کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5002550 | 1368454 | 2016 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A novel accelerometer based feedback concept for improving machine dynamic performance
ترجمه فارسی عنوان
یک مفهوم بازخورد مبتنی بر شتاب سنج جدید برای بهبود عملکرد پویایی ماشین
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مکانیک محاسباتی
چکیده انگلیسی
Small size ultra-precision Computer Numerical Control (CNC) machines require high dynamic performance. Flexible frame phenomena can limit the machine dynamic performance, particularly in small size machines. A novel accelerometer based feedback concept for improving machine dynamic performance was developed and realised, a virtual metrology frame. It expends the limited techniques for improving dynamic performance of a small size machine by measuring the flexible frame displacement, and feeding it into the controller. The concept was implemented in a simplified linear motion system, and showed a 12dB reduction in the magnitude of the first resonance in the plant frequency response function. This allowed improving the servo bandwidth by 58% based on a PID controller. A new technique for real-time dynamic displacement measurements using accelerometer was developed. It shows a low sensor noise Ï<30 nm; thus, accelerometers are used as a displacement sensor in a control system.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: IFAC-PapersOnLine - Volume 49, Issue 21, 2016, Pages 553-558
Journal: IFAC-PapersOnLine - Volume 49, Issue 21, 2016, Pages 553-558
نویسندگان
Jonathan Abir, Paul Morantz, Stefano Longo, Paul Shore,