دانلود مقاله ترجمه شده وسایل نقلیه مسافری دارای سیستم تعلیق الکترومغناطیسی – مجله IEEE

• فهرست مطالب:

 چکیده
۱ مقدمه
۲ EMS غیرفعال
۳ EMS نیمه فعال
۴ EMS کاملا فعال
۵ EMS خواص احیاکنندگی
۶ نتیجه گیری

• بخشی از ترجمه:

توسعه انواع سیستم تعلیق الکترو مغناطیسی و خواص بازسازی در آندر این مقاله بررسی شده برای سیستم الکترو مفناطیسی منفعل،نیاز به سیستم کنترل برای تنظیم ضریب میرایی برای حفظ راحتی سواری وثبات وجود ندارد.به طور کلی نیروی میرایی به طور مستقیم با سرعت نسبی بین جرم مطلق خطی یا همان بدنه خودرو و جرم مطلق شامل تایر خودرو است بنابراین، مصرف قدرت برای سیستم تعلیق غیر فعال الکترومغناطیسی  میزان بسیار کمی در مقایسه با سیستم نیمه فعال و به طور کامل فعال دارد.متاسفانه از نظر نیروی تراکم،تعلیق منفعل الکترومغناطیسی، پایین تر از همه بوده و در نتیجه EMS منفعل به تنهایی به اندازه کافی فراهم کننده راحتی مسافر نخواهد بود. سیستم تعلیق نیمه فعال شامل هردو عنصر کاملا فعال و غیر فعال بوده و آن قابل اعتماد تر است. اما EMS فعال به دلیل دمپر  MR کمی بد می باشد. خواص EMSمنفعل به تازگی در  EMS نیمه فعال استفاده می شود.اما تاکنون هیچ تحقیقی پيشنهادي در این زمینه برای وسایل نقلیه سبک وزن ارائه نکرده است.سیستم تعلیق فعال با استفاده از سیستم کنترل خارجی برای کنترل نیروی میرایی بوده و در نتیجه بهبود راحتی سواری و ثبات را دارد. متاسفانه سیستم تعلیق فعال مقدار زیادی از قدرت را مصرف میکند و ساختار پیچیده ای برای طراحی دارد.بااین حال این مقاله ارائه قابلیت اطمینان در سیستم تعلیق فعال را در خودرو های سبک وزن را اعمال میکند.حالت پیشرفته برای EMS غیر فعال و نیمه فعال ممکن است در آینده به منظور انجام عملکرد جئبش مورد استفاده قرار گیرد.

• بخشی از مقاله انگلیسی:

INTRODUCTION At present, most of the cars are using a passive hydraulic suspension. One of the main features of hydraulic suspension is it uses hydraulic oil as a damper. Whenever a vehicle traverses road irregularities, the excitation force from road surface is absorbed by the damper. The absorbed energy is converted into heat inside the damper. The vehicle body weight is supported by the mechanical spring attached with the damper. However, there are some disadvantages of hydraulic system. According to Gysen[1], hydraulic damper contributes to environmental pollution due to hose leaks and ruptures, where hydraulic fluids are toxic. Then, the hydraulic systems are considered inefficient due to the required continuously pressurized system. On the contrary, electromagnetic suspension systems (EMS) not require hydraulic fluid. It consists of sets of permanent magnet and series of current coil. Each of them can either act as translator or static armature. The interaction between permanent magnet flux and voltagesupplied armature winding will cause movement or thrust on the translator. Tubular linear motor is suitable in designing electromagnetic suspension system due to it have a relatively high force density that can control the vehicle body vibration same as hydraulic damper [2]. Several researches have been conducted to study the performance of tubular linear motor. Wang et al.[3] has provided a detailed analysis on tubular linear permanent magnet machines. In their paper, theanalytical method is used to establish the magnetic field distribution inside the machine, and the results are verified by using finite element analysis. They also state that predicting the magnetic field distribution by using analytical method is more efficient compared to by using equivalent circuit method. This is due to the problems associated with model inaccuracy, particularly when flux leakage is significant and the flux paths are complex. Analytical solution is done by using cylindrical coordinate system. The analytical method is done on various topologies of linear machine i.eHalbach, axial and radial magnetization pattern, air-cored and iron-cored armature. Parameters like thrust force and magnetic field density are calculated by using analytical solution and then compared with finite element analysis, whereas coil inductance and armature reaction field are calculated by using analytical solution only. The difference between analytical solution and finite element solution are small as expected. Bianchi et al.[4]have studied the comparison between all the configurations of tubular linear motor. Various configurations of linear motor such as buried and surface permanent magnet inside the rotor, air-cored and iron-cored armature, and moving armature or rotor.Analytical solutions is used by them to compare the performance of all the configurations. Linear motor parameters such as magnetic flux density, electrical and thermal conditions, thrust force, and force density were generated for all the linear motor configurations. The result is then compared with finite element method and both of them were in agreement. However, the reliability of linear motor as suspension systems is limited by existence of cogging force inside the motor. Paulides et al.[5] stated that cogging force in linear motor will effect the performance of it by reducing its speed control accuracy and smoothness of linear movement. They also characterized the cogging force inside the motor by using finite element analysis and the managed to generate the relationships between cogging force and pole pitch. The controllable force in linear motor allows researchers [6-10] to apply it into vehicle suspension system in which it is called an EMS. Linear motor can work on generator mode by converting the motion energy from translator into electrical energy[1]. In electromagnetic suspension system, the regenerative property of linear generator can dampen the translator`s oscillation by absorbing the kinetic energy that results from road excitation , same as the hydraulic suspension except thatthis energy is then supplied into storage system to be used by other loads in the vehicle [11].