Tagann an focal "servo" as the Greek word "slave". "Servo motor" can be understood as a motor that absolutely obeys the command of the control signal: before the control signal is sent out, the rotor stands still; when the control signal is sent out, the rotor rotates immediately; When the control signal disappears, the rotor can stop láithreach.
Is é an servo mótair is a micrea mótair a úsáidtear mar an actuator in an uathoibríoch rialú gléas . A feidhm is a thiontú an leictreach comhartha isteach an uilleach díláithriú nó uilleach treoluas de a rothlach seafta.
working principle
1. An servo system (servo mechanism) is an automatic control system that enables the output controlled quantities such as the position, orientation, and state of an object to follow any change in the input target (or given value). The servo main relies on pulses for positioning. Basically, it can be understood that when the servo motor receives one pulse, it will rotate the angle corresponding to one pulse to reach displacement.
Mar gheall ar an servo mótar féin tá an fheidhm de seoladh pulses % 2c mar sin gach uair an servo mótair rothlú an uillinn 2c sé beidh seol amach a a fhreagraíonn uimhir de pulses de pulses mar an servo mótair % 2c nó é ar a dtugtar a dúnta lúb. In this way, the system will know How many pulses are sent to the servo motor, and how many pulses are received back at the same time, so that the rotation of the motor can be precise controlled to achieve precise positioning, which can reach 7b{0}}.001mm.
DC agus AC Servo Mótair
1. DC servo motors are divided into brushed and brushless motors.
Brushed mótair tá íseal in costas % 2c simplí in struchtúr % 2c mór in ag tosú chasmhóiminte % 2c leathan i luas rialachán raon % 2c éasca go rialú % 2c agus a cheangal cothabháil % 2c ach inconvenient cothabháil (athsholáthar de carbóin scuaba) % 2c leictreamaighnéadacha cur isteach% 2c agus comhshaoil riachtanais. Dá bhrí sin% 2c sé is féidir a úsáid i coitianta tionsclaíoch agus sibhialta ócáidí go bhfuil íogair go costas.
Is é an brushless mótair beag i méid % 2c solas in meáchan % 2c mór in aschur% 2c tapa in freagra % 2c ard in luas % 2c beag in táimhe % 2c réidh in uainíocht agus cobhsaí in chasmhóiminte . Is é an rialú casta % 2c agus é tá sé éasca go cearnach tonn commutation nó sine tonn comaitéireacht . An mótar is cothabháil-saor in aisce % 2c tá ard éifeachtacht % 2c íseal oibriúcháin teocht % 2c íseal leictreamaighnéadach radaíocht % 2c fada saol % 2c agus is féidir a úsáid i timpeallachtaí éagsúla .
2. AC servo motors are also brushless motors, which are are divided into synchronous and asynchronous motors. At present, synchronous motors are generally used in motion control. Its power range is large and it can achieve a large power. Large inertia, low maximum rotational speed, and decreases rapidly as power increases. Dá bhrí sin, it is suitable for applications that run smoothly at low speeds.
3. An rotor taobh istigh an servo mótair is a buan maighnéad . An U% 2fV % 2fW trí chéim leictreachas rialaithe ag an tiománaí foirmeacha an leictreamaighnéadach réimse . An rotor rothlú faoi an gníomh de seo maighnéadach réimse . Ag an céanna am % 2c an ionchódóir aiseolas comhartha de an mótair seolta chuig an tiománaí an tiománaí . i gcomparáid leis an sprioc luach % 2c coigeartaigh an uillinn de uainíocht de an rotor an an rotor an cruinneas de an servo mótair braitheann ar an an cruinneas (uimhir de línte) de an ionchódóir.
An feidhmiúil difríocht idir AC servo mótair agus brushless DC servo mótar% 3a
Tá AC servo níos fearr mar gheall ar é tá sé rialaithe ag sine tonn agus an chasmhóiminte ripple is beag . A DC servo is beagán simplí agus saor .
% 0aPermanent maighnéad AC Servo Mótar
% 0aAn príomh buntáistí de buan maighnéad AC servo mótair i gcomparáid le DC servo mótair tá% 3a
⑴No brush and commutator, so it works reliably and has low requirements for maintenance and maintenance.
(2) Stator winding heat dissipation is more convenient.
⑷Suitable for high-speed and high-torque working conditions.
% e2% 91% b8 Beag toirt agus meáchan faoi an céanna cumhacht.
