Archive for Ноябрь, 2003

Theoretical Analysis and Experimental Verification of a Monopropellant Driven Free Piston Hydraulic Pump

Дата: Ноябрь 21st, 2003 Автор:
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  • Тип контента: Научная статья
  • Номер документа: 7778
  • Название документа: Theoretical Analysis and Experimental Verification of a Monopropellant Driven Free Piston Hydraulic Pump
  • Номер (DOI, IBSN, Патент): Не заполнено
  • Изобретатель/автор: Timothy G. McGee, Justin W. Raade, H. Kazerooni
  • Правопреемник/учебное заведение: Human Engineering Laboratory Department of Mechanical Engineering University of California-Berkeley
  • Дата публикации документа: 2003-11-21
  • Страна опубликовавшая документ: США
  • Язык документа: Английский
  • Наименование изделия: Не заполнено
  • Источник: 2003 ASME International Mechanical Engineering Congress Was
  • Вложения: Да
  • Аналитик: Глаголева Елена

The authors present a novel power supply for mobile robotic systems. A monopropellant (e.g. hydrogen peroxide) decomposes into high temperature gases, which drive a free piston hydraulic pump (FPHP). The elimination of fuel/oxidizer mixing allows the design of simple, lightweight systems capable of operation in oxygen free environments. A thermodynamic analysis has been performed, and an experimental FPHP has been built and tested. The prototype successfully pumped hydraulic fluid, although the flow rate was limited by the off-the-shelf components used.

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Категория: Научные статьи | Нет комментариев »


Bionic Arm: робот может быть правой рукой человека

Дата: Ноябрь 13th, 2003 Автор:
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  • Тип контента: Новостная статья
  • Номер документа: 2292
  • Название документа: Bionic Arm: робот может быть правой рукой человека
  • Номер (DOI, IBSN, Патент): Не заполнено
  • Изобретатель/автор: Не заполнено
  • Правопреемник/учебное заведение: Не заполнено
  • Дата публикации документа: 2003-11-13
  • Страна опубликовавшая документ: Россия
  • Язык документа: Русский
  • Наименование изделия: Не заполнено
  • Источник: http://www.membrana.ru/particle/2700
  • Вложения: Не заполнено
  • Аналитик: Ридна Украина)))

В кино робототехнический протез руки, наверное, все видели. Обычно там злодеи такие носят. С крюком на конце. А людей с синтетическими частями тела, это тоже все знают, называют обычно киборгами. А слыхали о человеке, потерявшем правую руку и 10 лет пользовавшемся первой в мире бионической рукой?

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Категория: Кисти рук | Нет комментариев »


Development and Testing of a Haptic Interface to Assist and Improve the Manipulation Functions in Virtual Environments for Persons with Disabilities

Дата: Ноябрь 12th, 2003 Автор:
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  • Тип контента: Научная статья
  • Номер документа: 7658
  • Название документа: Development and Testing of a Haptic Interface to Assist and Improve the Manipulation Functions in Virtual Environments for Persons with Disabilities
  • Номер (DOI, IBSN, Патент): Не заполнено
  • Изобретатель/автор: Rohit Tammana
  • Правопреемник/учебное заведение: Department of Mechanical Engineering College of Engineering University of South Florida
  • Дата публикации документа: 2003-11-12
  • Страна опубликовавшая документ: США
  • Язык документа: Английский
  • Наименование изделия: Не заполнено
  • Источник: Не заполнено
  • Вложения: Да
  • Аналитик: Глаголева Елена

Robotics in rehabilitation provides considerable opportunities to improve the quality of life for persons with disabilities. Computerized and Virtual Environment (VE) training systems for persons with disabilities, many of which utilize the haptic feedback, have gained increasing acceptance in the recent years. Our methodology here is based on creating virtual environments connected to a haptic interface as an input device. This robotic setup introduces the advantages of the haptic rendering features in the environment and also provides tactile feedback to the patients. This thesis aims to demonstrate the efficacy of assistance function algorithms in rehabilitation robotics in virtual environments. Assist functions are used to map limited human input to motions required to perform complex tasks. The purpose is to train individuals in task-oriented applications to insure that they can be incorporated into the workplace. Further, Hidden Markov Model (HMM) based motion recognition and skill learning are used for improving the skill levels of the users. For the Hidden Markov Model based motion recognition, the user’s motion intention is combined with environment information to apply an appropriate assistance function. We used this algorithm to perform a commonly used vocational therapy test referred to as the box and the blocks test. The Hidden Markov Model based skill approach can be used for learning human skill and transferring the skill to persons with disabilities. A relatively complex task of moving along a labyrinth is chosen as the task to be modeled by HMM. This kind of training allows a person with disability to learn the skill and improve it through practice. Its application to motion therapy system using a haptic interface helps in improving their motion control capabilities, tremor reduction and upper limb coordination. The results obtained from all the tests demonstrated that various forms of assistance provided reduced the execution times and increased the motion performance in chosen tasks. Two persons with disabilities volunteered to perform the above tasks and both of the disabled subjects expressed an interest and satisfaction with the philosophy behind these concepts.

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Категория: Научные статьи | Нет комментариев »


Exoskeleton for human upper-limb motion support

Дата: Ноябрь 10th, 2003 Автор:
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  • Тип контента: Научная статья
  • Номер документа: 654
  • Название документа: Exoskeleton for human upper-limb motion support
  • Номер (DOI, IBSN, Патент): 10.1109/ROBOT.2003.1241921
  • Изобретатель/автор: Watanabe, K., Tanaka, T, Kiguchi, K., Fukuda, T.
  • Правопреемник/учебное заведение: Dept. of Adv. Syst. Control Eng., Saga Univ., Japan
  • Дата публикации документа: 2003-11-10
  • Страна опубликовавшая документ: Япония
  • Язык документа: Английский
  • Наименование изделия: Не заполнено
  • Источник: http://ieeexplore.ieee.org/search/freesrchabstract.jsp?tp=&a
  • Вложения: Да
  • Аналитик: Дмитрий Соловьев

We have been developing exoskeletons (exoskeletal robots) for assisting the motion of physically weak persons such as elderly persons or slightly disabled persons in daily life. In this paper, we propose a 3 DOF exoskeleton and its control system to assist the human upper-limb motion (shoulder joint motion and elbow joint motion) of physically weak persons. The proposed robot automatically assists the human motion mainly based on the skin surface electromyogram (EMG) signals. Fuzzy control has been applied to realize the sophisticated real-time control of the exoskeleton. Experiment has been performed to evaluate the proposed exoskeleton.

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Категория: Научные статьи | Нет комментариев »