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تخصصی برق - موتور های خطی
تخصصی برق
جمعه 1 آذر 1387

موتور های خطی

جمعه 1 آذر 1387

نوع مطلب :برق، 
نویسنده :سجاد غلامی

 موتور خطی اساساً یک موتور الکتریکی است که از حالت دوار در آمده تا بجای اینکه یک گشتاور (چرخش) گردشی تولید کند، یک نیروی خطی توسط ایجاد یک میدان الکترومغناطیسی سیار در طولش، بوجود آورد. موتورهای خطی اغلب موتورهای القایی یا پله‌ای هستند. می‌توانید یک موتور خطی را در یک قطار سریع السیر مگلو مشاهده کنید که در آن قطار روی زمین پرواز می‌کند. نوع دیگری از موتورهای الکتریکی موتور پله‌ای است، که در آن یک روتور درونی ، شامل آهنرباهای دائمی توسط یک دسته از آهنرباهای خارجی که به صورت الکترونیکی روشن و خاموش می‌شوند، کنترل می‌شود. یک موتور پله‌ای ترکیبی از یک موتور الکتریکی DC و یک سلونوئید است. موتورهای پله‌ای ساده توسط بخشی از یک سیستم دنده‌ای در حالتهای موقعیتی معینی قرار می‌گیرند، اما موتورهای پله‌ای نسبتاً کنترل شده ، می‌توانند بسیار آرام بچرخند. موتورهای پله‌ای کنترل شده با کامپیوتر یکی از فرمهای سیستم‌های تنظیم موقعیت است، بویژه وقتی که بخشی از یک سیستم دیجیتال دارای کنترل فرمان یار باشند.




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