实现热电能量的直接转换，由于它在中等的热源温度范围就能达到30%左右的效率，远高于热电半导体发电的效率（5%左右），又不必使用像热光伏光电器那样的高温材料，器件结构也比热电子发电器简单，因而颇受人们的关注，以空间电源为目标的研制工作在美国宇航局所设计划的支持下正积极顺利的进行。 系统应具有变频和工频两套控制回路,系统具有开环和闭环两套控制回路,一台变频器能控制两台空压机组，可用转换开关切换,根据空压机的工况要求，系统应保障电动机具有恒转矩运行特性一,为了防止非正弦波干扰空压机控制器，变频器输入端应有抑制电磁干扰的有效措施,在用电气量小的情况下，变频器处在低频运行时，应保障电机绕组温度和电机的噪音不超过允许的范围。SR560 DO-27 系统分析软件能够提前确定电缆的早期故障，这些分析包括：超温分析、温升趋势分析、温度梯度分析等，OES-2300电缆测温系统能够在电缆真正发生事故之前报警，具有极高的可靠性和准确性。OES-2300电缆测温系统具有多种报警方式，当发生报警时，主监控计算机能自动弹出报警窗口，显示出报警时间、报警测点名称和安装部位，在画面上，相应的测点会变色。

这时，便可按[修改]按钮保存数据到变送器。校准成功，程序会报告修改成功信息。第三个框中的数值调整位置是为了方便用户调整校准值而设置的。输出电流校准完毕后，可在常值电流输出中检查电流输出的线性度。校准成功后，关闭当前界面，变送器会进行正常的压力采集工作，无需重新启动。量程设置量程设置用于设置传感器的量程，其中零点压力和满点压力一般是指传感器的量程，操作如下：1、设置零点压力：单击[设置/量程标定/零点压力]菜单，新出现的窗口会自动读出当前变送器的零点压力值，在更改零点压力值一栏中输入新的数值，点击[修改]按钮，便完成操作，满点压力的设置操作同上，此处不再多述。ISO U5-P4-F6 我国自1994年1月1日起实施ITS-90国际温标。1990年国际温标（ITS-90）简介如下。1．温度单位热力学温度（符号为T）是基本功手物理量，它的单位为开尔文（符号为K），定义为水三相点的热力学温度的1/273.16。由于以前的温标定义中，使用了与273.15K（冰点）的差值来表示温度，因此现在仍保留这各方法。根据定义，摄氏度的大小等于开尔文，温差亦可以用摄氏度或开尔文来表示。

电极无需动，因而减免了移动电极的伺服机构，减免了伺服机构可能带来的不安全。但是，需要采取防范蒸汽散发的措施。无法进行实时控制，更谈不上‘闭环控制’，根据一次软起动的质量对装置进行下次再调整的余地不大。可能的调整仅仅是：极间距离，电解质浓度，液面高度。但调整裕度相当有限，具有一切液态软起动装置的共性，如发热量大、体积大，不能作到免维护。 缺点是不能自动化。普通诱导风机根据出风口的不同分为两种型号，一种管形出风口，型号为JIS；另一种球形出风口，型号为PYT。两种型号的质的区别在于管形出风口射程远，而球形出风口的诱导风均匀，两者总风量基本一致，没有本质区别。选型：在应用普通诱导风机的前提下，两者选型上主要依据厂所对风的要求和产品的外观要求或设计人员的个人爱好了，而且在价格上两者基本一致。 可满足由多个处理器构成的PLC系统的软件设计,可方便地处理事件驱动的程序执行（传统的PLC的软件模型仅为按时间周期执行的程序结构）对以工业通信网络为基础的分散控制系统（例如由现场总线将分布于不同硬件内的功能块构成一个具体的控制任务）尤其是软逻辑/PC控制这些正在发展中的新兴控制技术，该软件模型均可覆盖和适用。ISO U5-P4-F6 CAN主站控制器注重实时性，HMI系统注重友好显示和数据存储。虽然，CAN主站控制器的逻辑也可以部分转移到HMI系统，但是，我们还是建议客户根据控制工艺的要求，慎重考虑，合理的配置系统。组态软件CAN驱动，组态软件CAN驱动特定，组态软件CAN驱动，CAN总线数据传递给组态软件的接口，驱动要借助系统的设备驱动接口，读取CAN总线数据，并通过组态软件的标准形式，传递给组态软件的实时数据库。

