توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱Design and Simulation of Hybrid Electric Samand using Parallel Electric Assist Control Strategy
اطلاعات انتشار: هجدهمین کنفرانس سالانه مهندسی مکانیک، سال
تعداد صفحات: ۶
In this paper we have studies the conversion of Samand to a parallel hybrid electric vehicle. In the first step conventional Samand vehicle using real data for vehicle parameters and power train components, have been simulated. Simulation results are validated using experimental results of fuel consumption for three urban, extra urban and combined driving cycles. Partnership for the next generation of vehicles (PNGV) constraints is considered as the minimum performance requirements for a passenger car. In the second step using parallel electric assist control strategy (PEACS) for the hybrid electric vehicle and considering performance requirements, the internal combustion engine is downsized and the electric machine and battery pack are selected and sized for a pretransmission parallel hybrid electric configuration. PEACS parameters are defined and studied for the performance and fuel economy modes. Induction motor and permanent magnet traction motors beside two types of battery pack including valve regulated lead acid (VRLA) and Nickel metal hydride (NiMH) batteries are studied as the candidate motor\battery combinations.Results show a reduction of 23% in fuel consumption (FC) for the hybrid vehicle in the fuel economy mode for the NEDC driving cycle with respect to the conventional version while satisfying minimum vehicle performance.<\div>

۲Predicting stick–slip motion for a legged, piezoelectric driven microrobot
نویسنده(ها): ،
اطلاعات انتشار: نوزدهمین همایش سالانه مهندسی مکانیک، سال
تعداد صفحات: ۴
The motion of a stick–slip microrobot propelled by its piezoelectric unimorph legs is mathematically modeled. Using a continuously distributed mass model for the robot's body, the motion equation of the mechanism is extracted based on the assumption of linear Euler– Bernoulli beam theory and linear piezoelectric behavior. Moreover, the required condition for generating net motion is derived in terms of physical characteristics of the microrobot. We have shown that the higher the friction coefficient, then a lower average speed is obtained. In addition, results reveal that a microrobot with heavier legs can move in a rougher environment. Furthermore, regardless of the mass proportion between robot's main body and its legs, a certain level of speed can, always, be achieved. The proposed results will be well suited to design, construct, and control the microrobots moving with piezoelectric benders, as their feet.<\div>
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