The pattern of propulsion was investigated for five male paraplegics in six seating positions. The positions consisted of a combination of three horizontal rear-wheel positions at two seating heights on a single-purpose-built racing wheelchair. To simulate wheelchair propulsion in the laboratory, the wheelchair was mounted on high rotational inertia rollers. For three trials at each seating pos...

Objectives: One of the applications of ergonomics disciplinary is designing driver workstation compatible to users’ characteristics. The aim of this study was evaluation of interior design of Shoka vehicle with respect to the accommodation for Iranian population and proposing suggestions for customizing design of the vehicle. Methods: This study was a descriptive-analytical study conducted a...

The aim of this thesis was to develop and test a platform which was capable of measuring the developmental trajectory of postural stability and fine motor control. Moreover, the thesis set out to explore the interdependence of these motor processes through synchronous measurement of postural and fine-motor control processes. The thesis introduces an objective, fine-motor measure sensitive enoug...

This paper describes the integration of computer-aided design (CAD) with the design and fabrication of wheelchair seats. The use of CAD during the design phase permits personal seating for adult and pediatric clientele through a series of standard manufactured seating components. The advent of CAD has permitted the creation of databases of detailed 3-D wheelchair structures that are commerciall...

The neck and back pains are the most spread health problems of century caused by remaining slouching for long hours on smart phones, tablets computers. Many medical researches prove that monitoring improving seating posture can prevent spinal pains. In this paper we propose a Real-time system. system is composed belt equipped with inertial sensors. sensors collect information send them to cloud...

This technical report presents the recent progress in the design and construction of a closed loop automated seating system. Preliminary test results are reported. The system is designed to measure seating surface forces and control the seating surface geometry of a seated human. It uses force information as feedback to determine custom seating contours which produce desired seating characteris...

For people with spinal cord injuries, the selection of a wheelchair and seating system involves many factors. This clinical perspective describes a model that includes consideration of the person, the wheelchair, the immediate environment between the person and the wheelchair, the intermediate environment of the home and work, and the community environment. The seated posture is examined biomec...

This paper addresses modeling analysis and the soft seating control of an electromagnetic actuator used in electromechanical camless valvetrains. Our mathematical modeling analysis reveals the instability of the actuator dynamics linearized around the seating position and zero velocity. This implies that open loop pulse shaping alone cannot render repeatable valve closing and seating motion. Cl...

The prescription of appropriate seating for children and young adults with a motor handicap is a complex issue requiring a clear identification of the child's physical ability in all postures. Recent work by Pountney et al. (1990) has shown how the development of lying ability is linked to sitting ability. This emphasises the importance of the total approach to assessment and prescription of se...