1MBI400N-120-03 硬猫不需或仅需一个很小的驱动，安装简便，外置猫全是硬猫（除USB）。硬猫的成本较高。硬猫特点：独立的，完整的，不占用主机资源，不影响主机速度，不造成主机死机,不必须加入到主机系统中（硬件内置在主机总线上，软件安装入主机内, 软硬件均成为主机系统的一部分），不要求主机的操作系统。ISO U5-P4-F6 电机的铁间空隙 entrefer，电机底座 motor base，电机电刷 motor brush，电机调整器 regulator generator，电机定子铁芯自动焊接机 dynamo stator core automatic welder，电机端部磁场 end-region magnetic field of electrical machine

A06B-6134-K203发那科FANUC原装插头CN-M3030U-P15P2 E6C2-CWZ6 2000PISO U5-P2-F9SGMAH-02AAA41Magnetic stripe magnetic bean Otis elevator magnetic stripe kone elevator flat layer magnetic stripe kone magnetic stripe Otis magnetic stripe

A20B-2002-09AVELCONIC VLBSV-08015V VLBSV-10015V VLBSV-15015V VLBSV-08015V-B VLBSV-10015V-B VLBSV-15015V-BCPM2AE-60CDR-ASKD53/14MR-C10A1-B05Babbitt alloy rope end taper sleeve combination elevator rope end bar bus alloy bus rope end bar combination

A06B-6079-H208 BAB-M1804-CV2S12R88M-U20030LAISO 4021 A3-232616 l7 - 15kw power board电梯双折中分层门头三菱电梯双折中分层门头Otis双折中分层门

A06B-0247-B400 BFN-M1204P-V11S12-SRB2691CT204D4875SGMAS-A5ACAB1Fuji contactor SC - N5 Elevator contactor Elevator accessory Fuji contactor SC - N5

A860-0203-T010BN-M804N-V11P2-S63BM007FXE00SGDS-A5A01A三菱电梯安全触板光幕SFT-625A1三菱电梯二合一光幕赛福特光幕

A03B-0819-C102 VELCONIC VLBSV-24030-B VELCONIC VLBSV-30030 VLBSV-45030H5CX-ADU2-P1-05-01ETC618831-S5121Mitsubishi Outbound Drive Board LHH - 100AG 24L HH - 100BA G 24Outbound Display Board LHH - 022A

A16B-2203-0994 BB-H6.502P-V11Z8-RFP34-VN-101050 KS100A1800VSGMAH-A5A1F41Mitsubishi variable frequency door machine synchronous belt multi - wedge wheel

A20B-1007-660 VLASV-100P3-HXTL-Q5MB2-ZSKM400GA128DSB16F3203F0通力层门头通力电梯层门头通力电梯厅门头通力不锈钢厅门装置

A06B-0148-B175BN-H6.504P-V21S8-SE3X-NM11 4ISOEM U4-P2-O1-TAn Chuan G5 motherboard CPU board ETC5992迅达300P绳头橡胶垫迅达电梯轿底橡胶缓冲垫迅达电梯绳头缓冲垫

N860-1603-T051BB-Q4020P-P11S12109P0424H7D28 ISOEM U4-P2-O1-TJZSP-CSP21-05Otis handrail belt supporting pulley Otis escalator supporting pulley escalator accessories Otis escalator handrail belt supporting pulley

A860-0370-T003BHN-M1808n-V11SI2-150E3JK-5DM1-N6MBP75VBA060-50SGDB-20ADModern elevator display RDDS - 2 Becky electronic board 12 - 23 - 981 AABIJUR electronic board

RYC751C3-VVT2VELCONIC东荣TOEI VLNBT-025P2V-AXP60B22550MXS00KK500A800VSGDH-1AAE通力主机抱闸通力曳引机制动器MX10MX18RQ2通力3000电梯抱闸

A860-2020-T361VLBSV-24030V-COUP50B05010DCL60 G1205S-2WV7主板 5.5KW 380VMitsubishi traction sheave Mitsubishi elevator traction sheave EM - 3640710 HB14 * 7710 * 7 * 12710 * 12

