As the core of electric vehicle, driving motor should have advantages high-power density, wide speed range and small volume. Aiming at demand vehicle drive structural characteristics permanent magnet synchronous motor, by using Motor Cad, a internal rotor (PMSM) was designed analysed in detail this paper. In order to improve anti-demagnetization ability power density structure as built-in compo...

This paper proposes a methodology for presizing the power of an electric vehicle traction motor. Based on the vehicle desired performances, the electric motor optimal power can be calculated. The final objective is to meet the design constraints with minimum power under the European urban (ECE-15) and sub-urban (EUDC) driving cycles. The power presizing methodology is validated through extensiv...

OBJECTIVE Rollover crashes account for more than 33% of all motor vehicle-related fatalities and have the highest fatality risk of all crash types, at 1.37% in the United States. There is increased awareness of the high fatality rate associated with this crash type, but there is very limited pediatric-specific data related to rollover crashes in the United States. Recent focus on rollover mitig...

STUDY OBJECTIVE We evaluated the efficacy of safety devices (seat belts and air bags) on hospital resource use and injury severity while controlling for variables known to affect outcome of motor vehicle crashes. METHODS We conducted a prospective observational study of motor vehicle crash victims who were transported to the hospital in a suburban-rural county with a population of 1.4 million...

The frequency of motor vehicle and working accidents was analyzed by means of a strictly anonymous questionnaire in 156 patients with sleep apnea syndrome (SAS) and in 160 age-gender matched controls. In the SAS group 12.4% of all drivers had motor vehicle accidents as compared to 2.9% in the control group (p<0.005). The motor vehicle accident rate was 13.0 per million km in patients with more ...

OBJECTIVE To determine whether pedestrian countdown signals (PCS) reduce pedestrian-motor vehicle collisions in the city of Toronto, Canada. METHODS A quasi-experimental study design was used to evaluate the effect of PCS on the number of pedestrian-motor vehicle collisions in the city of Toronto, from January 2000 to December 2009. Each intersection acted as its own control. We compared the ...

Motor vehicle collisions and crashes are a leading cause of death among Nevada residents aged 5-34 years, representing 14% of all injury deaths in that age group in 2010. During 2008-2011, a total of 173 pedestrian deaths from motor vehicle collisions occurred in Nevada, accounting for 16% of motor vehicle deaths in the state. Approximately 75% (2 million persons) of Nevada residents live in Cl...

INTRODUCTION Pregnancy causes diverse physiologic and lifestyle changes that may contribute to increased driving and driving error. We compared the risk of a serious motor vehicle crash during the second trimester to the baseline risk before pregnancy. METHODS We conducted a population-based self-matched longitudinal cohort analysis of women who gave birth in Ontario between April 1, 2006, an...

Safety of motor vehicle seats is of great importance in providing crash protection to the occupant. An increasing number of wheelchair users use their wheelchairs as motor vehicle seats when traveling. A voluntary standard requires that compliant wheelchairs be dynamically sled impact tested. However, testing to evaluate the crashworthiness of add-on wheelchair seating systems (WCSS) independen...

BACKGROUND To investigate the epidemiology of a steep decrease in the incidence of suicide deaths in Australia. METHODS National data on suicide deaths and deliberate self-harm for the period 1994-2007 were obtained from the Australian Institute of Health and Welfare. We calculated attempt and death rates for five major methods and the lethality of these methods. Negative binomial regression ...