Molecular mechanics of skeletal muscle biomechanics and its application in human lower limb active rehabilitation
by Jing Dai
International Journal of Nanotechnology (IJNT), Vol. 17, No. 2/3/4/5/6, 2020

Abstract: Skeletal muscle is the source of motivation for human movement. Elderly people have problems such as walking inconvenience and joint movement difficulties, which are usually caused by insufficient skeletal muscle contraction. In addition, significant changes in the muscle strength of patients such as stroke and stroke paralysis are also closely related to the principles of skeletal muscle contraction. The use of exoskeleton robots to train patients for rehabilitation is essentially to provide patients with motivation to overcome human skeletal muscle contractions when they have insufficient strength to perform basic exercises needed for daily life. Therefore, research on the principles of skeletal muscle contraction and construction of skeletal muscle mechanics models can reveal the principle of human lower limb movement on the one hand, and it is also an essential part of the research on the interaction mechanism between human and exoskeleton robots. In order to realise active rehabilitation training of human lower limbs, a lower limb skeletal robot is designed in this paper. By analysing the mechanical characteristics of molecular motors in skeletal muscles, the biomechanical principles of skeletal muscles have been studied, and the skeletal muscle mechanics model of collective operation mechanism of molecular motors has been constructed from micro to macro. This paper designs a human-computer interaction interface based on EMG signals, studies the force interaction mechanism between humans and bones, and then develops control strategies for skeletal robots. By collecting the EMG signals of muscles, using the muscle mechanics model to predict the torque required for joint movements, and identifying the intention of human movement, active power-up training is achieved according to the intention of the human body.

Online publication date: Wed, 28-Oct-2020

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