A02B-0321-B500BFB-M1204P-V11P2MD-2601MG50G1BL1SGMAV-04ADA2CFujita traction sheave Fujita elevator traction sheave Fujita elevator accessories 825 * 6 * 16

A20B-2901-0941 VELCONIC东荣TOEI VLAST-012P1G5CA-1A-TP-E VI-J50-IYJZSP-CMP00-15LG traction sheave LG elevator traction sheave Jinchun traction sheave Xingma elevator traction sheave 625 * 7 * 12

6MBP100RA060-01 BB-H6.503P-V21P2E3JM-10M4-G SY Z2-W2-P4-O4CIMR-F7B45P5Otis car door hanging plate Mitsubishi car door hanging plate Mitsubishi elevator car door hanging plate Otis elevator car door hanging plate

A16B-1100-0260BB-Q2802P-P11P2/TP50B08050DBS31MI-260-MWSGD-A3BPOtis stainless steel step fast stainless steel step ETTJ 1000 BT Otis step fast step

A20B-2101-0040VLASV-100P3-HX3G3FV-PPGB2M57962ALUGFMED-B5MOM21Xinshida Outcall Display Board SM - 04 - VRF

A06B-6096-H301 BN-M3025P-C11P2 E3F3-D32 KK800A800VSGMGH-75DCB61现代梯级现代铝合金梯级HYUNDA1现代扶梯配件现代扶梯梯级

A06B-6096-H208 BB-M50.8N-V21Z8S8JX-G60024CRK-2412DCIMR-F7B4110Otis限速器涨绳轮Otis底坑涨绳轮Otis电梯限速器涨紧轮涨紧轮

A20B-8200-0590Thyssen compensation chain guide wheel Thyssen elevator compensation chain guide wheel Thyssen elevator accessories compensation sprocketCP1E-10DT-D

A16B-3200-0020Toshiba elevator door lock PB 269 Toshiba elevator hook lock Toshiba hook lock DBL - 2D BL - 5G3PX-220EHN

A02B-0091-C042Thyssen traction sheave Thyssen elevator traction sheave Flanders traction sheave 640 * 8 * 13720 * 8 * 13545G3PE-545B-3N

A06B-0202-B100Bakelite Cam Door Opening Machine Switch Wheel Touch Elevator Door Machine Bakelite Cam Elevator Door Opening Machine Switch CamCQM1H-ME16R

A06B-0148-B075 迅达门滑块迅达电梯门滑块迅达门导靴迅达电梯门导靴电梯配件M18E3F3-D32

A20B-0008-0630Four - wire new and old bus converter 98 SCSA 4D elevator converter elevator accessoriesGU05N-305

A20B-2900-0350Otis曳引轮Otis电梯曳引轮Otis电梯BWL1500曳引轮650*5*1316P60B13150HXS00

A90L-0001-0508Hitachi Elevator Triangle Lock Key Hitachi Triangle Lock Key Guang Ri Triangle Lock Key Elevator Outside UnlockPLE90-5

A20B-3300-0442 Kone traction sheave kone elevator traction sheave kone elevator accessories elevator traction sheave 750 * 56 * 13E3Z-T81-L

A860-0346-T141Hunan Elevator Door Rope Wheel Hunan Elevator Hall Door Rope Wheel Floor Door Rope Wheel Elevator Door Rope Wheel Elevator AccessoriesC200H-OD411

A06B-6060-H007#H504Automatic reset switch TV 231 - 11Y Elevator Travel Switch Elevator Limit Switch Elevator AccessoriesDRT2-ID08-1

A06B-0032-B075 通力靴衬通力电梯靴衬通力导靴通力电梯对重靴衬通力电梯导靴R88M-W05030H-S1

A06B-6164-H312#H580兰光曳引轮兰光曳引机轮Otis电梯曳引轮蓝光曳引轮408*5*10G3FD-X03S

A16B-2203-011Otis escalator handrail with entrance and exit plastic cover gab 438 bnx 2 gab 438 bnx 1 theo supportH8PS-8A H8PS-8AF

A06B-6079-H106Schindler traction sheave Schindler elevator traction sheave AMJ 60 - 0438 DR 657 * 6 * 13SRT2-ID16

