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Control of an Exoskeleton for Realization of Aquatic Therapy Effects

机译:控制外骨骼以实现水疗效果

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摘要

Exoskeletons are attracting great attention as a new means of rehabilitation devices. In such applications, control algorithms of exoskeletons are often inspired by nature for natural and effective assistance for patients. In this paper, a control algorithm inspired by aquatic therapy is introduced. Aquatic therapy provides various beneficial effects for rehabilitation based on useful properties of water, e.g., buoyancy and drag. The proposed controller calculates joint torques equivalent to the buoyant and drag forces. Then, an exoskeleton-type assistive device generates the calculated joint torques to provide the similar effects as aquatic therapy. In this paper, the Sogang University biomedical assist robot is utilized as a testbed. This paper also discusses the mechanical impedance of actuators, which obstructs implementation of controllers in practice. The resistive forces generated by actuators are precisely modeled and compensated to realize the control algorithm inspired by aquatic therapy correctly and effectively.
机译:外骨骼作为一种康复设备的新方法正引起人们的极大关注。在这样的应用中,外骨骼的控制算法通常受自然启发,为患者提供自然有效的帮助。本文介绍了一种受水生疗法启发的控制算法。水生疗法基于水的有用特性(例如浮力和阻力)为康复提供了多种有益的作用。所提出的控制器计算的关节扭矩等于浮力和阻力。然后,外骨骼型辅助设备生成计算出的关节扭矩,以提供与水生疗法相似的效果。本文利用西江大学生物医学辅助机器人作为试验台。本文还讨论了执行器的机械阻抗,这在实践中阻碍了控制器的实现。对执行器产生的阻力进行精确建模和补偿,以正确有效地实现水生疗法启发的控制算法。

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