施耐德产品140ACI03000 Quantum

140ACI03000 Quantum

直流伺服电机的优点和缺点

优点：速度控制，转矩速度特性很硬，控制原理简单，使用方便，价格便宜。

缺点：电刷换向，速度限制，附加阻力，产生磨损微粒(无尘易爆环境不宜)。

步进电机都有哪些分类？ 反应式步进电、永磁式步进电机、混合式步进电机各有什么特点

步进电机是一种将电脉冲信号转换成相应角位移或线位移的电动机。 每输入一个脉冲信号，转子就转动一个角度或前进一步，其输出的角位移或线位移与输入的脉冲数成正比，转速与脉冲频率成正比。 因此，步进电动机又称脉冲电动机。

步进电机从其结构形式上可分为反应式步进电机（VariableReluctance，VR）、永磁式步进电机PermanentMagnet,PM）、混合式步进电机（HybridStepping,HS）、单相步进电机、平面步进电机等多种类型,在我国所采用的步进电机中以反应式步进电机为主。

步进电机的运行性能与控制方式有密切的关系,步进电机控制系统从其控制方式来看,可以分为三类：开环控制系统、闭环控制系统、半闭环控制系统。 半闭环控制系统在实际应用中一般归类于开环或闭环系统中。

反应式：定子上有绕组、转子由软磁材料组成。 结构简单、成本低、步距角小，可达1.2°、但动态性能差、效率低、发热大，可靠性难保证。

ASML/SVG 4022.455.2076

ASML/SVG Optical Power Detector I/F P/N: 923-8394-002

ASML/SVG DC/DC Converter FDC40-12S12 P/N:923-8437-001

ASML/SVG PC Board P/N:923-8049-001

ASML/SVG ADC Module PC Board P/N: 923-8063-002

ASML/SVG 4022.436.7967 Interl Mach D./Wafer H Assy.