A16B-2201-0103 Mitsubishi contactor SD - N35 contactor elevator contactor elevator accessories Mitsubishi elevator contactorE3X-NT21

A20B-8001-0062西子铝合金梯级西子梯级西子铝梯级西子扶梯梯级西子扶梯配件C500-IP004

A06B-0146-B077中分双折变频开门机三菱电梯中分双折变频开门机Otis变频开门机RS1A03AA

ST2-DC24VOtis门滑块Otis电梯门滑块PAA7593A-1Otis电梯门导靴厅门滑块E6C-CWZ

A06B-6130-H002 KONE Door Wheels KONE Elevator Door Wheels KONE Door Hanging Wheels KONE Door Hanging Wheels KONE Floor Door Hanging WheelsR88M-W75030H-BG33BJ

A06B-6070-H500Fujita Floor Door Head Fujita Elevator Floor Door Head Fujita Elevator Hall Door Head Elevator AccessoriesC500--IA222

A20B-3300-0392/03aOtis intercom XAA 25302 A8605 W - A8Z Hitachi DJ - A MT - 1201 - 1TS - Z1E6B2-CWZ1X 1000P/R

A20B-3300-0241Otis Steps Otis Stainless Steel Steps Otis Escalator Steps Otis Escalator Accessories XAA 26145 e1G9SB-2002-C

A20B-2900-0361 星玛电梯限位开关GAA177FD122BOtis电梯限位开关电梯配件G2R-2-SN(S)

N860-3118-T001Schindler traction sheave W200 traction sheave VM 160 traction sheave Schindler elevator traction sheave 642 * 67 * 13G3PA-430B-5

A20B-8100-0710 Schindler Elevator Traction Machine Schindler 300 P Traction Machine Schindler No Machine Room Traction MachineH5S-WB2

A06B-6079-H201Otis Floor Sensor SSGD - 1L ( NC ) Otis Elevator Floor Sensor XAA 177D B1SR93-8I-N-90-1050

A860-0203-T001 崇友门轮崇友电梯门轮崇友电梯层门轮崇友电梯厅门轮东芝门轮LTTBL-250

PD19A三菱电源Fujita Elevator Fan F B - 2B Fujita Elevator Car Fan Fujita Elevator Cross Flow FanCPM1A-8E

A20B-8101-0240Hollow guide shoe lining hollow guide shoe lining elevator counterweight shoe lining Mitsubishi elevator counterweight shoe lining lining plateEE-SPX406

A2USHCPU-S1三菱电梯编码器X65AC-01X65AC-001三菱编码器电梯配件编码器CS1W-OC211

A860-0372-T001Giant kone stainless steel step kone escalator step accessories kone step TJ 1000 sx - eRS1A05AAWA

A16B-2203-0370Hitachi door lock wheel Hitachi elevator door lock wheel Hitachi door knife wheel Hitachi lock ballP20B10200HXS3J

A06B-0253-B400Otis闸瓦18ATF闸瓦Otis电梯18ATF曳引机闸瓦Otis电梯配件闸皮CPM1A-8ET

A06B-0148-B075 Otis changeover switch CA40 - 25013 Otis elevator changeover switch elevator accessoriesP50B08050DXSS1

A06B-6240-H209Hitachi Elevator Oil Box Hitachi Oil Box Hitachi Elevator Accessories Oil Box Elevator Oil Box Guide Rail Oil BoxQS1A01AA03401S00

A50L-0001-0304 Hitachi Elevator Intercom Terminal DIS 1000 D - 4 LDIS 2000 D Hitachi Original Digital Intercom TerminalP50B08075HCS1J

A02B-0236-C237Mitsubishi board fx2n - 485 BD lhd - 410a display board lha - 023 ag Mitsubishi motherboard kcd - 60P50B07030DCS00

A20B-2002-0031 Jinchun traction wheel Fuji traction wheel Jiangnan elevator traction wheel Fuji elevator traction wheel elevator accessoriesP50BA2003BCS36

A20B-8200-0250Schindler Escalator Stop Switch | 315370 | Schindler Escalator Stop Switch | Schindler Escalator Accessories HA - 720 PCP1W-8ER

