A Study of Active Shifting of Human Driver for Improving Wheelchair Tipping Stability
نویسندگان
چکیده
This paper presents a model describing the effects of a human driver on the tipping stability of a powered wheelchair. The tipping stability is measured by the angle of tilt required to induce a loss of contact between any of the wheels of the wheelchair and the ground. Specifically, the effect of moving the centre of gravity of the human driver relative to that of the wheelchair in a controlled manner is shown to improve the tipping stability. Expressions are derived relating the static and dynamic tipping criteria to the position and relative mass of the human. A simple controller is used to demonstrate that this strategy serves to improve tipping stability.
منابع مشابه
Control of Electric Wheelchair Suspension System based on Biodynamic Response of Seated Human Body
Electric wheelchair is one of the equipment to be used by the incapacitated and disable people. Constant exposure to vibration affects human comfort and health. Reducing the vibrations transmitted to the human body is important in the electric wheelchair design and becomes a healthcare industry demand. This paper deals with the study on vibration control of the electric wheelchair suspension sy...
متن کاملDesign and Modification of One Arm Driven Manual Hemiplegic Wheelchair
This paper presents design modification to the existing standard wheelchair by incorporating an improved propulsion system and also braking and tilting systems that allow its full control with only one hand. The proposed design has the propulsion system with a chain drive powered through a four-bar linkage driven by the main handle. The desired direction of motion is obtained by moving the leve...
متن کاملComprehensive Needs Assessment Study and Deployment of QFD Targeted at New Wheelchair Design
Objectives: Extensive use of wheelchair increases caregiver dependency, risk of bedsores, risk of injury during transfer, and so on, and it effectively decreases quality of life, safety, and comfort of the people with disability. Therefore, improving the design of wheelchairs is highly essential in promoting the quality of life and level of participation among people with disability. The design...
متن کاملThe Effect of a Scapular Stability Based Corrective Exercise Program on upper cross syndrome in Wheelchair Basketball Athletes
This article has no abstract.
متن کاملWheelchair prescription: an analysis of factors that affect mobility and performance.
Clearly, all considerations for wheelchair performance and their applicability to optimization of mobility are related to user position relative to the main wheel axis. It is also obvious that wheelchair performance is enhanced by a center of gravity position rearward of that which is characteristic of the generic wheelchair. The only obvious features of the generic wheelchair are excessive sta...
متن کامل