Download or read book Design and Realization of a Finger Exoskeleton for Astronauts Extravehicular Activity EVA Glove written by Mohamad Mehdi Seyed Mousavi and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Glove Exoskeleton for Extra vehicular Activities written by Alain Favetto and published by . This book was released on 2014* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Innovative Hand Exoskeleton Design for Extravehicular Activities in Space written by Pierluigi Freni and published by Springer. This book was released on 2014-06-23 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental conditions and pressurized spacesuits expose astronauts to problems of fatigue during lengthy extravehicular activities, with adverse impacts especially on the dexterity, force and endurance of the hands and arms. A state-of-the-art exploration in the field of hand exoskeletons revealed that available products are unsuitable for space applications because of their bulkiness and mass. This book proposes a novel approach to the development of hand exoskeletons, based on an innovative soft robotics concept that relies on the exploitation of electroactive polymers operating as sensors and actuators, on a combination of electromyography and mechanomyography for detection of the user’s will and on neural networks for control. The result is a design that should enhance astronauts’ performance during extravehicular activities. In summary, the advantages of the described approach are a low-weight, high-flexibility exoskeleton that allows for dexterity and compliance with the user’s will.
Download or read book Design and Control of a Hand Exoskeleton for Use in Extravehicular Activities written by Bobby Lynn Shields and published by . This book was released on 1993 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Unpowered Exoskeleton to Reduce Astronaut Hand Fatigue During Microgravity EVA written by Alan John Carey and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Astronaut hand fatigue during Extravehicular Activity (EVA) and EVA training is a critical risk in human space exploration. Improved glove designs over the past forty years have reduced hand fatigue, but limitations of the technology prevent major improvements to reduce hand fatigue. Therefore, a mechanism to assist astronauts by reducing hand fatigue was explored. Many organizations have already developed exoskeletons to assist astronauts, but all mechanisms developed required electrically powered actuators and control systems to enhance grip strength. However, astronauts already possess the strength required to actuate the glove; what is needed is a method to reduce fatigue without introducing electromechanical complexity. A passive mechanical system was developed as a proof-of-concept to test the feasibility of an unpowered exoskeleton to maintain static grip around an object. The semi- rigid nature of an inflated pressure glove provided an ideal substrate to mount a mechanism and associated components to allow an astronaut to release his/her grip inside the glove while maintaining attitude, as the mechanism will keep the glove closed around an object.Three prototypes were fabricated and tested to evaluate the architecture. The final two prototypes were tested on a real pressure suit glove at Final Frontier Design (FFD), and the third mechanism demonstrated attachment and basic operating principles. At University of California (UC) Davis, pressure glove analogs were fabricated from a baseball batting glove and polystyrene to simulate a real pressure glove without the risk of testing in a reduced pressure environment (i.e. a glove box). Testing of the third prototype showed a reduction in fatigue as measured by Maximum Voluntary Contraction (MVC) grip force over a 30 second period when the mechanism assisted gripping an object.
Download or read book Glove Enabled Computer Operations GECO written by Richard J. Adams and published by . This book was released on 2013 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of a Prototype Movement Assistance System for Extravehicular Activity Gloves written by Tyler Nathaniel Hill and published by . This book was released on 2015 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wearable Robotics written by Jacob Rosen and published by Academic Press. This book was released on 2019-11-16 with total page 551 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wearable Robotics: Systems and Applications provides a comprehensive overview of the entire field of wearable robotics, including active orthotics (exoskeleton) and active prosthetics for the upper and lower limb and full body. In its two major sections, wearable robotics systems are described from both engineering perspectives and their application in medicine and industry. Systems and applications at various levels of the development cycle are presented, including those that are still under active research and development, systems that are under preliminary or full clinical trials, and those in commercialized products. This book is a great resource for anyone working in this field, including researchers, industry professionals and those who want to use it as a teaching mechanism. Provides a comprehensive overview of the entire field, with both engineering and medical perspectives Helps readers quickly and efficiently design and develop wearable robotics for healthcare applications