A20B-2101-039Small relay glass relay relay elevator relay elevator accessoriesCQM1-PA206

A20B-2003-0810Mitsubishi traction sheave Mitsubishi elevator lingyun traction sheave Mitsubishi elevator traction sheave 620 * 5 * 10EE-SX674

A16B-2203-0994 星玛门刀星玛电梯门刀LG门刀LG电梯门刀佛马特门刀电梯配件CP1W-40EDT

A06B-6130-H004Fujita calling board IN87B Fujita door board DR12C Fujita relay board IF61BE2E-X18MY1

A06B-6111-H011#H550蒂森曳引轮蒂森电梯曳引轮蒂森电梯配件曳引轮485*135*6*13H3CA-A-306

A06B-6093-H151 KONE Elevator Accessories KM 50017283 G 11K M 5017284 H 05 KONE Door Eyebrow Outcall Horizontal Display PanelE3JK-5M1

A20B-2100-0800 蒂森导靴蒂森电梯导靴HF-04蒂森靴衬蒂森电梯靴衬蒂森衬板C200H-IM212

A06B-6114-H211Otis elevator hook lock Otis hook lock Otis elevator door lock Otis 3100 door lock Otis door lockM18E3F3-R11

A06B-0115-B103H B - 720 Kangli Escalator Power Lock Kangli Escalator Key Switch Kangli Escalator Emergency Stop SwitchCJ1W-DA021

A06B-6089-H203奥的斯导靴Otis对重导靴Otis电梯导靴奥的斯靴衬Otis电梯靴衬LV8013

A06B-6050-H104 Otis handrail belt supporting pulley Otis escalator supporting pulley escalator accessories Otis escalator handrail belt supporting pulleySR91-4Y-90-1N0

A20B-3300-0600Fujita traction sheave Fujita elevator traction sheave 410 * 6 * 10 Fujita elevator accessory traction sheavep50b05020dxs50

A20B-2100-0160 Elevator bidirectional speed limiter XS12B bidirectional speed limiter OX - 240BXS240B speed limiter tensioning wheelH3CT-8H

A20B-2100-0762 Silverman Motor Silverman Variable Frequency Door Motor 3201.15.90683201.05.9259 Door MachineD4A-3101N

A16B-3200-0600 otis扶梯制动器GSD140CGM扶梯曳引机抱闸ASA00A580BROtis抱闸PV1A030EMA1P00

A20B-3900-0060 Mitsubishi Elevator Boots Lining Mitsubishi Counterweight Boots Lining Toshiba Elevator Boots Lining Hollow Rail Boots YA014 B 847G2R-14-T130

A20B-2101-0070KONE Floor Door Head KONE Elevator Floor Door Head KONE Elevator Hall Door Head KONE Stainless Steel Hall Door DeviceE3X-DA11-N

A06B-0314-B001日立梯级日立不锈钢梯级日立扶梯梯级日立扶梯配件1200EXG2R-1-SN

A320-2203-T116/01/T114Toyo Comb Plate Toshiba Escalator Comb Plate Mitsubishi Comb Plate Mitsubishi Escalator Comb Plate K 2000 049WP10030T-B

A860-0346-T111Schindler 300 p safety tongs Schindler 300 p elevator safety tongs elevator accessories Schindler safety tongsR88M-UE10030H-S1

A20B-3300-0120Otis底坑检修盒SDK-1D电梯检修开关急停开关盒电梯底坑检修盒EE-SPX402

A17B-3300-0500Elevator five-party intercom NBT 12 ( 1 - 1 ) 6A DC12V two-wire five-party intercom four-wire five-party intercomP10B1 8200BXS20

FCA E60三菱系统HR741KONE Elevator Control Box KM 853300 G 11K M 853300 G 01 KONE Elevator Control Panel B1 - 3G2R-2-SN

A20B-2100-0133Escalator direction light Escalator running direction light Escalator flow light YK - LED - 01CJ1W-DA08V

A16B-1200-0041Thyssen Gate Encoder SF - PCD - 4E - 1 Fermat Gate Encoder K200 Gate EncoderSR253-2P-N-10600100

