力士乐EC电机0608701018,德国REXROTH电机,EC马达,上海韦米机电设备有限公司供应产品,原厂原装,拒绝高仿假货,买的安心,用的放心;多渠道供应,价格优惠,常用产品现货供应;欢迎询价采购
EC电机bai是三相交流永磁同步电机。EC 电机电源为直流电源、内置直流变交流(通过六个逆变模块)、采用转子位置反馈、三相交流、永磁、同步电机。
EC电机为内置智能控制模块的直流无刷式免维护型电机,自带RS485输出接口、0-10V传感器输出接口、4-20mA调速开关输出接口、报警装置输出接口及主从信号输出接口。该产品具有高智能、高节能、高效率、寿命长、振动小、噪声低以及可连续不间断工作等特点。
无刷直流电机由于省去了励磁用的集电环和电刷,在结构上大大简化。同时不但改善了电机的工艺性,而且电机运行的机械可靠性大为增强,寿命增加。
同时气隙磁密可大大提高,电机指标可实现*佳设计,其直接效果就是电机体积缩小,重量减轻。不仅如此,较其它电机而言,还具有非常优异的控制性能。这是因为:其一,由于永磁材料的高性能而使电机的力矩常数、转矩惯量比、功率密度等大大提高。通过合理设计又能使转动惯量、电气及机械时间常数等指标大大降低,作为伺服控制性能的主要指标有了很大改善。其二,现代永磁磁路的设计已较完善,加上永磁材料的矫顽力高,因而永磁电机的抗电枢反应及其抗去磁的能力大大加强,电机的控制参量随外部扰动影响大大减小。其三,由于用永磁体取代了电励磁,减少了励磁绕组及励磁磁场的设计,因而减少了励磁磁通、励磁绕组电感、励磁电流等诸多参数,从而直接减少了可控变量或参量。综合以上各因素可以说永磁电机具有优异的可控性。
无刷直流电动机需要矩形波电流,逆变器持续运行时的电流额定值指的就是这个矩形波的峰值。感应电机需要正弦波电流,逆变器持续运行时的电流额定值一般指的是这个正弦波的有效值。为保持逆变器对电动机电流的控制能力,逆变器直流电压与电动机感应电动势间应有足够的差值。因此无刷直流电动机梯形波感应电动势和感应电动机正弦波感应电动势可以达到的峰值都受到逆变器直流电压的限制。在这种情况下,若假定无刷直流电动机和感应电动机电流的峰值相等,则前者功率输出要比后者高出33%,也就是说,同一台整流器/逆变器可以驱动比感应电机输出功率高出33%的无刷直流电动机。
无刷直流电动机是采用半导体开关器件来实现电子换向的,即用电子开关器件代替传统的接触式换向器和电刷。它具有可靠性高、无换向火花、机械噪声低等优点,广泛应用于高档录音座、录像机、电子仪器及自动化办公设备中。
无刷直流电动机由永磁体转子、多极绕组定子、位置传感器等组成。位置传感按转子位置的变化,沿着一定次序对定子绕组的电流进行换流(即检测转子磁极相对定子绕组的位置,并在确定的位置处产生位置传感信号,经信号转换电路处理后去控制功率开关电路,按一定的逻辑关系进行绕组电流切换)。定子绕组的工作电压由位置传感器输出控制的电子开关电路提供。
