Yantai Bonway Manufacturer

  Iko kushandiswa kweiyo dc motor kumhanya yekudzora system

 

Iyo DC gavhuna ndiyo mudziyo wekugadzirisa kumhanya kweiyo DC mota. Kumucheto kwekumusoro kwakabatana neiyo AC magetsi, iyo yepasi yekupedzisira yakabatana neiyo DC mota, uye DC gavhuna anoshandura iyo AC simba kuita maviri anobuda DC magetsi emagetsi, imwe yekuisa kuDC mota neodymium (stator), nzira yese. Input kune DC mota armature (rotor), gavhuna weDC anogadzirisa iyo DC mota kumhanya nekudzora iyo armature DC voltage.   Iko kushandiswa kwe dc mota yekumhanyisa control system. Panguva imwecheteyo, iyo DC mota inopa mhinduro ikozvino kune gavhuna. Gavhuna anosarudza kumhanya kweDC mota zvinoenderana nemhinduro iripo. Kana zvichidikanwa, iyo armature voltage inobuda inogadziriswa kugadzirisa mota kumhanya zvakare.

Iyo yekumhanyisa control scheme yeDC mota kazhinji ine nzira nhatu dzinotevera:

1. Shandura iyo armature voltage;
2. Chinja excitation winding voltage;
3. Shandura iyo armature loop resistance.

  Iko kushandiswa kwe dc mota yekumhanyisa control system. Uchishandisa single-chip microcomputer kudzora kuchinjika kweDC mota, kazhinji uchitora nzira yekugadzirisa iyo armature voltage, iyo PWM1 nePWM2 inodzorwa neiyo single-chip microcomputer kugadzira inoshanduka pulse, kuitira kuti voltage pamota. iriwo pulse voltage ine upamhi hwakasiyana. Maererano formula

U=aVCC

  Iko kushandiswa kwe dc mota yekumhanyisa control system. Ikoko: U ndiyo magetsi emagetsi; a is the duty cycle of the pulse (0 <a <1); VCC DC voltage sosi, pano 5V.

Iyo armature voltage yemota inodzorwa neinobuda pulse yeiyo single-chip microcomputer, uye kuchinja kweiyo DC mota kunoitwa ne pulse wide modulation tekinoroji (PWM).

Nekuti muH-bhiriji redunhu, mota inogona kutyaira chete kana PWM1 nePWM2 mazinga akatarisana, ndiko kuti, kana PWM1 nePWM2 zvese zvakakwirira kana zvakaderera, hazvigone kushanda, saka iyo chaiyo pulse upamhi mune iri pamusoro. mufananidzo. Kuna B,

  Iko kushandiswa kwe dc mota yekumhanyisa control system. Isu tinoisa nguva yePWM wave kusvika ku1ms, uye kutenderera kwebasa kunogadziriswa nematanho zana (musiyano uripo pakati penhanho imwe neimwe ndeye 100%), kuitira kuti timer T10 igadzire timer kukanganisa yega yega 0ms, uye inopinda mukati meiyo inotevera PWM wave kamwe ka0.01. Mumufananidzo uri pamusoro apa, basa rekutenderera ndiro 100%, kureva kuti, kubuda kwemhepo ndeye 60ms, uye kuputika kwemhepo ndeye 0.6ms, saka simba rekudzivirira ndiro 0.4 * 5% = 60V.

Tiri kutaura pamusoro pekutenderera mberi nekudzoka shure.   Iko kushandiswa kwe dc mota yekumhanyisa control system. Kana tikangotendeuka munzira imwe chete, tinongoda kuisa PWM1 kusvika pakakwirira kana kuti yakaderera, uye kungoshandura kushanduka kwepulse kweimwe PWM2 level, sezvinoratidzwa pasi apa. Q4 iripo, Q3 yakavharwa, mota inogona kungogadzirisa kutenderera kumhanyisa wachi)

Mushure mekuramba tichiongorora uye tichitaura nezve dhizaini yatenzi, iyo inotsika mota yekudzora imwe-chip microcomputer inozopedzwa, uye iyo chaiyo-nguva yekumberi nekudzoreredza kutenderera, kukurumidza uye kudzika kweiyo inotsika mota inogona kuitika.

