A method for improving scaling bilateral control by integration of physical and control scaling ratio

This paper proposes a novel scaling method in bilateral control. In general, scaling factor of position and force is set into the controller. In this case, force is scaled not by only reaction force from environment but external force such as friction. Therefore, it is difficult to get haptic sense from environmental reaction force. In the proposed method, scaling ratio is defined by the product of physical scaling ratio and control scaling ratio. By using this method, the influence of external force is decreased compared with the conventional scaling method. Hence, the operator can feel the environmental force. In this research, proposed method is applied to Electro-Hydraulic Transmission System (EHTS). EHTS is a kind of actuating system which is consisted of two syringes, tube and liquid. In the case of EHTS, physical scaling is defined by the ratio of diameter of both syringes. The validity of the proposed method is confirmed by experimental results.

[1]  Kouhei Ohnishi,et al.  Realization of advanced hybrid control through oblique coordinate control , 2010 .

[2]  Shigeyasu Kawaji,et al.  Biped Locomotion Control with Compliance , 1996 .

[3]  S. Yamada,et al.  Compliance control for biped locomotion robot , 1997, 1997 IEEE International Conference on Systems, Man, and Cybernetics. Computational Cybernetics and Simulation.

[4]  Septimiu E. Salcudean,et al.  Analysis and evaluation of stability and performance robustness for teleoperation control architectures , 2000, Proceedings 2000 ICRA. Millennium Conference. IEEE International Conference on Robotics and Automation. Symposia Proceedings (Cat. No.00CH37065).

[5]  Akihito Sano,et al.  Personal scaling on micro-teleoperation , 2000, 2000 26th Annual Conference of the IEEE Industrial Electronics Society. IECON 2000. 2000 IEEE International Conference on Industrial Electronics, Control and Instrumentation. 21st Century Technologies.

[6]  Dale A. Lawrence.  Stability and transparency in bilateral teleoperation , 1993, IEEE Trans. Robotics Autom..

[7]  Seiichiro Katsura,et al.  Achievement of high scaling gain macro-micro bilateral control system , 2013, IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society.

[8]  Toshiyuki Murakami,et al.  Torque sensorless control in multidegree-of-freedom manipulator , 1993, IEEE Trans. Ind. Electron..

[9]  Blake Hannaford,et al.  A design framework for teleoperators with kinesthetic feedback , 1989, IEEE Trans. Robotics Autom..

[10]  Y Kamei,et al.  Robotic Forceps Manipulator With a Novel Bending Mechanism , 2010, IEEE/ASME Transactions on Mechatronics.

[11]  Kazuo Tanie,et al.  Ma" Bilateml Tehoperation based on OperaiionalForce Feedfoiwaid - Operational Force Feedforward Bilateral Teleoperation and its Dexterity - , 1998 .

[12]  Kouhei Ohnishi,et al.  Electro-hydraulic force transmission for rehabilitation exoskeleton robot , 2014, 2014 IEEE 13th International Workshop on Advanced Motion Control (AMC).

[13]  Kouhei Ohnishi,et al.  An experimental validation of electro-hydraulic transmission for haptic teleoperation - Comparison with thrust wire - , 2014, 2014 IEEE 23rd International Symposium on Industrial Electronics (ISIE).

[14]  Kouhei Ohnishi.  Robust Motion Control by Disturbance Observer , 1996, J. Robotics Mechatronics.

[15]  Kouhei Ohnishi,et al.  Large scale micro-macro bilateral control using piezoelectric cantilever with plant nominalization , 2013, IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society.

[16]  S. Katsura,et al.  Transmission of Force Sensation by Micro-Macro Bilateral Control with Respect to Standardized Modal Space , 2007, 2007 IEEE International Conference on Mechatronics.