Modelling and simulation of a system for verticalization and aiding the motion of individuals suffering from paresis of the lower limbs

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Abstract

There has been designed a device for verticalization and aiding the gait of individuals suffering from paresis of the lower limbs. It can be counted in the category of so-called “wearable robots”, whose task is to replace or aid human limbs. Dependently on the function realized, these robots are classified into one of the following three groups:

a) exoskeletons - strengthening the force of human muscles beyond their natural abilities,

b) orthotic robots - restoring lost or weakened functions of human limbs,

c) prosthetic robots - replacing an amputated limb.

A significant feature of the device that has been designed is the fact that it has not to replace human limbs, but only restore them to their lost motor capabilities. Thus, according to the presented classification, it is an orthotic robot. Unlike in the case of the existing systems for verticalization, the gait is to be realized in a way that is automatic to the highest possible extent, keeping the user involved as little as possible, and the device is to imitate the natural movements of man with the highest fidelity.

Within the works on the system for verticalization and aiding the motion, a simulation model of the device was created. It includes a structure of the robot, a model of the actuators and a model of the human body that constitutes the load for the driving units. Then, simulation studies were carried out, including evaluation of the power demand of the device as well as the influence of the gait rate and of the length of the steps on the operation of the system.

[1] J.L. Pons, Wearable Robots: Biomechatronic Exoskeletons, John Wiley & Sons, Chichester, 2008.

[2] T. Bober and J. Zawadzki, Biomechanics of the Human Motion System, BK Publishing House, Wrocław, 2000, (in Polish).

[3] W. Oleksiuk, Selected Problems of the Design of Precision Instruments, WPW, Warsaw, 1975, (in Polish).

[4] W. Pełczewski, Thermal Problems in Electric Machines, PWT, Warsaw, 1956, (in Polish).

[5] M. Dollar and H. Herr, “Lower extremity exoskeletons and active orthoses: challenges and state-of-the-art”, IEEE Trans. on Robotics 24 (1), 144-158 (2008).

[6] R. Bogue, “Exoskeletons and robotic prosthetics: A review of recent developments”, Industrial Robot: Int. J. 36, 421-427 (2009).

[7] F. Casalo, S. Cinquemani, and M. Cocetta, “On active lower limb exoskeleton actuator”, Proc. 5th Int. Sym. Mechatronics and its Applications 1, CD-ROM (2008).

[8] Zoss, H. Kazerooni, and A. Chu, “On the mechanical design of the berkeley lower extremity exoskeleton (BLEEX)”, IEEE/RSJ Int. Conf. Intelligent Robots and Systems 1, 3465-3472 (2005).

[9] D. Ames, R. Vasudevan, and R. Bajcsy, “Human-data based cost of bipedal robotic walking”, Proc. 14th Int. Conf. Hybrid Sys.: Computation and Control 1, 153-162 (2011).

[10] J. W. Grizzle, C. Chevallereau, A.D. Ames, and R.W. Sinnet, “3D bipedal robotic walking: models, feedback control, and open problems”, IFAC Symp. on Nonlinear Control Systems (NOLCOS) 1, CD-ROM (2010).

[11] H. Kazerooni, J.-L. Racine, L. Huang, and R. Steger, “On the control of the berkeley lower extremity exoskeleton (BLEEX)”, Proc. IEEE Int. Conf. Robotics and Automation 1, 4353-4360 (2005).

[12] P. Shi, Y. Zhang and X. Yang, “Lower extremity exoskeleton control and stability analysis based on virtual prototyping technique”, Proc. Int. Conf. Computer Science and Software Engineering 1, 1131-1134 (2008).

[13] T. Zielińska, “Autonomous walking machines-discussion of the prototyping problems”, Bull. Pol. Ac.:Tech. 58 (3), 443-451 (2010).

[14] D.A. Winter and L.A. Gilchrist, “A multisegment computer simulation of natural human gait”, IEEE Trans. on Rehabilitation Engineering 5 (4), 290-299 (1997).

[15] D.A. Winter and J.J. Eng, “Kinetic analysis of the lower limbs during walking: what information can be gained from a threedimensional model?”, J. Biomechanics 28 (6), 753-758 (1995).

[16] S.-H. Pyo, A. ¨Ozer, and J. Yoon, “A novel design for lower extremity gait rehabilitation exoskeleton inspired by biomechanics”, Int. Conf. Control, Automation and Systems 1, 1806-1811 (2010).

[17] L. Vaughan, B.L. Davis, and J. C.O’Connor, Dynamics of Human Gait, Kiboho Publishers, Cape Town, 1999.

[18] H. Kazerooni, R. Steger, and L. Huang, “Hybrid control of the Berkley Lower Extremity Exoskeleton (BLEEX)”, Int. J. Robotics Research 25 (5-6), 561-573 (2006).

[19] M. Ceccarelli, G. Carbone, and E. Ottaviano, “Multi criteria optimum design of manipulators”, Bull. Pol. Ac.: Tech. 53 (1), 9-18 (2005).

Bulletin of the Polish Academy of Sciences Technical Sciences

The Journal of Polish Academy of Sciences

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