پایش لرزشهای بسامد بزرگ در اتاقهای آزمون موتور به کمک لرزهگیرهای بادی نیمه فعال با پایشگر PID
محل انتشار: فصلنامه تحقیقات موتور، دوره: 20، شماره: 20
سال انتشار: 1389
نوع سند: مقاله ژورنالی
زبان: فارسی
مشاهده: 203
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شناسه ملی سند علمی:
JR_ENGIN-20-20_004
تاریخ نمایه سازی: 11 اردیبهشت 1401
چکیده مقاله:
Today there are different vibration isolators used in industries according to the weight and excitation frequency
of the machines which have vibration. One of them is Air Spring which is in two types: Convoluted
air spring and membrane air spring.
Convoluted air springs are used to control vibrations in low frequency (usually lower than ۱۰ Hz) and the
membrane ones are used in high frequency (upper than ۲۰ Hz). Middle frequency is between ۱۰ and ۲۰ Hz.
Other vibration isolators are being used for this frequency range.
In this paper an air spring system was made using LVDT, as the linear measurement sensor, accelerometer
with PID controller and convoluted air spring. As mentioned convoluted air springs are used in low frequency
but by using conclusions of this research we can use it in high frequency (about ۵۰ Hz). Finally, an
optimum vibration isolator has been made which reduces the vibration amplitude from ۲.۷mm to ۰.۱۵mm
(about %۸۷.۵ reduction in vibration amplitude). Finite element analysis results have been compared with
experimental results. There is a good adaption with approximately %۸ error. This research has been done
according to “Irankhodro Powertrain Company” request for controlling of engine test stand vibration.
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