Abstract: This paper presents an in-wheel vibration absorber for in-wheel-motor electric vehicles (IWM EVs), and a corresponding control strategy to improve vehicle ride comfort. The proposed in-wheel vibration absorber, designed for suppressing the motor vibrations, is composed of a spring, an annular rubber bushing, and a controllable damper. The parameters of the in-wheel spring and rubber b...

Vibration has become an important consideration in engineering. Development of industries and vehicles make the subject even more important. In today’s world every family has a car. There for it becomes essential to study the phenomenon of vehicle vibration and it's effects on humans. Man, as a mechanical system, is extremely complex and his mechanical properties readily undergo change. Effect ...

This paper presents an integration design scheme and an optimization control strategy for electric wheels to suppress the in-wheel vibration and improve vehicle ride comfort. The in-wheel motor is considered as a dynamic vibration absorber (DVA), which is isolated from the unsprung mass by using a spring and a damper. The proposed DVA system is applicable for both the inner-rotor motor and oute...

background: drivers of heavy motor vehicles are occupationally exposed to intense whole body vibration (wbv) for several hours per day over their working lifetime. therefore, they are at risk of wbv-induced occupational disorders. this study aimed to investigate health effects of long-term exposure to whole body vibration among a group of heavy vehicle drivers in fars province, southwestern ira...

Ride comfort is one of the most important dynamic performance characteristics of railway vehicles and it is affected by various factors such as vibration, noise, smell, temperature, visual stimuli, humidity and seat design. Evaluating ride comfort is not simple because all these factors must be considered simultaneously. In general, vibration, which originates from vehicle motion, is taken as t...

the suspension system of a vehicle is one of the most important parts which is involved in the process of vehicle designing. when a vehicle suspension system is designed, the evaluation of its performance against the road disturbances such as shocks and bumps are very important. the most commonly used systems consist of four hydraulic jacks with mobility in vertical line with low speed and low ...

In this study, the effect of posture, vibration magnitude and frequency on seat-to-head (STH) and back support-tohead (BTH) transfer functions has been studied under vertical sinusoidal vibration. Twelve healthy male subjects were participated in experimental work to measure vertical vibration transmitted to the occupants head in three representative postures (erect, vertical back on and forwar...

In vehicle systems occupational drivers might expose themselves to vibration for a long time. This may cause illness of the spine such as chronic lumbago or low back pain. Therefore, it is necessary to evaluate the influence of vibration to the spinal column and to make up appropriate guidelines or counter plans. In ISO2631-1 or ISO2631-5 assessment of vibration effects to human in the view of ...

Executive Summary of Findings This document contains review of literature on the effects of vibration on human performance. It is intended to address the issues relevant to reported difficulties in the use of the XM4 Command and Control Vehicle while the vehicle is in motion. The focus of this review is on the effects of vibration on visual task, with additional consideration given to manual ta...