Nonlinear interface optical switch structure for dual mode switching revisited

1998 ◽  
Author(s):  
Rebecca J. Bussjager ◽  
Joseph M. Osman ◽  
Joseph Chaiken
Keyword(s):  
Optical Switch ◽  
Mode Switching ◽  
Dual Mode ◽  
Switch Structure ◽  
Nonlinear Interface

scholarly journals Design, modeling, and demonstration of a new dual-mode back-assist exosuit with extension mechanism

2021 ◽  
Vol 2 ◽  
Author(s):  
Erik P. Lamers ◽  
Karl E. Zelik
Keyword(s):  
Biomechanical Model ◽  
Mode Switching ◽  
Design Parameters ◽  
Dual Mode ◽  
Extension Mechanism ◽  
Body Forces ◽  
Low Profile ◽  
Military Healthcare ◽  
The Moment ◽  
Practical Factors

Abstract Occupational exoskeletons and exosuits have been shown to reduce muscle demands and fatigue for physical tasks relevant to a variety of industries (e.g., logistics, construction, manufacturing, military, healthcare). However, adoption of these devices into the workforce has been slowed by practical factors related to comfort, form-factor, weight, and not interfering with movement or posture. We previously introduced a low-profile, dual-mode exosuit comprised of textile and elastic materials to address these adoption barriers. Here we build upon this prior work by introducing an extension mechanism that increases the moment arm of the exosuit while in engaged mode, then collapses in disengaged mode to retain key benefits related to being lightweight, low-profile, and unobstructive. Here we demonstrate both analytically and empirically how this extensible exosuit concept can (a) reduce device-to-body forces (which can improve comfort for some users and situations), or (b) increase the magnitude of torque assistance about the low back (which may be valuable for heavy-lifting jobs) without increasing shoulder or leg forces relative to the prior form-fitting exosuit. We also introduce a novel mode-switching mechanism, as well as a human-exosuit biomechanical model to elucidate how individual design parameters affect exosuit assistance torque and device-to-body forces. The proof-of-concept prototype, case study, and modeling work provide a foundation for understanding and implementing extensible exosuits for a broad range of applications. We envision promising opportunities to apply this new dual-mode extensible exosuit concept to assist heavy-lifting, to further enhance user comfort, and to address the unique needs of last-mile and other delivery workers.

Mixed-Time Scale Based Adaptive Mode Switching for Dual Mode SWIPT

2019 ◽  
Author(s):  
Jong Jin Park ◽  
Jong Ho Moon ◽  
Kang- Yoon Lee ◽  
Dong In Kim
Keyword(s):  
Time Scale ◽  
Mode Switching ◽  
Dual Mode

A Practical and Feasible Control System for Bifunctional Myoelectric Hand Prostheses

2010 ◽  
Vol 34 (2) ◽  
pp. 195-205 ◽  
Author(s):  
Naser Hamdi ◽  
Yazan Dweiri ◽  
Yousef Al-Abdallat ◽  
Tarek Haneya
Keyword(s):  
Developing Countries ◽  
Control System ◽  
Degrees Of Freedom ◽  
Low Cost ◽  
Muscular Activity ◽  
Mode Switching ◽  
Prosthetic Device ◽  
Dual Mode ◽  
Myoelectric Prostheses ◽  
Excellent Control

This paper presents an implementation of a practical and low-cost hardware-based control system for multifunctional myoelectric hand prostheses. The model utilizes a mode-switching technique in order to voluntarily control the operation of a dual-mode prosthetic device in two degrees of freedom: grasp/release and pronation/supination. This system was designed specifically to cater to the increasing needs of patients in developing countries, where myoelectric prostheses are scarce and extremely expensive. The design relied entirely on locally-available commercial components and aimed at allowing small prosthetics producers the freedom to utilize and modify the design according to their clients' preferences and requirements. Evaluation tests revealed excellent control and ability to execute basic hand and wrist functions even with short training periods, although results varied with the underlying level of muscular activity.

3.4: Dual‐Mode Switching Electrophoretic Displays with Thermally Reversible Gelators

2021 ◽  
Vol 52 (S2) ◽  
pp. 71-74
Author(s):  
Ming-Yang Yang ◽  
Wen-Jie Hu ◽  
Zong Qin ◽  
Bo-Ru Yang
Keyword(s):  
Mode Switching ◽  
Dual Mode
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