力士乐EC电机0608701018
0608701018 SERVOMOTOR EC304 SZ4
0608750110 SUPPLY MODULE VM350
0608843007 ACCESS POINT NX-ACCESS
0608810050 ADAPTER ESOA025 E SZ3
0608843021 ADAPTER MODULE NX-A3
0608810032 ANGLE HEAD .
0608810034 ANGLE HEAD .
0608810006 ANGLE HEAD .
0608810004 ANGLE HEAD .
0608810005 ANGLE HEAD .
0608810010 ANGLE HEAD 3 W 7
0608810011 ANGLE HEAD 3 W 8
0608843023 ANGLE HEAD NXAH030
0608843022 ANGLE HEAD NXAH11-15
0608843024 ANGLE HEAD NXAH50-65
0608841008 ANGLE SCREWDRIVER ECH28
0608841010 ANGLE SCREWDRIVER ECH37
0608841009 ANGLE SCREWDRIVER ECH37-MG
0608840015 ANGLE SCREWDRIVER IW 12-2
0608840016 ANGLE SCREWDRIVER IW 12-3
0608840023 ANGLE SCREWDRIVER IW 190-1
0608840017 ANGLE SCREWDRIVER IW 25-1
0608840018 ANGLE SCREWDRIVER IW 25-2
0608830033 ASSEMBLY MOUNTING BT12
0608830035 ASSEMBLY MOUNTING BT16
0608830030 ASSEMBLY MOUNTING BT2.2
0608830029 ASSEMBLY MOUNTING BT4
0608830032 ASSEMBLY MOUNTING BT4.4
0608830031 ASSEMBLY MOUNTING BT8
0608830036 ASSEMBLY MOUNTING BT8.8
0608830034 ASSEMBLY MOUNTING FAMOOSER BT6
0608843009 AUXILIARY HANDLE NXPH
0608843019 BATTERY PACK NX-BP2-36V
0608840019 ANGLE SCREWDRIVER IW 35-1
0608840020 ANGLE SCREWDRIVER IW 35-2
0608840013 ANGLE SCREWDRIVER IW 5-2
0608840014 ANGLE SCREWDRIVER IW 5-3
0608840034 ANGLE SCREWDRIVER IW 50-1
0608840035 ANGLE SCREWDRIVER IW 50-2
0608840021 ANGLE SCREWDRIVER IW 80-1
0608840022 ANGLE SCREWDRIVER IW 80-2
0608830127 ASSEMBLY MOUNTING BSE 19 ZOLL
0608830140 ASSEMBLY MOUNTING BSE220
0608830171 CABLE ML036 SENSOR MOTOR
0608830222 CABLE ML046 SENSOR MOTOR
0608843002 CHARGER NX-BC36V
0608841087 HANDHELD NUTRUNNER CC-ESA030S 6-30NM
0608841088 HANDHELD NUTRUNNER CC-ESA040S 8-40NM
0608841092 HANDHELD NUTRUNNER CC-ESA100S 20-100NM
0608841089 HANDHELD NUTRUNNER CC-ESM012QD 2.4-12
0608841094 HANDHELD NUTRUNNER CC-ESM025HT 5-25NM
0608841015 HANDHELD NUTRUNNER ECH012
0608841012 HANDHELD NUTRUNNER ECH57-OHNE ME
0608841028 HANDHELD NUTRUNNER ESA005G 1-5NM
0608841224 HANDHELD NUTRUNNER ESA005G-G 1-5NM
0608841018 HANDHELD NUTRUNNER ESA005S 1-5NM
0608830264 COMMUNICAT.MODUL KE350
0608830265 COMMUNICAT.MODUL KE350G IL
0608830051 CONTROL UNIT SE 100
0608830116 CONTROL UNIT SE 200 DIGITAL MIT MB
0608841209 HANDHELD NUTRUNNER ESA065S-G 13-65NM
0608841230 HANDHELD NUTRUNNER ESA075G-G 15-75NM
0608841210 HANDHELD NUTRUNNER ESA075S-G 15-75NM
0608841211 HANDHELD NUTRUNNER ESA100S-G 20-100NM
