測速電機工作原理與使用范圍詳解

測速電機是輸出電動勢與轉(zhuǎn)速成比例的微特電機。測速電機的繞組和磁路經(jīng)精確設(shè)計，其輸出電動勢E和轉(zhuǎn)速n成線性關(guān)系，即E=Kn，K是常數(shù)。改變旋轉(zhuǎn)方向時輸出電動勢的極性即相應(yīng)改變。在被測機構(gòu)與測速發(fā)電機同軸聯(lián)接時，只要檢測出輸出電動勢，就能獲得被測機構(gòu)的轉(zhuǎn)速，故又稱速度傳感器。

測速電機的工作原理

測速電機的工作原理如上圖所示。當(dāng)轉(zhuǎn)子靜止時，勵磁繞組接到頻率和大小都不變的單相交流電源上，在勵磁繞組的軸線方向上產(chǎn)生一個按正弦規(guī)律隨時間變化的脈動磁通Φ1。由于磁通Φ1的方向與輸出繞組L。的軸線垂直，輸出繞組中不會產(chǎn)生感應(yīng)電動勢，故輸出電壓Uo為零。當(dāng)轉(zhuǎn)子旋轉(zhuǎn)時，轉(zhuǎn)子與脈動磁場Φ1有相對運動，轉(zhuǎn)子因切割磁通Φ1而產(chǎn)生感應(yīng)電流，轉(zhuǎn)子的感應(yīng)電流又產(chǎn)生磁通Φ2。磁通Φ1與Φ2的軸線相互垂直，Φ2的方向與輸出繞組軸線重合。因此，在輸出繞組中有感應(yīng)電動勢產(chǎn)生，也就是有電壓Uo輸出。輸出電壓的大小與轉(zhuǎn)速成正比。當(dāng)轉(zhuǎn)子反轉(zhuǎn)時，輸出電壓的相位也相反。

測速電機具有的特點：

1、測速發(fā)電機的輸出電壓信號，電壓量程可在10幾伏到幾百伏之間;

2、測速電機輸出信號頻率電壓隨著轉(zhuǎn)速變化，為-漸變信號，用一一個電壓表就可以進(jìn)行觀測了;

測速發(fā)電機的使用范圍

（1）用做測速元件

（2）用做校正元件

（3）用做解算元件

常用RADIO-ENERGIE測速電機型號：

RE.0444R1026/EG

RE.0444R1L26G

RE.0444R1L26A

RDC 14 MF 1X60 CA 160

RDC14MF0.01CA160

RDC14MF0.02CA160

RDC14MF0.04CA160

RDC14MF0.06CA160

RDC205P0.007CA127

RDC206SP0.018CA/BA

RDC210 D0.02CA

RDC210KE0.01CA160

RDC215MF0.06CA160

RE.0110S1CB0.002CA

RE.0315 CA碳刷

RE.0315 LT1B0.03CA/8X15P

RE.0315LJ1B0.03 CA

RE.0315LN1B0.02CA

RE.0315LN1B0.03CA

RE.0315LN1B0.04 CA

RE.0315LT1B0.03 CA

RE.0444 ATEX B 0.06EG 軸徑11mm，帶鍵槽

RE.0444 N1 C S 0,12 CA

RE.0444 N1B0.06EG配套碳刷

RE.0444 R1 ATEX B 0.06 CA

RE.0444L1B 0.06EG(11*30)

RE.0444L1B0.01 CA(11x30)

RE.0444L1B0.06CA / JT

RE.0444L1B0.06CA(11x30)

RE.0444L1B0.06CA(7*30)

RE.0444L1B0.06EG(7*30)

RE.0444N1B0.04EG(11*30)

RE.0444N1B0.06CA (7X30)

RE.0444N1B0.06EG IP55 7x30

RE.0444N1B0.06EG(11*30)

RE.0444N1B0.06EG(7X30)

RE.0444N1B0.15CA/11X30

RE.0444N1B0.15EG

RE.0444N1B0.15EG(7*30)

RE.0444N1B0.1EG (11*30))

RE.0444N1CB0.06 CA

RE.0444N1CB0.06CA(7X30)

RE.0444N1CS0.06 CA

RE.0444N1S0.12EG

RE.0444NV1B0.06CA(11X30mm)

RE.0444R1B0.02CA

RE.0444R1B0.02EG(11x30)

RE.0444R1B0.03EG

RE.0444R1B0.06CA(11X30)

RE.0444R1B0.06EG(11*30)

RE.0444R1B0.06EG(7x30)

RE.0444R1B0.06EG/JT

RE.0444R1B0.1CA

RE.0444R1B0.1EG

RE.0444R1B0.2CA 雙軸7mm/11mm

RE.0444R1B0.2CA(11X30)

RE.0444R1B0.2CA/SUP

RE.0444R1B0.2CA/SUP L&L850

RE.0444R1CB0.06CA(11x30)

RE.0444R1CB0.06EG (11x30)

RE.0444R1CB0.2 CA

RE.0444R1SIECB0.06 CA

RE.0444R2B2X0.06CA(11*30)

RE.0444R2B2X0.06EG(11*30)

RE.0444R2S2X0.06CA

RE.0444RT1B 0.06CA

RE.0444RT1B 0.06EG(11*30)

RE0444 NV1B0.06CA(7X30mm)

RDC16MF0.01CA110

RDC207 PE 0.02 CA 140

RE.0110S1CB0.001CA

RE.0315LN1S0.02CA

RE.0444N1B0.1EG(7X30mm)

RE.0444N1S0.06EG

RE.0444N1S0.06EG(11*30)

RE.0444NT1B0.06 CA(7X30)

RE.0444R1B0.06CA-S01

RE.0444R1S0.06 EG

RE.0444R2B2X0.06 CA / JT

RE.0444SR1B0.06 CA / JT / SUP GHR9

RE.0588US1CB0.06CA

RKI-C-F150

RMH9SP-T30B-25-S10T

RONE-160758DN (SN:9920115)

RONE-50025-4768K(SN:7726805 )

RONE-70047-2269K(SN:8014109)

RPEO-1418-C900115 (SN:704950