This paper reports the integration of a kinematic model of the human hand during cylindrical grasping, with specific focus on the accurate mapping of thumb movement during grasping motions, and a novel, multi-degree-of-freedom assistive exoskeleton mechanism based on this model. The model includes thumb maximum hyper-extension for grasping large objects (~>;50mm). The exoskeleton includes a novel four-bar mechanism designed to reproduce natural thumb opposition and a novel synchro-motion pulley mechanism for coordinated finger motion. A computer aided design environment is used to allow the exoskeleton to be rapidly customized to the hand dimensions of a specific patient. Trials comparing the kinematic model to observed data of hand movement show the model to be capable of mapping thumb and finger joint flexion angles during grasping motions. Simulations show the exoskeleton to be capable of reproducing the complex motion of the thumb to oppose the fingers during cylindrical and pinch grip motions.

Категория: Ищем научные статьи | Нет комментариев »

This paper presents an analysis of the human biomechanical considerations related to the development of lower limbexoskeletons. Factors such as kinematic alignment and compatibility, joint range of motion, maximum torque, and joint bandwidth are discussed in the framework of a review of the design specifications for exoskeleton prototypes discussed in the literature. From this analysis, we discuss major gaps in the research related to the topic and how those might be filled.

(далее…)

Категория: Научные статьи | Нет комментариев »

Возможность пройти соответствующее обучение получат по одному представителю следующих команд:
«Лесной дозор» (система мониторинга леса и раннего обнаружения лесных пожаров. Представляет собой программную платформу для организации работ по мониторингу леса с помощью видеонаблюдения, тепловых и инфракрасных датчиков и т.п.);
«Лазерная наружная реклама» (новое направление наружной рекламы, заключающееся в создании лазерного проектора, демонстрирующего изображение телевизионного качества);

«Обнаружитель людей при катастрофах» (позволяет найти людей при техногенных и природных катастрофах по их мобильному телефону);

«EXOMAN: новый класс экзоскелетов» – проект заключается в разработке и коммерциализации нового класса экзоскелетов (устройств, предназначенных для увеличения физического потенциала человека за счет внешнего каркаса);

«Новое поколение высокоэффективных сорбционных фильтровальных материалов для очистки водных сред (FilLis)» – проект предполагает продвижение сорбционных фильтровальных материалов серии FilLis на рынки Индии, Китая, России, США, а также стран СНГ и ЕС.

(далее…)

Категория: EXOMEN | 1 Комментарий »

Stroke patients often have flexor hypertonia and finger extensor weakness, which makes it difficult to open their affected hand for functional grasp. Because of this impairment, hand rehabilitation after stroke is essential for restoring functional independent lifestyles. The goal of this study is to develop a passive, lightweight, wearable device to assist with hand function during performance of activities of daily living. The device, Hand Spring Operated Movement Enhancer (HandSOME), assists with opening the patient’s hand using a series of elastic cords that apply extension torques to the finger joints and compensates for the flexor hypertonia. Device design and calibration are described as well as functional and usability testing with stroke subjects with a wide range of hand impairments. In initial testing with eight stroke subjects with finger flexor hypertonia, use of the HandSOME significantly increased range of motion (p <; 0.001) and functional ability (p=0.002) . There was some decrease in grip strength with the HandSOME device at the subject’s ideal setting, however this was not statistically significant (p=0.167) and did not seem to have a significant effect on function. Overall HandSOME shows promise as a training tool to facilitate repetitive task practice for improving hand function in stroke patients. HandSOME can be used as part of a home-based therapy program, or as an orthotic for replacing lost function.

(далее…)

Категория: Научные статьи | Нет комментариев »

Фрагмент из книги футуролога Джорджа Фридмана «Следующие 10 лет»

(далее…)

Категория: нед. статьи | Нет комментариев »