Yadda Ake Zaɓar PCB Mai Dacewa Don Quadcopter Na Musamman | Jagorar Ƙwararru
Teburin Abubuwan da ke Ciki
- Gabatarwa
- Babban Aiki: Me ESC PCB ke yi?
- Rage Gina ESC PCB: Muhimman Abubuwan da Suka Shafi Tasirinsu
- Haɗin gwiwa da Maƙerin PCBA Mai Kyau
- Jerin Abubuwan da Za Ku Yi Amfani da Su Don Tsarin Zaɓenku
- Tushen Jirgin Sama
A duniyar gina jirgin sama mai saukar ungulu na musamman, abin farin ciki yana cikin rage duk wani aiki da injin ku ke yi. Yayin da firam, injina, da propellers ke samun ɗaukaka sosai, matukan jirgi masu ƙwarewa sun san cewa gwarzon da ba a taɓa rera shi ba—kuma babban abin da ya jawo rashin nasara—shine na'urar sarrafa saurin lantarki (ESC) Printed Circuit Board (PCB).
Zaɓar ESC mai zaman kansa abu ɗaya ne, amma tsara ko zaɓar ESC PCBA na musamman (Printed Circuit Board Assembly) wasa ne daban. Shawara ce mai mahimmanci wacce ke nuna aminci, amsawa, da kuma ƙarfin kwata na kwata naka. Wannan jagorar za ta zurfafa cikin sarkakiyar fasaha ta ESC PCBs, tana ba ka damar yanke shawara mai kyau don gininka na gaba mai inganci.
Babban Aiki: Me ESC PCB ke yi?
Kafin a zurfafa cikin ka'idojin zaɓi, yana da matuƙar muhimmanci a fahimci rawar da ESC ke takawa. Yana aiki a matsayin tsaka-tsaki tsakanin mai kula da jirgin sama (kwakwalwa) da injinan da ba su da gogewa (tsokoki). Babban ayyukansa sune:
- Sauya Wutar Lantarki: Yana sauya manyan kwararar ruwa daga batirin zuwa matakai uku na injin (A, B, C) cikin sauri don samar da filin maganadisu mai juyawa.
- Sadarwa: Yana fassara sigina daga mai sarrafa jirgin sama (yawanci PWM, DShot, ko Proshot) don tantance saurin motar da ake buƙata.
- Tsarin sadarwa: ESCs masu ci gaba suna ba da bayanan ra'ayi (RPM, zane na yanzu, zafin jiki) zuwa ga mai sarrafa jirgin don daidaitawa da sa ido.
PCB shine ginshiƙin da ke ɗauke da dukkan abubuwan da ke ba da damar waɗannan ayyuka. Tsarinsa yana tasiri kai tsaye ga inganci, wargajewar zafi, da hayaniyar lantarki na tsarin gaba ɗaya.
Rage Gina ESC PCB: Muhimman Abubuwan da Suka Shafi Tasirinsu
Babban aikin ESC PCB ya fi kawai allo mai kayan aiki; tsari ne da aka ƙera da kyau.
A. MOSFETs (Masu Canja Wuta)
Menene su: Transistors na Field-Effect na Metal-Oxide-Semiconductor sune manyan masu aiki waɗanda ke ɗaukar nauyin wutar lantarki mai yawa.
Sharuɗɗan Zaɓe:
- RDS(KUNNA): Wannan shine juriya lokacin da FET ke kunne. Ƙasa ta fi kyau. Ƙarancin RDS (ON) yana nufin ƙarancin kuzari da ake ɓatawa a matsayin zafi, wanda ke haifar da ingantaccen aiki da ƙarin ƙarfi ga injinan ku.
- Ƙimar Wutar Lantarki: Dole ne ya wuce ƙarfin batirinka cikin kwanciyar hankali (misali, 30V-40V FETs don 6S LiPo ~ 25.2V). Ƙimar ƙarfin lantarki mafi girma tana ba da damar aminci idan aka kwatanta da ƙaruwar ƙarfin lantarki.
- Gudanar da Yanzu: Matsayin wutar lantarki mai ci gaba da bugawa dole ne ya cika buƙatun injinan ku a ƙarƙashin babban nauyi.
- Saurin Canjawa: Saurin sauyawa yana ba da damar samun ƙarin mitoci na PWM, wanda ke haifar da aiki mai santsi a cikin injin. Duk da haka, dole ne a sarrafa shi don hana tsangwama ta hanyar lantarki (EMI).
B. Na'urar sarrafa ƙananan na'urori (MCU - Kwakwalwa)
Menene shi: Mai sarrafawa wanda ke gudanar da firmware na ESC (misali, BLHeli_32, AM32, KISS).
Sharuɗɗan Zaɓe:
- Ƙarfin Sarrafawa: MCUs na zamani masu bit 32 (kamar ARM Cortex-M0) sun maye gurbin tsofaffin guntu-guntu masu bit 8. Suna ba da damar fasaloli masu tasowa: ƙimar sabuntawa mafi girma (DShot1200), algorithms masu inganci (tacewar RPM), da kuma telemetry, duk suna ba da gudummawa ga tashi mai santsi da kuma sarrafa daidai.
- Daidaitawar Firmware: Zaɓin MCU ɗinka zai tantance wace firmware za ka iya amfani da ita. Tabbatar cewa masana'anta za su iya samo MCUs waɗanda firmware ɗin da ka fi so ke tallafawa.
C. Tsarin Tsarin Wutar Lantarki da Tsarin Jirgin Sama
Nan ne ƙirar PCB ta zama siffar fasaha.