0608841212 HANDHELD NUTRUNNER ESA150S-G 30-150NM
0608841213 HANDHELD NUTRUNNER ESA220S-G 44-220NM
0608841043 HANDHELD NUTRUNNER ESM012QD 2.4-12NM
0608841255 HANDHELD NUTRUNNER ESM012QD-G 2.4-12NM
0608841042 HANDHELD NUTRUNNER ESM012SD 2.4-12NM
0608841254 HANDHELD NUTRUNNER ESM012SD-G 2.4-12NM
0608830128 CONTROL UNIT SE200R
0608830262 CONTROL UNIT SE352
0608841204 HANDHELD NUTRUNNER ESA005S-G 1-5NM
0608841225 HANDHELD NUTRUNNER ESA013G-G 1-13NM
0608841205 HANDHELD NUTRUNNER ESA013S-G 1-13NM
0608841226 HANDHELD NUTRUNNER ESA030G-G 6-30NM
0608841206 HANDHELD NUTRUNNER ESA030S-G 6-30NM
0608841227 HANDHELD NUTRUNNER ESA040G-G 8-40NM
0608841207 HANDHELD NUTRUNNER ESA040S-G 8-40NM
0608841228 HANDHELD NUTRUNNER ESA056G-G 11-56NM
0608841208 HANDHELD NUTRUNNER ESA056S-G 11-56NM
0608841229 HANDHELD NUTRUNNER ESA065G-G 13-65NM
0608841045 HANDHELD NUTRUNNER ESM025HT 5-25NM
0608841257 HANDHELD NUTRUNNER ESM025HT-G 5-25NM
0608841044 HANDHELD NUTRUNNER ESM025SD 5-25NM
0608841256 HANDHELD NUTRUNNER ESM025SD-G 5-25NM
0608841046 HANDHELD NUTRUNNER ESM035SD 7-35NM
0608841258 HANDHELD NUTRUNNER ESM035SD-G 7-35NM
0608841245 HANDHELD NUTRUNNER ESV025-G 5-25NM
0608842011 HANDHELD NUTRUNNER NXA011S 3-11NM
0608842012 HANDHELD NUTRUNNER NXA011S-B 3-11NM
0608842001 HANDHELD NUTRUNNER NXA015S 3-15NM
0608843018 HOLDING DEVICE NX-HD
0608830039 INTERFACE MODULE IB3
0608830259 INTERFACE MODULE IM24V
0608830267 INTERFACE MODULE IMDEV
0608830302 INTERFACE MODULE IMECAT
0608830271 INTERFACE MODULE IMENIP
0608830273 INTERFACE MODULE IMMTCP
0608800638 REDUCTION GEAR .
0608800547 REDUCTION GEAR .
0608800508 REDUCTION GEAR .
0608800583 REDUCTION GEAR .
0608800506 REDUCTION GEAR .
0608800606 REDUCTION GEAR .
0608800618 REDUCTION GEAR .
0608800509 REDUCTION GEAR .
0608800544 REDUCTION GEAR .
0608800601 REDUCTION GEAR .
0608800500 REDUCTION GEAR VNK 1B 156
0608800513 REDUCTION GEAR VNK 1B 191
0608800514 REDUCTION GEAR VNK 1C 191
0608800517 REDUCTION GEAR VNK 1C 226
0608800507 REDUCTION GEAR VNK 2A 181
0608800527 REDUCTION GEAR VNK 2A 216
0608800530 REDUCTION GEAR VNK 2A 251
0608800504 REDUCTION GEAR VNK 2B 181
0608800528 REDUCTION GEAR VNK 2B 216
0608800531 REDUCTION GEAR VNK 2B 251
0608800505 REDUCTION GEAR VNK 2C 181
0608800529 REDUCTION GEAR VNK 2C 216
0608800532 REDUCTION GEAR VNK 2C 251
0608800518 REDUCTION GEAR VNL 1A 226