ASML/SVG Pressure Transducer 270100-07 P/N:854-8116-001

ASML/SVG Robitech 980-2300 Series P/N:681-0181-009

ASML/SVG Control Board P/N:859-8210-004

ASML/SVG PC Board P/N: 859-8274-002

ASML/SVG Copley Controls Model 503 P/N:854-8052-001

ASML/SVG Frameless Reticle Handler Opt P/N:858-8150-001

ASML/SVG Frameless Reticle Handler P/N: 858-8164-001

ASML/SVG PC Board P/N:851-8124-005

ASML/SVG PC Board P/N:859-0832-007

ASML/SVG 4022.470.4376 IL OB Controller

ASML/SVG Dual Channel Aquisition Board P/N:865-8010-005

ASML/SVG RET/HNDLR Robitech Interface P/N:865-8293-003

ASML/SVG MS-2 Solid State Relay Board P/N:859-8276-001

ASML/SVG Pneumatic Manifold P/N: 865-0053-002

ASML/SVG PC Board P/N:864-8005-002

ASML/SVG Mono Stage Interconnect Board P/N:864-8046-002

ASML/SVG 4022.470.6998

ASML/SVG 4022.470.6999

ASML/SVG 4022.470.7000

ASML/SVG PC Board P/N:865-8022-004

ASML/SVG Board P/N: 864-8061-001

ASML/SVG Joystick Board P/N:879-8060-006

ASML/SVG A/D Conv.-Pos. Reg. Board P/N: 851-8518-005

ASML/SVG Board P/N: 851-8552-004

ASML/SVG Radisys Board P/N: 851-8833-001

ASML/SVG Joystick Board P/N: 879-8060-KKFN466

ASML/SVG Board P/N: 879-8077-002

ASML/SVG PC Board P/N: 851-8938-004

ASML/SVG Perkin-Elmer Board P/N: 851-9993-002

ASML/SVG 1X Relay Interconnect Board P/N: 921-8042-004

ASML/SVG Board P/N: 851-8514-007

ASML/SVG Perkin Elmer Board P/N: 851-8118-005

ASML/SVG Spare Part P/N: 879-0366-001

ASML/SVG Board P/N:851-8440-008

ASML/SVG Board With FCCD143AEDC P/N:851-8224-005

ASML/SVG Mag Control Amplifier Board P/N: 926-8012-001

ASML/SVG Perkin Elmer Board P/N: 851-8956-001

ASML/SVG Board P/N: 923-8357-002

ASML/SVG SBX/STD Bus Board P/N: 851-8554-003

ASML/SVG Astrodyne MTCC-0311 DC Power Supply +5,+/-15 V

ASML/SVG 4022.480.62611 Sensor Technics

ASML/SVG 851-8294-002 Cable Assy C Force Sensor

ASML/SVG 4022.435.04041 Pre-Load Unit-X Assy

ASML/SVG Entegris 4022.472.59471 New

ASML/SVG KKEO 025 PC Board P/N: 923-8040-003

ASML/SVG KKCO 092 PC Board P/N: 923-8072-003

ASML/SVG Signal Tower Model SLF-102V P/N:923-8497-001

ASML/SVG 1X Relay Interconnect A2403 P/N:921-8042-005

ASML/SVG MTI P/N: 921-2337-002

ASML/SVG KKEO 093 Mono Stage I/O P/N:923-8061-003 01

ASML/SVG ADC Module PC Board P/N: 923-8063-003

ASML/SVG Board P/N: 923-8041-001

ASML/SVG PC Board P/N: 851-8042-002

ASML/SVG RS Amp Control Board P/N: 923-8373-002

ASML/SVG Upper PC Board P/N: 923-8356-002

ASML/SVG 4022.455.18031 Cover Bottom Module

ASML/SVG PC Board Part Number: 851-8240-007

ASML/SVG PC Board Part Number: 859-0830-005

ASML/SVG PC Board Part Number: 922-8173-001

ASML/SVG DUAL CHANNEL AQUISITION VME BOARD 865-8010-005

ASML/SVG DUAL CHANNEL AQUISITION VME BOARD 865-8023-004

ASML/SVG PC Board P/N:865-8022-004

FCCD143AEDC ASML/SVG Board With FCCD143AEDC P/N:851-822

ASML/SVG Robitech Inc. Pressure Regulator P/N: 980-1023

ASML /SVG 4022.451.2556/4022.484.9561

ASML /SVG 4022.481.2556/4022.484.9562

ASML/SVG Green Laser Head 4022.455.0986 With Case

ASML/SVG 4022.484.8223.3 ATWT Cable Shuttle Body

USED-PULLED ZYGO OEM LASER HEAD ASML/SVG 923-0071-003

ASML/SVG 4022.480.0053/4022.480.0009/4022.408.1673

ASML/SVG AS4020/ES14042-2 Aerotech P/N:923-8083-001

ASML/SVG 4022.470.6469 Motorola MVME 2431

ASML/SVG 4022.471.6319 Interlock Board

HP Agilent 5517D Laser Head C19 ASML/SVG 4022.454.71615

ASML/SVG Servo I/O Board P/N: 923-8007-003

ASML/SVG ZMI 2002 zygo PC Board P/N: 923-8312-001

ASML/SVG New PC Board P/N:923-8036-003

ASML/SVG Ziatech PC Board ZT 8809A P/N: 681-0116-084

ASML/SVG PC Board P/N:923-8044-001

ASML/SVG Focus Daughter Board P/N:865-8016-002

ASML/SVG ZBX Mother Board P/N:865-8215-002

ASML/SVG Board P/N: 851-8541-004

ASML/SVG ATWT 4022.484.96532 Coil Limms ASSY

ASML/SVG 4022.454.6646 Variable Attenuator Assy.

ASML/SVG A2501 Shutter Interlock Cont P/N: 859-0727-001

ASML/SVG HPAS Preamplifier PC Board P/N:921-8054-003

ASML/SVG Jenoptik Jena Lens Lot of 8 

ASML/SVG Manifold Valve W/ SY3240R-5 P/N: 865-0007-004

ASML/SVG 4022.454.66104 Coarse P.A. II Assy.

ASML/SVG 505-06080-04 Shutter Assy. Automatic

ASML/SVG Module 4022.437.1996

ASML/SVG 4022.477.4843 CCM Elev. Break Override Switch

ASML/SVG A1300 Power I/O 865-8025-001-02

ASML/SVG 4022.437.0760 Laser Stepper Interface LSI

ASML/SVG 859-0399-002 Kollmorgan 00-S0613-038

ASML/SVG 4022.430.1239 HP Agilent 10895A VMEbus Laser

ASML/SVG 923-8244-001 Power Supply SMC

ASML/SVG 4022.471.5027 TCB Syncbus Trigg

ASML/SVG 4022.502.29089 Emission Detection Assy V.L

ASML/SVG Cage Code OSMX8 05-05103-08 P/N:854-2366-001

ASML/SVG PC Board P/N:864-8039-003

ASML/SVG Module 4022..436.1064

ASML /SVG 4022.454.6940 ESA-X1

ASML/SVG 4022.431.20761 Cold Light Mirror 365

ASML/SVG Board P/N: 923-8035-002

ASML/SVG 4022.456.07242 8” Wafertable C.C. Flat TIN SSP

ASML/SVG 4022.454.59231 Beam Steering Fixed Mirror

ASML/SVG 4022.435.05718 8” Wafertable

ASML/SVG 4022.471.5457 Power Amp. Controller

ASML/SVG 4022.481.81541 Site Dep. Parts AT-T

ASML/SVG 4022.436.5270 IIB Board

ASML/SVG 4022.470.1998 SHB MDC 4022.470.4359

ASML/SVG 4022.471.99062 PAAC 550V/25A

ASML/SVG 4022.4022.456.2982.2 Eir Heat Exchange

ASML/SVG Optical Item 854-0141-001

ASML/SVG A5673 POTCS CAL Valve PCB P/N: 921-8104-001

ASML/SVG PC Board Part Number: 859-0742-007