- Hanyoyin da ake bi a yanzu: Dole ne alamun da ke ɗauke da babban ƙarfin lantarki (daga shigar da batir zuwa FETs zuwa fitarwar injin) su kasance gajere, faɗi, kuma mai kauriYawancin ESC masu inganci suna amfani da su 2oz ko ma 3oz yadudduka na tagulla don rage juriya da inganta zubar zafi.
- Na'urorin Haɗa Capacitors: Ba za a iya yin sulhu a kan wurin da capacitors ke sanyawa da kuma darajarsu ba. babban capacitor a cikin shigarwar yana sassauta ƙarfin batirin, yayin da yake ƙarami capacitors na yumbu An sanya shi kusa da FETs sosai, yana rage hayaniyar mita mai yawa. Rashin zaɓin capacitor ko sanya shi cikin sauƙi shine babban dalilin desyncs da kuma ƙaruwar ƙarfin lantarki mai lalacewa.
- Gudanar da Zafin Jiki: PCB ɗin kanta heatsink ne. Famfon jan ƙarfe da aka fallasa a ƙarƙashin MOSFETs, an haɗa su zuwa ƙasa ta hanyar hanyoyin zafi, suna da mahimmanci don jan zafi daga abubuwan da aka haɗa zuwa cikin iska ko kuma dumama ta waje.
D. Ƙarin Sifofi
- Firikwensin Yanzu: Kwamfutar da aka keɓe don auna jan wutar lantarki a ainihin lokaci, mai mahimmanci don telemetry da sarrafa baturi.
- Rijistar Akwatin Baƙi: Wasu ESCs na iya adana bayanan tashi a ciki, kayan aiki mai mahimmanci don gyara kurakurai da daidaitawa.
- 4-cikin-1 idan aka kwatanta da ESC guda ɗaya: ESC mai 4-in-1 yana haɗa ESC guda huɗu a kan PCB guda ɗaya, yana adana sarari da nauyi. ESC guda ɗaya sun fi sassauƙa kuma suna da sauƙin maye gurbinsu bayan faɗuwa. Zaɓin yana shafar gabaɗayan rikitarwar tsarin PCB.
Haɗin gwiwa da Maƙerin PCBA Mai Kyau
Ga wani aiki na musamman, ba wai kawai kana siyan wani ɓangare ba ne, kana neman abokin hulɗar masana'antu ne. Ga abin da za ka nema:
- Kwarewa tare da Zane-zane Masu Yawan Sauri da Sauri: Ba duk masana'antun PCB ne suka fahimci ƙalubalen musamman na ƙirar ESC ba. Tambayi misalai na aikinsu a fannin na'urorin lantarki masu amfani da wutar lantarki.
- Zaɓin Kayan Aiki: Ya kamata su ba da shawarar kayan da suka dace kamar TG170-180 PCBs don ƙarin juriya ga zafi da kuma kauri yadudduka na jan ƙarfe.
- Ƙarfin Haɗawa: Dole ne su sami daidaiton sanya ƙananan sassa (kamar resistor/capacitors 0201) daidai kuma su kula da haɗa manyan sassan ma'aunin zafi (MOSFETs) ba tare da haifar da lalacewa ba.
- Gwaji da Kula da Inganci (QC): Yi tambaya game da ka'idojin QC ɗinsu. Gwajin Flying Probe ya fi ƙanƙanta. Ga gine-gine masu inganci, ana ba da shawarar yin gwaji mai aiki a ƙarƙashin kaya.
- Tallafi ga Zane don Kerawa (DFM): Mai ƙera kayan aiki mai kyau zai sake duba fayilolin Gerber ɗinku kuma ya ba da ra'ayoyi don inganta yawan aiki da aminci, yana gano matsaloli masu yuwuwa kafin a fara samarwa.
Jerin Abubuwan da Za Ku Yi Amfani da Su Don Tsarin Zaɓenku
| Bangare | Tambayoyi da za a yi | Abin da Za a Nema |
|---|---|---|
| Aiki | Menene ƙimar halin yanzu da aka yi niyya? (misali, fashewar 45A mai ci gaba, fashewar 55A)? | FETs tare da ƙarancin RDS (ON) da ƙimar halin yanzu. |
| Wane tsari da kuma saurin sabuntawa nake buƙata? (DShot600, DShot1200)? | MCU mai girman bit 32 wanda ya dace da firmware na BLHeli_32 ko AM32. | |
| Aminci | Ta yaya ake sarrafa zafi? | Ƙarfin jiragen sama masu ƙarfi, hanyoyin zafi, da shawarwari don dumamawa ta waje. |
| An kare ƙirar daga ƙarar wutar lantarki? | Girman da ya dace da kuma wurin da aka sanya na'urorin shigar da bayanai. | |
| Masana'antu | Shin mai ƙera zai iya cimma burina na ƙira? | Shaidar aiki iri ɗaya, tallafin DFM, da kuma ƙarfin Layer na jan ƙarfe mai kauri. |
| Ta yaya ake gwada samfurin ƙarshe? | Alƙawarin yin gwajin lantarki 100% da kuma gwajin aiki na zaɓi. |
Tushen Jirgin Sama
Zaɓar madaidaicin ESC PCB babban jari ne a cikin aiki da ingancin quadcopter ɗinku na musamman. Shawara ce da ke haɗa injiniyan lantarki, thermodynamics, da kera daidai. Ta hanyar wuce ƙayyadaddun bayanai kawai da fahimtar dalilin da ke bayan zaɓin kayan aiki da tsari, kuna ƙarfafa kanku don zaɓar ko tsara allo wanda ba kawai wani ɓangare bane, amma kuma zuciyar jirgin ku mai ƙarfi da aiki mai kyau.
Kada ka bar gininka ya zama abin mamaki. Yi haɗin gwiwa da kamfanin PCBA wanda ke magana da harshen aiki da daidaito.