0608800521 REDUCTION GEAR VNL 1A 260
0608800524 REDUCTION GEAR VNL 1A 294
0608800519 REDUCTION GEAR VNL 1B 226
0608800522 REDUCTION GEAR VNL 1B 260
0608800525 REDUCTION GEAR VNL 1B 294
0608800520 REDUCTION GEAR VNL 1C 226
0608843029 PROTECTIVE SLEEVE NXP-PC
0608843012 PROTECTIVE SLEEVE NXPP012 HIGH-VOLTAGE
0608800546 REDUCTION GEAR .
0608800641 REDUCTION GEAR .
0608800640 REDUCTION GEAR .
0608800510 REDUCTION GEAR .
0608800511 REDUCTION GEAR .
0608800600 REDUCTION GEAR .
0608800503 REDUCTION GEAR .
0608800516 REDUCTION GEAR 740W 25HUB KURZ.GEH.
0608800596 REDUCTION GEAR VN 1A 127
0608800593 REDUCTION GEAR VN 1B 102
0608800597 REDUCTION GEAR VN 1B 127
0608800604 REDUCTION GEAR VN 1C 127
0608800598 REDUCTION GEAR VN 2A 177
0608800599 REDUCTION GEAR VN 2B 177
0608800605 REDUCTION GEAR VN 2C 177
0608800512 REDUCTION GEAR VNK 1A 191
0608800515 REDUCTION GEAR VNK 1A 226
0608800523 REDUCTION GEAR VNL 1C 260
0608800526 REDUCTION GEAR VNL 1C 294
0608800533 REDUCTION GEAR VNL 2A 251
0608800536 REDUCTION GEAR VNL 2A 285
0608800539 REDUCTION GEAR VNL 2A 319
0608800534 REDUCTION GEAR VNL 2B 251
0608800537 REDUCTION GEAR VNL 2B 285
0608800540 REDUCTION GEAR VNL 2B 319
0608800535 REDUCTION GEAR VNL 2C 252
0608800538 REDUCTION GEAR VNL 2C 285
0608842006 HANDHELD NUTRUNNER NXA015S-B 3-15NM
0608842002 HANDHELD NUTRUNNER NXA030S 9-30NM
0608842007 HANDHELD NUTRUNNER NXA030S-B 9-30NM
0608842003 HANDHELD NUTRUNNER NXA050S 15-50NM
0608842008 HANDHELD NUTRUNNER NXA050S-B 15-50NM
0608842013 HANDHELD NUTRUNNER NXA065S 20-65NM
0608842014 HANDHELD NUTRUNNER NXA065S-B 20-65NM
0608842005 HANDHELD NUTRUNNER NXP012QD 1.8-12NM
0608842010 HANDHELD NUTRUNNER NXP012QD-B 1.8-12NM
0608800541 REDUCTION GEAR VNL 2C 319
0608800553 REDUCTION GEAR VUK 1A 156
0608800556 REDUCTION GEAR VUK 1A 191
0608800559 REDUCTION GEAR VUK 1A 226
0608800554 REDUCTION GEAR VUK 1B 156
0608800557 REDUCTION GEAR VUK 1B 181
0608800560 REDUCTION GEAR VUK 1B 226
0608800555 REDUCTION GEAR VUK 1C 156
0608800558 REDUCTION GEAR VUK 1C 191
0608800561 REDUCTION GEAR VUK 1C 226
0608800570 REDUCTION GEAR VUL 1C 294
0608800550 REDUCTION GEAR VUL 2A 251
0608800582 REDUCTION GEAR VUL 2A 285
0608800585 REDUCTION GEAR VUL 2A 319
0608800580 REDUCTION GEAR VUL 2B 251
0608800586 REDUCTION GEAR VUL 2B 319
0608800581 REDUCTION GEAR VUL 2C 251
0608800584 REDUCTION GEAR VUL 2C 285
