study, a new actuation mechanism is utilized to solve such problems. The new mechanism consists of an electromagnetic clutch and elastic spring. High backdrivability and high-speed motion are achieved by releasing the clutch and transforming the elastic potential energy accumulated by the geared motor into kinetic energy, respectively. In the proposed system, the output rotation speed exceeds the maximum rotation speed obtained after it is reduced by the gear. Finally, the validity of the proposed method is verified experimentally.
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Pratt G, Williamson M (1995) Series elastic actuators. In: Proc. 1995 IEEE/RSJ Int. Conf. Intelligent Robots and Systems, vol 1, pp 399–406. doi:10.1109/IROS.1995.525827
Robinson DW, Pratt JE, Paluska DJ, Pratt GA (1999) Series elastic actuator development for a biomimetic walking robot. In: Proc. (1999) IEEE/ASME Int. Conf. Adv. Intelligent Mechatron, pp 561–568. doi:10.1109/AIM.1999.803231
Kong K, Bae J, Tomizuka M (2009) Control of rotary series elastic actuator for ideal force-mode actuation in human-robot interaction applications. IEEE/ASME Trans Mechatron 14(1):105. doi:10.1109/TMECH.2008.2004561
Tonietti G, Schiavi R, Bicchi A (2005) Design and control of a variable stiffness actuator for safe and fast physical human, robot interaction, In: Proc. (2005) IEEE Int. Conf. Robotics and Autom., pp 526–531. doi:10.1109/ROBOT.2005.1570172
Schiavi R, Grioli G, Sen S, Bicchi A (2008) Vsa-ii: a novel prototype of variable stiffness actuator for safe and performing robots interacting with humans. In Proc. (2008) IEEE Int. Conf. Robotics and Autom. pp 2171–2176. doi:10.1109/ROBOT.2008.4543528
Ugurlu B, Tsagarakis NG, Spyrakos-Papastavridis E, Caldwell DG (2011) Compliant joint modification and real-time dynamic walking implementation on bipedal robot ccub. In: Proc. (2011) IEEE Int. Conf. Mechatron, pp 833–838. doi:10.1109/ICMECH.2011.5971230
Hobbelen D, de Boer T, Wisse M (2008) System overview of bipedal robots flame and tulip: Tailor-made for limit cycle walking. In: Proc. (2008) IEEE/RSJ Int. Conf. Intelligent Robots and Systems, pp 2486–2491. doi:10.1109/IROS.2008.4650728
Abe K, Suga T, Fujimoto Y (2012) Control of a biped robot driven by elastomer-based series elastic actuator. In: Proc. (2012) 12th IEEE Int. Workshop Adv. Motion Control, pp 1–6. doi:10.1109/AMC.2012.6197136
Li J, Jin D, Zhang X, Zhang J, Gruver W (1995) An electrorheological fluid damper for robots. In: Robotics and Automation, 1995. Proceedings, 1995 IEEE International Conference on, vol 3 , pp 2631–2636. doi: 10.1109/ROBOT.1995.525654
Rabinow J (1948) The magnetic fluid clutch. Trans Am Inst Electr Eng 67(2):1308. doi: 10.1109/T-AIEE.1948.5059821
Chew CM, Hong GS, Zhou W (2004) Series damper actuator: a novel force/torque control actuator. In: Proc. 2004 4th IEEE/RAS Int. Conf. Humanoid Robots, vol 2, pp 533–546. doi:10.1109/ICHR.2004.1442669
Furusho J, Takesue N (2016) Research and development of functional fluid mechatronics, rehabilitation systems, and mechatronics of flexible drive systems. J Robot Mechatron 28(1):5
Najmaei N, Asadian A, Kermani MR, Patel RV (2016) Design and performance evaluation of a prototype mrf-based haptic interface for medical applications. IEEE/ASME Trans Mechatron 21(1):110. doi:10.1109/TMECH.2015.2429140
Chapuis D, Michel X, Gassert R, Chew CM, Burdet E, Bleuler H (2007) A haptic knob with a hybrid ultrasonic motor and powder clutch actuator. In: Proc. Second joint EuroHaptics Conf. Symposium on Haptic Interfaces for Virtual Environ. Teleoperator Systems, pp 200–205. doi:10.1109/WHC.2007.5
Lauzier N, Gosselin C (2011) Series clutch actuators for safe physical human–robot interaction. In: Proc. (2011) IEEE Int. Conf. Robotics and Automation, pp 5401–5406. doi:10.1109/ICRA.2011.5979601
Rouse EJ, Mooney LM, Martinez-Villalpando EC, Herr HM (2013) Clutchable series-elastic actuator: design of a robotic knee prosthesis for minimum energy consumption. In: Proc. IEEE Int. Conf. Rehabilitation. Robotics (ICORR), pp 1–6. doi:10.1109/ICORR.2013.6650383
Haeufle DFB, Taylor MD, Schmitt S, Geyer H (2012) A clutched parallel elastic actuator concept: towards energy efficient powered legs in prosthetics and robotics. In: Proc. 4th IEEE RAS EMBS Int. Conf. Biomedical Robotics, 2012, pp 1614–1619. doi:10.1109/BioRob.2012.6290722
Plooij M, van Nunspeet M, Wisse M, Vallery H (2015) Design and evaluation of the bi-directional clutched parallel elastic actuator (bic-pea). In: Proc. IEEE Inter. Conf. Robotics and Automation (ICRA), 2015, pp 1002–1009. doi:10.1109/ICRA.2015.7139299
Leach D, Gunther F, Maheshwari N, Iida F (2014) Linear multimodal actuation through discrete coupling. IEEE/ASME Trans Mechatron 19(3):827. doi:10.1109/TMECH.2013.2261532
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This work was partially supported by JSPS KAKENHI.
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Miura, K., Katsura, S. High-speed and high-backdrivable actuation system considering variable-structured elastic design. Prod. Eng. Res. Devel. 11, 117–124 (2017). https://doi.org/10.1007/s11740-017-0720-0
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DOI: https://doi.org/10.1007/s11740-017-0720-0