Впервые в мире создана машина, напрямую преобразующая энергию света в движение вала. Такое необычное устройство показала миру группа учёных под руководством профессора Томики Икеда (Tomiki Ikeda) из Токийского технологического института (Tokyo Institute of Technology).

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Категория: Двигатели | 4 комментария »

A motion assistance device has a biological signal detection means for detecting a biological signal from the wearer of the device; a motion assistance device installation member having a drive source for applying torque acting to the wearer by use of each joint of the wearer as a rotating shaft; a control means for controlling the drive source to generate torque corresponding to the biological signal detected by the biological signal detection mean; a drive torque estimation means for estimating the drive torque generated by the drive source; a joint angle detection means for detecting angular displacement of a joint; and a parameter identification means for substituting the drive torque estimated by the drive torque estimation means and the angular displacement detected by the joint angle detection means into an equation of motion to specify the wearer-specific dynamics parameter, the equation relating to the entire system and including wearer-specific dynamics parameter. The control means controls the drive source according to a predetermined control method, based on the equation of motion into which the dynamics parameter identified by the parameter identification means is substituted.

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Категория: Патенты | Нет комментариев »

An adjustable Robotic Tendon is a spring based linear actuator in which the properties of a spring are crucial to its successful use in a gait assistance device. Like its human analog, the adjustable Robotic Tendon uses its inherent elastic nature to both reduce peak power and energy requirements for its motor. In the ideal example, peak power required of the motor for ankle gait is reduced from 250W to just 81W. In addition, ideal energy requirements are reduced from nearly 36 Joules to just 25 Joules per step. Using this approach, an initial prototype is expected to provide 100% of the power and energy neccessary for ankle gait in a compact 0.84kg package. This weight is 8 times less than that predicted for an equivalent direct drive approach.

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Категория: Научные статьи | Нет комментариев »

A method for obtaining an assist torque to be applied to a human joint, in a human assist system in order to reduce the load on muscles, according to the present invention comprises the step of obtaining a moment due to gravity, acting on a joint of each human segment, based on equations of force and moment balance on each segment. The method further comprises the step of obtaining an assist torque to be applied to the joint to compensate for the moment due to gravity, acting on the joint. In one embodiment of the present invention, various criteria are used such as mechanical energy, metabolic energy and/or a stability/equilibrium factor. In addition, the present invention can account for the situation where there is substantially no relative motion between segments of a given joint and thus, where the mechanical energy component of gravity compensation is approximately zero.

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Категория: Патенты | Нет комментариев »

A rehabilitation tool based on an innovative mimetic active orthosis for hemiplegics is presented. It follows concepts of neuronal learning from afferent information from movements, similar to those lost after brain damage. An artificial gait pattern is applied on knee and hip articulations of a functional modified limb by using an exoskeleton powered by pneumatic muscles.

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Категория: Научные статьи | Нет комментариев »