0608800587 REDUCTION GEAR VUL 2C 319
0608800551 REDUCTION GEAR VUL 2D 256
0608830266 INTERFACE MODULE IMPDP
0608830272 INTERFACE MODULE IMPNIO
0608830312 INTERFACE MODULE IMPNIO2
0608830107 MEASURING CABLE
0608843005 MEMORY BOARD NX-SD
0608800588 REDUCTION GEAR VUK 2D 221
0608800589 REDUCTION GEAR VUK 2D 256
0608800562 REDUCTION GEAR VUL 1A 226
0608800565 REDUCTION GEAR VUL 1A 260
0608800568 REDUCTION GEAR VUL 1A 294
0608800563 REDUCTION GEAR VUL 1B 226
0608800566 REDUCTION GEAR VUL 1B 260
0608800569 REDUCTION GEAR VUL 1B 294
0608800564 REDUCTION GEAR VUL 1C 226
0608800567 REDUCTION GEAR VUL 1C 260
0608843010 PARTS SET NX-R COLOR RINGS MIX&
0608843016 PROTECTIVE CAP NXAPAH1 5-PACK
0608843015 PROTECTIVE CAP NXAPAH2 5-PACK
0608843028 PROTECTIVE SLEEVE NXA-PC
0608843011 PROTECTIVE SLEEVE NXAP030 HIGH-VOLTAGE
0608800590 REDUCTION GEAR VUL 2D 290
0608800591 REDUCTION GEAR VUL 2D 324
0608830289 SINGLE CONTROLLER CC-CS351E-D
0608830274 SINGLE CONTROLLER CS351E-D IL
0608830281 SINGLE CONTROLLER CS351E-D NK
0608830258 SINGLE CONTROLLER CS351E-G
0608830275 SINGLE CONTROLLER CS351E-G IL
0608830254 SINGLE CONTROLLER CS351S-D
0608830255 SINGLE CONTROLLER CS351S-G
0608841006 SMART TOOL ECW130-MG
0608841001 SMART TOOL ECW35-MG
0608841003 SMART TOOL ECW35-OHNE MESSWERTGEBER
0608841002 SMART TOOL ECW65-MG
0608841004 SMART TOOL ECW65-OHNE MESSWERTGEBER
0608841005 SMART TOOL ECW95-MG
0608830307 SOFTWARE LICENSING LS-ESG
0608830115 SOFTWARE PACKAGE BED.-SOFTWARE SEPR V&
0608830079 SOFTWARE PACKAGE BEDIENEROBERF
0608840024 SCREWDRIVER MITTELGRIFF IM 10-1
0608840025 SCREWDRIVER MITTELGRIFF IM 10-2
0608840026 SCREWDRIVER MITTELGRIFF IM 15-1
0608840027 SCREWDRIVER MITTELGRIFF IM 15-2
0608840028 SCREWDRIVER MITTELGRIFF IM 28-1
0608840029 SCREWDRIVER MITTELGRIFF IM 28-2
0608840030 SCREWDRIVER NG 2 I=32,7 GR.44
0608840032 SCREWDRIVER NG 2 I=42,8 GR.48
0608840031 SCREWDRIVER NG 3 I=32,7 GR.44
0608840033 SCREWDRIVER NG 3 I=42,8 GR.48
0608830205 SCHRAUBSTEUERUNG SEH 302
0608830121 SOFTWARE PACKAGE BEDIENERSOFTWARE PEP&
0608830080 SOFTWARE PACKAGE BEDIENPROGRAMM B011 &
0608830304 SOFTWARE PACKAGE BS350 V2.4-10X
0608830303 SOFTWARE PACKAGE BS350 V2.4-1X
0608830305 SOFTWARE PACKAGE BS350 V2.4-PLANT
0608830309 SOFTWARE PACKAGE BS350 V2.5-10X
0608830308 SOFTWARE PACKAGE BS350 V2.5-1X
0608830310 SOFTWARE PACKAGE BS350 V2.5-PLANT
