Yadda a iya da shiga hanyar gargaɗi da kuma ƙarin lokaci a cikin pulse width modulation (PWM)?

Munakaɗa a matsayin Fadada da Wata Kasa a Pulse Width Modulation (PWM)

Pulse Width Modulation (PWM) yana nuna harkokin kawo fadada na gaba ta wata kasa kan siffar tashin. PWM ana amfani a cikin abubuwa kamar kontrolar motor, shugaban fadada, da dimming LED. Yakin in ba da fahimta game da munakaɗa a matsayin fadada da wata kasa a PWM yana da muhimmanci don in amfani da su daidai da inganta su.

1. Siffar Tashin PWM

• Alama PWM: Alama PWM yana da alamar karamin kasa mai tsawon da ya fi yawa, amma da tsari mai yawan kasa na fadada (on) da kasa na biyu (off) a kan har tsaki. Tsarin yana amsa da sunan wata kasa.

• Wata Kasa: Wata kasa yana nuna mutane da alama yake da fadada (on) zuwa tsari na dukkan tsaki na PWM. Ana bayyana shi a matsayin faifai ko kafin bayan 0 da 1. Misali, wata kasa 50% yana nuna cewa alama yake da fadada zuwa farkon tsaki da kuma da biyu zuwa baya; wata kasa 100% yana nuna cewa alama yake da fadada kowane lokaci; kuma wata kasa 0% yana nuna cewa alama yake da biyu kowane lokaci.

• Tsari na PWM: Tsari na alama na PWM yana nuna tsari na dukkan tsaki. Tsari masu yawa suna haifar da tsakoki, kuma alama na PWM yana canzawa mafi yawa.

2. Munakaɗa a matsayin Fadada da Wata Kasa a PWM

• Fadada Na Gaba: A cikin PWM, fadada na gaba yana da damar wata kasa. Idan fadada na takam na alama na PWM yana   ${\mathrm{<br>\; }}_{}$Vmax, fadada na gaba   ${\mathrm{<span\; style="font-family:\; arial,\; helvetica,\; sans-serif;\; font-size:\; 16px;">Vavg\; zai\; iya\; tabbatar\; da\; wannan\; rumomin:</span>\; }}_{}$

Vavg=D×Vmax

A nan:

• Vavg yana nuna fadada na gaba.

• D yana nuna wata kasa (0 ≤ D ≤ 1).

• Vmax yana nuna fadada na takam na alama na PWM (yana da kyau fadada na takam).

• Tattalin Wata Kasa ga Fadada Na Gaba:

• Idan wata kasa yana 0%, alama na PWM yana da biyu kowane lokaci, kuma fadada na gaba yana 0.

• Idan wata kasa yana 100%, alama na PWM yana da fadada kowane lokaci, kuma fadada na gaba yana da Vmax.

• Idan wata kasa yana a kan 0% da 100%, fadada na gaba yana da damar Vmax. Misali, wata kasa 50% yana nuna cewa fadada na gaba yana da damar farkon Vmax.

3. Misalolin Amfani da PWM

a. Kontrolar Motor

• A cikin kontrolar motor, PWM ana amfani don inganta sauƙi ko jirgin motor. Ta hanyar canza wata kasa na alama na PWM, fadada na gaba da aka bayar a motor yana iya kontrola, saboda haka inganta aiki na motor. Misali, idan wata kasa yana haifar da, fadada na gaba yana haifar da, kuma motor yana haifar da; kuma idan wata kasa yana faru, fadada na gaba yana faru, kuma motor yana faru.

b. Dimming LED

• A cikin abubuwan dimming LED, PWM ana amfani don inganta rarrabe LED. Ta hanyar canza wata kasa na alama na PWM, fadada na gaba da aka bayar a LED yana iya kontrola, saboda haka inganta rarrabensa. Misali, wata kasa 50% yana nuna cewa rarrabe LED yana da damar farkon rarrabensa, kuma wata kasa 100% yana nuna cewa LED yana da rarrabe mai yawa.

c. DC-DC Converters

• A cikin DC-DC converters (kamar buck converters ko boost converters), PWM ana amfani don inganta fadada na gaba. Ta hanyar canza wata kasa na alama na PWM, lokacin da aka bayar da kuma lokacin da aka sauke wasu al'adun bayar yana iya kontrola, kuma saboda haka inganta fadada na gaba. Misali, a cikin buck converter, idan wata kasa yana faru, fadada na gaba yana faru, kuma idan wata kasa yana haifar da, fadada na gaba yana haifar da.

4. Yadda Da Neman PWM

• Gaskiya: PWM tana kontrola fadada ta hanyar harkokin bayar, ba ta hanyar kontrola linear (misali, ta hanyar fadada na gaba na tashin), saboda haka tana haifar da gaske da neman gaskiya.

• Ingantaccen Kontrola: Ta hanyar canza wata kasa na da ma'adan, PWM tana ba da kontrola mai ma'adan ga fadada na gaba ko fadada na gaba.

• Gaskiya: PWM yana iya haifar da abubuwa daban-daban, kamar kontrolar motor, dimming LED, da shugaban fadada.

5. Iyaɓiyoyi na PWM

• Interference Electromagnetic (EMI): Saboda alama na PWM yana da tsari masu yawa, suna iya haifar da interference electromagnetic, musamman a tsari masu yawa. Yanayin filter da shielding yana da muhimmanci a cikin inganta su.

• Noise: A wasu abubuwa, alama na PWM zai iya haifar da noise, musamman a cikin abubuwan audio ko kontrolar motor. Wannan matukar zai iya haifar ta hanyar zaɓe tsari na PWM.

Muhimmiyar Bayani

A Pulse Width Modulation (PWM), fadada na gaba yana da damar wata kasa. Wata kasa yana nuna tsari da alama yake da fadada a kan tsaki na PWM, wanda yake yana haifar da fadada na gaba. Ta hanyar canza wata kasa, fadada na gaba ko fadada na gaba zai iya kontrola mafi yawan gaskiya. Teknologi na PWM yana amfani a cikin kontrolar motor, dimming LED, shugaban fadada, da abubuwan daban-daban, tare da neman gaskiya da kontrola mai ma'adan.