     Iko kushandiswa kweiyo dc motor kumhanya yekudzora system   Kana iri yemusimboti wekushanda weiyo stepper mota, ndinotenda kuti vanhu vazhinji vanotoziva kuti nguva ino iine-phase steping motor, inoshandisa ina-phase sere-shot yekushanda mode, inoti: A-AB-B-BC-C- CD-D -DA-A

DC mota yekumhanyisa kudzora inogona kukamurwa kuita yekukurudzira kudzora nzira uye armature voltage yekudzora nzira. Kuwedzeredza kutonga kunoshandiswa zvishoma, uye armature voltage control inoshandiswa mumazhinji maapplication.   Iko kushandiswa kwe dc mota yekumhanyisa control system. Nekufambira mberi kwesimba remagetsi tekinoroji, kushandura iyo armature voltage inogona kuwanikwa nenzira dzakasiyana siyana, pakati peiyo pulse wide modulation (PWM) inzira inowanzoshandiswa yekushandura mhepo yehondo. Iyo nzira ndeyekugadzirisa iyo armature voltage U yeDC mota nekushandura chiyero chenguva-yenguva yemota armature voltage kusvika kunguva yesimba (kureva, reshiyo yebasa), nekudaro ichidzora kumhanya kwemota.

 

  Iko kushandiswa kwe dc mota yekumhanyisa control system. Iyo triangular wave jenareta inoshandiswa kugadzira triangular wave UT yeimwe frequency, iyo inowedzerwa neadder kune yekupinza yekuraira chiratidzo UI kuburitsa chiratidzo UI UT, iyo inozotumirwa kune muenzanisi. Muenzanisi ndeye op amp inoshanda munzvimbo yakavhurika-loop ine yakanyanya kuvhurika-loop kuwana uye kudzikisira maitiro ekuchinja. Kuchinja kudiki mumusiyano wechiratidzo pakati pezvipimo zviviri zvinoita kuti muenzanisi abudise chiratidzo chinopindirana chekuchinja. Kazhinji, iyo yekuenzanisa isina kunaka inoiswa pasi uye iyo chiratidzo UI UT inoiswa kubva kune yakanaka terminal. Kana UI UT> 0, muenzanisi anoburitsa nhanho yakanaka yeazere amplitude; apo UI UT0, muenzanisi anoburitsa yakashata nhanho yeakazara amplitude.  Iko kushandiswa kwe dc mota yekumhanyisa control system.

Iyo modulation process yechiratidzo waveform ne-voltage-pulse wide converter inoratidzwa muFig. 2. Pamusana pekugadzirisa maitiro emuenzanisi, amplitude yechiratidzo chekubuda kweU.S. Iyo frequency yeUS inotarwa neiyo frequency ye triangular wave.

Kana iyo yekuraira chiratidzo UI = 0, iyo inobuda chiratidzo US ndeye rectangular pulse ine yakaenzana yakanaka uye yakaipa pulse upamhi. Chekutanga, iyo mota logic yekudzora siginecha inopihwa neiyo chip chip microcomputer, kunyanya kusanganisira iyo mota inomhanya inotungamira chiratidzo Dir, iyo mota yekumhanya inodzora chiratidzo PWM uye mota braking chiratidzo Brake. Pulse width modulation inobva yaitwa neTL 494, uye chiratidzo chayo chekubuda chinotyaira H-bhiriji simba redunhu kutyaira iyo DC mota.   Iko kushandiswa kwe dc mota yekumhanyisa control system. Iyo H-bhiriji inoumbwa mana epamusoro-simba akakwidziridzwa FETs, ayo anoshanda kushandura chifambiso chemota uye nekukudza chiratidzo chekutyaira.

Mudunhu rinoona iyo PWM kutonga kwemota, sisitimu inoshandisa TL494 chip, uye dunhu rayo remukati rinoumbwa nereferensi voltage generation wedunhu, oscillation wedunhu, inopindirana nguva yekugadziridza dunhu, maviri kukanganisa amplifiers, pulse wide modulation comparator uye kubuda dunhu, nezvimwewo, TL494 chip Inoshandiswa zvakanyanya mune imwechete-inopera kumberi kaviri-chubhu, hafu-bhiriji, yakazara-bhiriji inochinja magetsi.   Iko kushandiswa kwe dc mota yekumhanyisa control system. Yese pulse width modulation circuits yakabatanidzwa. Iyo chip ine yakavakirwa-mukati mutsara sawtooth oscillator ine maviri chete ekunze oscillating zvikamu (imwe resistor uye imwe capacitor). Yakavakirwa-mukati kukanganisa amplifier. Mukati inoramba iyo 5V referensi voltage sosi. Nguva yakafa inogona kugadziriswa. Iyo yakavakirwa-mukati simba transistor inopa 500mA drive kugona. Sunda kana kudhonza nzira mbiri dzekuburitsa.