0608830082 SOFTWARE PACKAGE SCHRAUBDATEN-STATIST&
0608830081 SOFTWARE PACKAGE STATISTIKPR.F.HERCUL&
0608800002 SPINDLE BEARING .
0608800070 SPINDLE BEARING .
0608800028 SPINDLE BEARING .
0608800024 SPINDLE BEARING .
0608800082 SPINDLE BEARING .
0608800076 SPINDLE BEARING .
0608800023 SPINDLE BEARING .
0608800071 SPINDLE BEARING .
0608800026 SPINDLE BEARING .
0608800022 SPINDLE BEARING .
0608830102 SOFTWARE PACKAGE V.1T8 AUSWERTPR.VO
0608830316 SOFTWARE PACKAGE V2.6-10X
0608830315 SOFTWARE PACKAGE V2.6-1X
0608830317 SOFTWARE PACKAGE V2.6-PLANT
0608830320 SOFTWARE PACKAGE V2.7-10X
0608830319 SOFTWARE PACKAGE V2.7-1X
0608830321 SOFTWARE PACKAGE V2.7-PLANT
0608800025 SPINDLE BEARING .
0608800083 SPINDLE BEARING .
0608800080 SPINDLE BEARING .
0608800066 SPINDLE BEARING G 1A 127
0608800067 SPINDLE BEARING G 1B 127
0608800074 SPINDLE BEARING G 1C 127
0608800068 SPINDLE BEARING G 2A 177
0608800069 SPINDLE BEARING G 2B 177
0608800075 SPINDLE BEARING G 2C 177
0608800032 SPINDLE BEARING GK 1A 191
0608800035 SPINDLE BEARING GK 1A 226
0608800033 SPINDLE BEARING GK 1B 191
0608800036 SPINDLE BEARING GK 1B 226
0608800045 SPINDLE BEARING GL 1B 294
0608800040 SPINDLE BEARING GL 1C 226
0608800043 SPINDLE BEARING GL 1C 260
0608800029 SPINDLE BEARING GL 1C 294
0608800019 SPINDLE BEARING GL 2 C 251
0608800051 SPINDLE BEARING GL 2A 251
0608800053 SPINDLE BEARING GL 2A 285
0608800052 SPINDLE BEARING GL 2B 251
0608800054 SPINDLE BEARING GL 2B 285
0608800055 SPINDLE BEARING GL 2C 285
0608800034 SPINDLE BEARING GK 1C 191
0608800037 SPINDLE BEARING GK 1C 226
0608800005 SPINDLE BEARING GK 2 C 216
0608800046 SPINDLE BEARING GK 2A 216
0608800047 SPINDLE BEARING GK 2B 216
0608800038 SPINDLE BEARING GL 1A 226
0608800041 SPINDLE BEARING GL 1A 260
0608800044 SPINDLE BEARING GL 1A 294
0608800039 SPINDLE BEARING GL 1B 226
0608800042 SPINDLE BEARING GL 1B 260
0608800078 STRAIGHT OUTPUT 2GB82 SZ2 1/4"QC
0608800063 STRAIGHT OUTPUT G1B102 SZ3 1/4"QC
0608800064 STRAIGHT OUTPUT G2A152 SZ3 3/8"SQ
0608820033 TRANSDUCER .
0608820011 TRANSDUCER .
0608820028 TRANSDUCER .
0608820047 TRANSDUCER .
0608820034 TRANSDUCER .
0608820031 TRANSDUCER .
0608820048 TRANSDUCER .
0608820032 TRANSDUCER .
0608820029 TRANSDUCER .
0608820007 TRANSDUCER 12NM
0608800006 STRAIGHT OUTPUT GK2A181 SZ4 1/2"SQ
0608800048 STRAIGHT OUTPUT GK2A251 SZ4 1/2"SQ
0608830040 SUBASSEMBLY DRUCK DB2