Download or read book Force endurance Capabilities of Extravehicular Activity EVA Gloves at Different Pressure Levels written by Ram J. Bishu and published by . This book was released on 1993 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Influence of Robotic Grip Augmentation on Reducing Muscular Effort and Fatigue During Spacesuit Glove Use written by Kaci Erin Madden and published by . This book was released on 2016 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hand, finger, and forearm fatigue are amongst the top three most common types of injuries endured by astronauts during EVA missions. The three-layered extravehicular activity (EVA) spacesuit gloves, a 4.3psi spacesuit pressure differential, and the heavy reliance upon using the hands in zero gravity contribute to this high statistic. The Spacesuit RoboGlove (SSRG), a Phase VI spacesuit glove modified with robotic grasp assist capabilities, has been developed to improve astronaut performance and reduce the risk of injury during EVA missions. A preliminary study has shown that the SSRG can consistently augment the user’s grip strength, however, further analysis is needed to evaluate its potential to reduce muscular effort and forearm fatigue. Thus, the purpose of this study was to quantify spacesuit glove-induced muscular effort and forearm fatigue to: i) identify the muscles that are in need of robotic assistance while wearing a spacesuit glove, and ii) evaluate the influence of robotic grip assistance on diminishing spacesuit glove-induced forearm muscle effort and fatigue. Six subjects performed a fatiguing task consisting of cyclic dynamic gripping interspersed with constant force contractions. Each subject performed the task under three conditions: barehand, Phase VI glove pressurized to 4.3 psi (SSG), and SSRG pressurized to 4.3 psi. Surface electromyography (sEMG) from seven muscles of the forearm (flexor digitorum superficialis (FDS), flexor carpi radialis (FCR), flexor carpi ulnaris (FCU), extensor digitorum (ED), extensor carpi radialis longus (ECRL), extensor carpi ulnaris (ECU), and extensor indices (EI)), force data from a hand dynamometer, and subjective fatigue ratings were collected concurrently throughout each condition. Trends in integrated EMG (iEMG), amplitude (RMS), and median frequency (MF) of the sEMG signals were used to quantify expended effort and fatigue-induced changes within each muscle. These metrics were compared across the three experimental conditions. Subjective fatigue ratings revealed that SSRG aided the subjects in feeling less fatigued over the first half of the experiment. iEMG showed that the FDS, FCR, and ED muscles exerted the most effort and were most prone to fatigue during the SSG condition. The SSRG helped to reduce muscular effort in the flexor muscles (FDS, FCR, and FCU) compared to the SSG condition. However, the SSRG increased muscular effort of the extensors, most notably ED, compared to the SSG condition. Results from four subjects showed that the SSRG was able to reduce muscular effort to near barehanded levels for the FDS, FCR, and ECU muscles. These results indicate that the SSRG shows promise as a grip assist device that reduces expended effort of the flexor muscles, however, further design improvements are still needed. For most conditions, the expected trends in fatigue metrics (i.e. decrease in MF and increase in RMS) were not seen. Modifications to the protocol should be made for future experiments to improve the outcome of these metrics and allow for a more conclusive argument to be made concerning the effectiveness of SSRG in reducing forearm muscle fatigue.
Download or read book Engineering a Robotic Exoskeleton for Space Suit Simulation written by Forrest Edward Meyen and published by . This book was released on 2013 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: Novel methods for assessing space suit designs and human performance capabilities are needed as NASA prepares for manned missions beyond low Earth orbit. Current human performance tests and training are conducted in space suits that are heavy and expensive, characteristics that constrain possible testing environments and reduce suit availability to researchers. Space suit mock-ups used in planetary exploration simulations are light and relatively inexpensive but do not accurately simulate the joint stiffness inherent to space suits, a key factor impacting extravehicular activity performance. The MIT Man-Vehicle Laboratory and Aurora Flight Sciences designed and built an actively controlled exoskeleton for space suit simulation called the Extravehicular Activity Space Suit Simulator (EVA S3), which can be programmed to simulate the joint torques recorded from various space suits. The goal of this research is to create a simulator that is lighter and cheaper than a traditional space suit so that it can be used in a variety of testing and training environments. The EVA S3 employs pneumatic actuators to vary joint stiffness and a pre-programmed controller to allow the experimenter to apply torque profiles to mimic various space suit designs in the field. The focus of this thesis is the design, construction, integration, and testing of the hip joint and backpack for the EVA S3. The final designs of the other joints are also described. Results from robotic testing to validate the mechanical design and control system are discussed along with the planned improvements for the next iteration of the EVA S3. The fianl EVA S3 consists of a metal and composite exoskeleton frame with pneumatic actuators that control the resistance of motion in the ankle, knee, and hip joints, and an upper body brace that resists shoulder and elbow motions with passive spring elements. The EVA S3 is lighter (26 kg excluding the tethered components) and less expensive (under $600,000 including research, design, and personnel) than a modem space suit. Design adjustments and control system improvements are still needed to achieve a desired space suit torque simulation fidelity within 10% root-mean-square error.
