مهندسی مکانیک مدرس

مهندسی مکانیک مدرس

طراحی، ساخت و صحه‌گذاری یک محرک الکترومغناطیسی خطی در بازه نیرویی میلی نیوتنی

نوع مقاله : پژوهشی اصیل

نویسندگان
سینا اخباری
مرتضی فرهید
مسعود دهناد
رضا گلزاریان
پژوهشکده رانشگرهای فضایی، پژوهشگاه فضایی ایران، تبریز، ایران
10.52547/mme.22.9.615
چکیده
در سال­های اخیر محرک­های الکترومغناطیسی خطی کاربرد ویژه ­ای در ایجاد حرکت ربات­های کوچک و اعمال نیروهای میلی نیوتنی جهت کالیبراسیون استندهای سنجش تراست رانشگرها یافته است. در این مقاله به طراحی و ساخت یک محرک الکترومغناطیسی خطی با بازه نیرویی میلی نیوتنی پرداخته شده است. دراین راستا، ابتدا روابط تحلیلی برای بدست آوردن پارامترهای میدان مغناطیسی و نیروی لورنتس استخراج شده و سپس، بر اساس معیارهای طراحی حساسیت نیرویی بالا، اتلاف حرارتی پایین و حداقل ابعاد و وزن، مناسب­ترین طراحی محرک الکترومغناطیسی مدنظر تعیین شد. بر اساس مدل طراحی شده، حساسسیت نیرویی تقریباً 1 میلی نیوتن بر آمپر حاصل شده در حالی که اتلاف توان حداکثر 1 میلی وات بود. همچنین کورس حرکتی قابل دسترسی 10 میلی متر بود. در نهایت، یک نمونه واقعی از محرک الکترومغناطیسی خطی ساخته شده و آزمایش­های عملی به منظور صحه­ گذاری محرک الکترومغناطیسی طراحی شده انجام یافتند. بدین منظور از یک ترازوی دقیق با دقت 0.01 گرم و منبع تغذیه با رزولوشن 1 میلی آمپر بهره گرفته شد. نتایج نشان داد که حداکثر اختلاف بین نیروی محاسبه شده و اندازه­ گیری شده 2.5 درصد بود. در نتیجه، مطابقت خوبی بین داده­های تجربی و مقادیر تحلیلی متناظر وجود دارد.
کلیدواژه‌ها
محرک الکترومغناطیسی
مدل‌سازی تحلیلی
میدان مغناطیسی
ساخت
صحه گذاری
حساسیت میلی نیوتنی

موضوعات

عنوان مقاله English

Design, Manufacture and Validation of Linear Electromagnetic Actuator with Force Range of Milli Newton

نویسندگان English

Sina Akhbari
Morteza Farhid
Masoud Dehnad
Reza Golzarian
Space thruster research institute, Iranian space research center, ،Tabriz, Iran
چکیده English

In recent years, linear electromagnetic actuators have gained special attention in small robot actuation and calibration of milli newton thruster stands. In this paper, a linear electromagnetic actuator with a force range of milli newtons is designed and manufactured. In this regard, first the analytical relationships of the magnetic field and Lorentz force were derived and then, based on the desired design criteria meaning high force sensitivity, low heat loss and minimum geometric dimensions and weight, the appropriate design parameters of the electromagnetic actuator is obtained. According to the results, the obtained force constant is approximately 1 mN/A while the maximum power loss is 1 mW at available stroke of 10 mm. Finally, a prototype of the linear electromagnetic actuator is manufactured and experiments are performed to validate the electromagnetic actuator. For this purpose, a precision scale with an accuracy of 0.01 gr and a power supply with a resolution of 1 mA is utilized. The results showed that the maximum difference between the calculated and measured force was 2.5%. Therefore, there is a good correlation between the experimental data and the corresponding analytical values.

کلیدواژه‌ها English

Electromagnetic actuator
Analytical modeling
Magnetic Field
milli newton sensitivity
manufacturing
validation
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مهندسی مکانیک مدرس
دوره 22، شماره 9
شهریور 1401
صفحه 615-623