De statische wissel: De wissel die nooit faalt

Dit rapport behandelt een wissel die geen bewegende delen bezit en hierdoor geen controle circuit nodig heeft. Het rapport bezit een analyse van verschillende bestaande wissels en wisselconcepten, beide in hoofdspoor en tramspoor, om een evaluatie te geven van elk concept. Op deze manier is bepaald of een zodanig "statische wissel" wenselijk is...

The Design and Proof-of-Concept of the BERT Prosthesis

OBJECTIVE: This paper describes the design of the BERT Prosthesis and evaluates the proof-of-concept testing for its primary functions. DESIGN: The BERT Prosthesis is an energetically passive, lightweight, transfemoral prosthesis, and four hypotheses about its functional abilities were proposed. TESTING: A simulation of the leg dynamics was...

Location optimized hybrid damping for one-dimensional flexible structures

Damping vibrations of flexible structures is a subject of importance in several industries, as the aerospace and high-tech industry. Especially when the ratio of damping over weight needs to be high. In literature optimization of this ratio is achieved in several manners, through optimization of individual damping methods, ie. active and passive...

Flexible Graphene-Based Passive and Active Spinal Cord Implants

The spinal cord, considered to be the most important path of the human body, when injured induces severe motor dysfunction. Therefore, patients affected by lesions on the spinal cord, are most of the time unable to walk, stand or perform motor activities that are trivial for healthy people. To provide a better quality of life for these patients,...

Design of a passive overground body weight support system with forward force: Theory, conception & realization

Gait rehabilitation attempts to alleviate gait and balance impairments caused by spinal cord injury. Conventional gait rehabilitation often includes unloading a portion of the user’s weight with a vertical force. This vertical force enables people to practice stepping but makes forward propulsion more difficult. Users will adopt a compensatory...

Full-Duplex CMOS Duplexer: Passive self-interference cancellation

To accommodate the growing demand for wireless communications, new techniques are required to increase throughput of wireless networks. One technology aiming to increase the spectral efficiency of wireless devices is full duplex (FD) radios. These systems are capable of single carrier transmission and reception and could ideally double the...