Download or read book Novel Design and Applications of Robotics Technologies written by Zhang, Dan and published by IGI Global. This book was released on 2018-09-14 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: Through expanded intelligence, the use of robotics has fundamentally transformed a variety of fields, including manufacturing, aerospace, medical, social services, and agriculture. Providing successful techniques in robotic design allows for increased autonomous mobility, which leads to a greater productivity level. Novel Design and Applications of Robotics Technologies provides innovative insights into the state-of-the-art technologies in the design and development of robotic technologies and their real-world applications. The content within this publication represents the work of interactive learning, microrobot swarms, and service robots. It is a vital reference source for computer engineers, robotic developers, IT professionals, academicians, and researchers seeking coverage on topics centered on the application of robotics to perform tasks in various disciplines.
Download or read book Human Performance Technology Concepts Methodologies Tools and Applications written by Management Association, Information Resources and published by IGI Global. This book was released on 2019-05-03 with total page 1946 pages. Available in PDF, EPUB and Kindle. Book excerpt: Business practices are rapidly changing due to technological advances in the workplace. Organizations are challenged to implement new programs for more efficient business while maintaining their standards of excellence and achievement. Human Performance Technology: Concepts, Methodologies, Tools, and Applications is a vital reference source for the latest research findings on real-world applications of digital tools for human performance enhancement across a variety of settings. This publication also examines the utilization of problem-based instructional techniques for challenges and solutions encountered by industry professionals. Highlighting a range of topics such as performance support systems, workplace curricula, and instructional technology, this multi-volume book is ideally designed for business executives and managers, business professionals, human resources managers, academicians, and researchers actively involved in the business industry.
Download or read book Haptics Technologies written by Abdulmotaleb El Saddik and published by Springer Science & Business Media. This book was released on 2011-09-15 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: The term “haptics” refers to the science of sensing and manipulation through touch. Multiple disciplines such as biomechanics, psychophysics, robotics, neuroscience, and software engineering converge to support haptics, and generally, haptic research is done by three communities: the robotics community, the human computer interface community, and the virtual reality community. This book is different from any other book that has looked at haptics. The authors treat haptics as a new medium rather than just a domain within one of the above areas. They describe human haptic perception and interfaces and present fundamentals in haptic rendering and modeling in virtual environments. Diverse software architectures for standalone and networked haptic systems are explained, and the authors demonstrate the vast application spectrum of this emerging technology along with its accompanying trends. The primary objective is to provide a comprehensive overview and a practical understanding of haptic technologies. An appreciation of the close relationship between the wide range of disciplines that constitute a haptic system is a key principle towards being able to build successful collaborative haptic environments. Structured as a reference to allow for fast accommodation of the issues concerned, this book is intended for researchers interested in studying touch and force feedback for use in technological multimedia systems in computer science, electrical engineering, or other related disciplines. With its novel approach, it paves the way for exploring research trends and challenges in such fields as interpersonal communication, games, or military applications.
Download or read book Research Anthology on Rehabilitation Practices and Therapy written by Management Association, Information Resources and published by IGI Global. This book was released on 2020-08-21 with total page 1973 pages. Available in PDF, EPUB and Kindle. Book excerpt: The availability of practical applications, techniques, and case studies by international therapists is limited despite expansions to the fields of clinical psychology, rehabilitation, and counseling. As dialogues surrounding mental health grow, it is important to maintain therapeutic modalities that ensure the highest level of patient-centered rehabilitation and care are met across global networks. Research Anthology on Rehabilitation Practices and Therapy is a vital reference source that examines the latest scholarly material on trends and techniques in counseling and therapy and provides innovative insights into contemporary and future issues within the field. Highlighting a range of topics such as psychotherapy, anger management, and psychodynamics, this multi-volume book is ideally designed for mental health professionals, counselors, therapists, clinical psychologists, sociologists, social workers, researchers, students, and social science academicians seeking coverage on significant advances in rehabilitation and therapy.
Download or read book Human Computer Interaction INTERACT 2015 written by Julio Abascal and published by Springer. This book was released on 2015-08-31 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt: The four-volume set LNCS 9296-9299 constitutes the refereed proceedings of the 15th IFIP TC13 International Conference on Human-Computer Interaction, INTERACT 2015, held in Bamberg, Germany, in September 2015. The 74 full and short papers and 4 organizational overviews, 2 panels, 6 tutorials, and 11 workshops included in the fourth volume are organized in topical sections on tangible and tactile interaction; tools for design; touch and haptic; user and task modelling; visualization; visualization 3D; visualization in virtual spaces; wearable computing; demonstrations; and interactive posters.
Download or read book Theory and Practice of Robots and Manipulators written by A. Morecki and published by Springer. This book was released on 2014-05-04 with total page 415 pages. Available in PDF, EPUB and Kindle. Book excerpt: The CISM-IFToMM Symposia have played a dynamic role in the development of the theory and practice of robotics. The proceedings of the Tenth Symposia present a world view to date of the state-of-the-art, including a unique record of the results achieved in central and eastern Europe.
