기계임피던스 감소기법을 이용한 회전형 전기-유압식 구동기의 모델 없는 토크제어방법
Model-Free Torque Control of Rotary Electro-Hydraulic Actuator using Mechanical Impedance Reduction
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초록
This paper proposes a simple and intuitive model-free torque-tracking control for rotary electro-hydraulic actuators. The undesirable natural-velocity-feedback effect is discussed by introducing mechanical impedance into the electro-hydraulic actuation system. The proposed model-free torque control comprises inner- and outer-loop control to achieve two control objectives. Inner-loop control reduces the mechanical impedance passively and optimally. To improve the tracking accuracy, a certain form of proportional-integral-derivative control is applied to the outer loop. The robustness of the proposed closed-loop system against external disturbances is demonstrated by transforming the two-loop control structure into a disturbance observer form. The proposed method is validated on a single joint electro-hydraulic actuator.
Abstract
This paper proposes a simple and intuitive model-free torque-tracking control for rotary electro-hydraulic actuators. The undesirable natural-velocity-feedback effect is discussed by introducing mechanical impedance into the electro-hydraulic actuation system. The proposed model-free torque control comprises inner- and outer-loop control to achieve two control objectives. Inner-loop control reduces the mechanical impedance passively and optimally. To improve the tracking accuracy, a certain form of proportional-integral-derivative control is applied to the outer loop. The robustness of the proposed closed-loop system against external disturbances is demonstrated by transforming the two-loop control structure into a disturbance observer form. The proposed method is validated on a single joint electro-hydraulic actuator.
참고문헌 (34)
- S. Seok, "Actuator design for high force proprioceptive control in fast legged locomotion", 2012 IEEE, 2012, 1970~1975
- C. Semini, "Design of hyq-a hydraulically and electrically actuated quadruped robot", Institution of Mechanical Engineers, Part I : Journal of Systems and Control Engineering, 225(6), pp.831~849 (2011)
- M. Zinn, "A new actuation approach for human friendly robot design", IEEE International Conference on Robotics and Automation, 2004 (2004)
- S. Wolf, "A new variable stiffness design : Matching requirements of the next robot generation", 2008IEEE International Conference on Robotics and Automation, pp.1741~1746 (2008)
- K. Kong, "A compact rotary series elastic actuator for human assistive systems", IEEE, 2012, pp.17(2), 288~297
- B. Heinrichs, "Position-based impedance control of an industrial hydraulic manipulator", IEEE Control Systems Magazine, 17(1), pp.46~52 (1997)
- S. Tafazoli, "Impedance control of a teleoperated excavator", IEEE Transactions on Control Systems Technology, 10(3), pp.355~367 (2002)
- G. Bilodeau, "A model-based impedance control scheme for high-performance hydraulic joints", 1998IEEE, 1998, 1308~1313
- J. Koivumaki, "Stability-guaranteed impedance control of hydraulic robotic manipulators", IEEE, 2017, pp.22(2), 601~612
- W. S. Newman, "Stability and performance limits of interaction controllers", Journal of Dynamic Systems, Measurement, and Control, 114(4), pp.563~563 (1992)
- M. Dohring, "The passivity of natural admittance control implementations", 2003 IEEE International Conference on Robotics and Automation, pp.3710~3715 (2003)
- M. J. Kim, "A passivitybased admittance control design using feedback interconnections", 2016 IEEE, 2016, 801~807
- S. Dyke, "Role of control-structure interaction in protective system design", Journal of Engineering Mechanics, 121(2), pp.322~338 (1995)
- A. Alleyne, "On the limitations of force tracking control for hydraulic servosystems", Journal of Dynamic Systems, Measurement, and Control, 121(2), pp.184~190 (1999)
- A. H. A. Stienen, "Design of a rotational hydro-elastic actuator for an active upperextremity rehabilitation exoskeleton", 2008 2nd IEEE RAS &EMBS International Conference on Biomedical Robotics and Biomechatronics, pp.881~888 (2008)
- D. W. Robinson, "Force controllable hydroelastic actuator", 2000 ICRA. Millennium Conference. IEEE International Conference on Robotics and Automation. Symposia Proceedings, pp.1321~1327 (2000)
- S. Yoo, "Development of rotary hydro-elastic actuator with robust internalloopcompensator-based torque control and cross-parallel connection spring", Mechatronics, 43, pp.112~123 (2017)
- W. Lee, "Disturbance-observerbased pd control of electro-hydrostatically actuated flexible joint robots", 2017 IEEE, 2017, 2821~2828
- H. Kaminaga, "Backdrivability analysis of electrohydrostatic actuator and series dissipative actuation model", 2010 IEEE International Conference on Robotics and Automation, pp.4204~4211 (2010)
- A. G. Alleyne, "Systematic control of a class of nonlinear systems with application to electrohydraulic cylinder pressure control", IEEE Transactions on Control Systems Technology, 8(4), pp.623~634 (2000)
- P. Nakkarat, "Observer-based backstepping force control of an electrohydraulic actuator", Control Engineering Practice, 17(8), pp.895~902 (2009)
- A. Alleyne, "A simplified approach to force control for electro-hydraulic systems", Control Engineering Practice, 8(12), pp.1347~1356 (2000)
- W. -H. Zhu, "Adaptive output force tracking control of hydraulic cylinders with applications to robot manipulators", Journal of Dynamic Systems, Measurement, and Control, 127(2), pp.206~217 (2005)
- Y. Jianyong, "Nonlinear adaptive robust force control of hydraulic load simulator", Chin. J. Aeronaut, 25(5), pp.766~775 (2012)
- P. M. Marusak, "Constrained model predictive force control of an electrohydraulic actuator", Control Engineering Practice, 19(1), pp.62~73 (2011)
- M. Karpenko, "Electrohydraulic force control design of a hardware-in-the-loop load emulator using a nonlinear qft technique", Control Engineering Practice, 20(6), pp.598~609 (2012)
- L. Laval, "H-infinity-force control of a hydraulic servo-actuator with environmental uncertainties", IEEE International Conference on Robotics and Automation, pp.1566~1571 (1996)
- K. Baghestan, "Robust force control in a novel electro-hydraulic structure using polytopic uncertainty representation", ISA Transactions, 53(6), pp.1873~1880 (2014)
- P. Y. Li, "Toward safe and human friendly hydraulics : The passive valve", Journal of Dynamic System, Measurement, and Control, 122(3), pp.402~409 (2000)
- Y. Choi, "Performance and h-infinity optimality of pid trajectory tracking controller for lagrangian systems", IEEE Transactions on Robotics and Automation, 17(6), pp.857~869 (2001)
- M. J. Kim, "Bringing nonlinear optimality to robot controllers", IEEE Transactions on Robotics, 31(3), pp.682~698 (2015)
- M. J. Kim, "Disturbance-observer-based pd control of flexible joint robots for asymptotic convergence", IEEE Transactions on Robotics, 31(6), pp.1508~1516 (2015)
- T. Boaventura, "On the role of load motion compensation in high-performance force control", 2012 IEEE, 2012, 4066~4071
- T. Boaventura, "Model-based hydraulic impedance control for dynamic robots", IEEE Transactions on Robotics, 31(6), pp.1324~1336 (2015)