0608830037 SUBASSEMBLY MOMENTEN MB2
0608830038 SUBASSEMBLY WINKEL WB2
0608843003 SUSPENSION DEVICE NXAMT ROTAT
0608843004 SUSPENSION DEVICE NXPB
0608830251 TIGHTENING SYS BOX SB356 6-CHANNEL
0608843008 TOOL SHELF NXPT
0608830142 ZENTRALKARTE ZSE 220
0608800571 REDUCTION GEAR VUK 2A 181
0608800574 REDUCTION GEAR VUK 2A 216
0608800577 REDUCTION GEAR VUK 2A 251
0608800572 REDUCTION GEAR VUK 2B 181
0608800575 REDUCTION GEAR VUK 2B 216
0608800578 REDUCTION GEAR VUK 2B 251
0608800573 REDUCTION GEAR VUK 2C 181
0608800576 REDUCTION GEAR VUK 2C 216
0608800579 REDUCTION GEAR VUK 2C 251
0608800552 REDUCTION GEAR VUK 2D 186
0608820005 TRANSDUCER 1NM
0608820110 TRANSDUCER 2DMC006 SZ2
0608820106 TRANSDUCER 2MV012
0608820046 TRANSDUCER 35NM
0608820112 TRANSDUCER 3DMC017 SZ3
0608820113 TRANSDUCER 3DMC060 SZ3
0608820107 TRANSDUCER 3MV060
0608820045 TRANSDUCER 3NM
0608820115 TRANSDUCER 4DMC160 SZ4
0608820108 TRANSDUCER 4MV160
0608820109 TRANSDUCER 5MV500
0608820006 TRANSDUCER 6NM
0608820049 TRANSDUCER 950NM
0608830172 TRANSDUCER LEITUNG ML043
0608830173 TRANSDUCER LEITUNG ML059
0608800614 UMSCHALTGETRIEBE 120/370W I 7,
0608800615 UMSCHALTGETRIEBE 370/740W I 1,
0608800613 UMSCHALTGETRIEBE 2U
0608800616 UMSCHALTGETRIEBE 3U
0608800617 UMSCHALTGETRIEBE 4U
位置传感器有磁敏式、光电式和电磁式三种类型。
采用磁敏式位置传感器的无刷直流电动机,其磁敏传感器件(例如霍尔元件、磁敏二极管、磁敏诂极管、磁敏电阻器或专用集成电路等)装在定子组件上,用来检测永磁体、转子旋转时产生的磁场变化。
采用光电式位置传感器的无刷直流电动机,在定子组件上按一定位置配置了光电传感器件,转子上装有遮光板,光源为发光二极管或小灯泡。转子旋转时,由于遮光板的作用,定子上的光敏元器件将会按一定频率间歇间生脉冲信号。
采用电磁式位置传感器的无刷直流电动机,是在定子组件上安装有电磁传感器部件(例如耦合变压器、接近开关、LC谐振电路等),当永磁体转子位置发生变化时,电磁效应将使电磁传感器产生高频调制信号(其幅值随转子位置而变化)。
直流电机具有响应快速、较大的起动转矩、从零转速至额定转速具备可提供额定转矩的性能,但直流电机的优点也正是它的缺点,因为直流电机要产生额定负载下恒定转矩的性能,则电枢磁场与转子磁场须恒维持90°,这就要藉由碳刷及整流子。碳刷及整流子在电机转动时会产生火花、碳粉因此除了会造成组件损坏之外,使用场合也受到限制。交流电机没有碳刷及整流子,免维护、坚固、应用广,但特性上若要达到相当于直流电机的性能须用复杂控制技术才能达到。现今半导体发展迅速功率组件切换频率加快许多,提升驱动电机的性能。微处理机速度亦越来越快,可实现将交流电机控制置于一旋转的两轴直交坐标系统中,适当控制交流电机在两轴电流分量,达到类似直流电机控制并有与直流电机相当的性能。
直流无刷电机是同步电机的一种,也就是说电机转子的转速受电机定子旋转磁场的速度及转子极数(p)影响。在转子极数固定情况下,改变定子旋转磁场的频率就可以改变转子的转速。直流无刷电机即是将同步电机加上电子式控制(驱动器),控制定子旋转磁场的频率并将电机转子的转速回授至控制中心反复校正,以期达到接近直流电机特性的方式。也就是说直流无刷电机能够在额定负载范围内当负载变化时仍可以控制电机转子维持一定的转速。
要让电机转动起来,首先控制部就必须根据hall-sensor感应到的电机转子目前所在位置,然后依照定子绕线决定开启(或关闭)换流器(inverter)中功率晶体管的顺序,使电流依序流经电机线圈产生顺向(或逆向)旋转磁场,并与转子的磁铁相互作用,如此就能使电机顺时/逆时转动。当电机转子转动到hall-sensor感应出另一组信号的位置时,控制部又再开启下一组功率晶体管,如此循环电机就可以依同一方向继续转动直到控制部决定要电机转子停止则关闭功率晶体管(或只开下臂功率晶体管);要电机转子反向则功率晶体管开启顺序相反。