Kuchlanish tebranishini baholash oid misollar yechish

AMALIY MASHG‘ULOT №7
KUCHLANISH TEBRANISHINI BAHOLASH OID MISOLLAR YECHISH

7.1-rasmdagi pechning ulanish sxemasida YK shinasida kuchlanishning keng tebranishi

7.1-rasm. Yoyli po‘lat pechining ulanish sxemasi

б 

O‘rnatilgan talablarga asosan yoritish qurilmalari uchun ruxsatlangan kuchlanishning tebranish kengligini to‘g‘ri kelishini tekshirish uchun quyidagi tengsizlik bajarilishi kerak:

T – kuzatilayotgan umumiy tebranish vaqti;  tebranish amplitudalari orasidagi eng kichik ruxsatlangan vaqt oralig‘i.
1 misol.7.2- rasmda ko‘rsatilgan tarmoqdagi kuchlanish tebranishini baholang.

7.2-rasm. Kuchlanishning tebranishi
Payvandlashnining ishlash vaqti  . Bunda kuchlanish m=120 marta tebranadi. Hisobiy kuchlanishning tebranish kengligi:

б .

Kuchlanishning tebranish chastotasi teng: F= .

Chastotaga bog‘liq kuchlanishning qayta o‘zgarishini, ruxsatlangan kuchlanishning tebranish egri chiziqlaridan ruxsatlangan kuchlanish tebranish kengligini aniqlaymiz. б
б  ruxsat etilmagan tebranish.


Mustaqil yechish uchun misollar

1-misol. Tez o‘zgaruvchan yuklama ulangan (2.4-rasm) podstansiyaning 6 kV li shinasida (2.3-rasm) kuchlanish tebranishining ruxsat etilishini baholang. 10 daqiqa ichida kuchlanishning tebranishlar soni n=50.

1-rasm. Ulanish sxemasi 7.3-rasm. Yuklamalarning o‘zgarish grafigi

2-misol. 35 va 220 kV shinalarda kuchlanish tebranishi mumkinligini aniqlang (2.5-rasm).
A. Hamma pechlar.
B. Bitta DSP-200.
C. Bitta DSP-100.
Erish oralig‘i 10 daqiqa. Kuchlanish tebranishi soniya ichida 0,4 marta.