A16B-3200-0020Otis Elevator Display Board SM - 04 - VRE XAA 25140 AP 2 JOA 6840 RH 8 Otis Elevator AccessoriesG2R-214S-V

A06B-0087-B403Otis多契带轮506多契带E510多契带江南快速多契带日立多契带H7AN-RW6DM

A20B-2900-0310Hitachi door hanging plate Hitachi elevator car door hanging plate Guang Ri elevator car door hanging plate LG elevator car door hanging plate67ZA030AMC1P01

A02B-0303-C205Power Lock Base Station Lock Elevator Power Lock 2802 Elevator Base Station Lock 2801 Elevator Electric Door Lock 2801PY2A015E

A06B-6114-H105 Schneider contactor LC1 - D 2510 contactorEE-SX672-WR小NPN带2米线

A06B-0126-B075 拼装梯级拼装铝合金梯级长江铝梯级铝合金梯级603*403*67齿NT20M-DN121-V2

A03B-0815-K202日立补偿链导向轮日立电梯补偿链导向轮日立电梯补偿链导向装置FP23-SSPN-000000F

A20B-1000-0220-05BSchindler elevator door machine frequency converter VF 1204 s, nd, s54, G8, a 11845481 door machine frequency converterH3FA-A

A20B-8100-0137Power Lock Base Station Lock Elevator Power Lock 2802 Elevator Base Station Lock 2801 Elevator Electric Door Lock 2801G3PA-220B

A06B-6079-H201Otis 506 Sidewalk Step Sidewalk Warning Bar Mitsubishi Sidewalk Warning Bar OtisTL-Q5MC1

OSE 5KN-6-12-108Xizi supporting pulley Poseidon supporting wheel Xizi handrail belt supporting wheel Poseidon handrail belt supporting wheel Xizi step wheelE6C2-AN2E

A02B-0200-B505LG Contactor GMD - 32 Contactor Elevator Contactor Elevator Accessories LG Elevator ContactorP20B10250DXA02

A06B-0085-B103 Toshiba Door Optoelectronic TNJ - F14G9207050973 Mitsubishi Elevator Door Optoelectronic YA 043 D 166 - 04S8VS-09024BP

A20B-3300-0313Elevator Fence Fence Maintenance Maintenance Fence Escalator Construction Maintenance Fence Escalator Maintenance Warning SignsRSS-25-6018S-SP

A16B-2203-0680 Toshiba door lock Toshiba elevator door lock Toshiba hook lock Toshiba elevator hook lock Toshiba elevator accessoriesCPM2C-24EDTC

CB-M3020N-P21S12

BN-H6.506P-V11S12-S

BB-H30.6P-V21P2

CN-M1815U-C25P2

CB-M3020U-P15S12

TSDA75C

CB-M3020U-P15S12

FM18-L15MP-C31P2

SK6602 艾默生CT变频器Emerson

FM18-L15MP-C31S12

BFB-M1805U-V15P2

FQ78-T2D-P31T-D

FQ50-T2D-P31P2

BN-M1204P-C21S12

BFB-M1202A-V24P2

BB-Q550.8N-C21Z8

BN-M804P-V21P2-S

BHB-M1202N-V11F3-220EXT

BN-H6.502P-V21P2

VELCONIC VLASX-035P3-AVM

BN-H6.506P-V11S12

 ETC604301-S0107

 SGMAH-70ACA-FJ11

 SGMGH-1AACA6C

 GT1155-QSBD

 SGM-04AW12

 ETP713491

 SGDS-10A01A

 SGMGH-13DCA6H-0Y

 SGMGV-20A3C61

 CIMR-E7B4045

 UTSAE-B17CL

 SGDR-SDA060A01B

CB-M1808A-C24P2
VLBSV-ZA02030-B
ETC618046-S1037
FM18-L15MP-C31S12
FM18-R3A-P24S12
616G7 18.5KW 带PG卡
BN-H6.502N-V21P2
SGML-04AF14 

SGDR-SDA140A01B
CN-M1206P-C21P2
VELCONIC东荣TOEI VLAST-006P1
SGM-A3A314
VELCONIC东荣TOEI VLASV-025P2-EX
BHN-M1808N-V11SI2-180
B67B5419J8 181
TSB07301C-2NT3-1
BB-H6.502N-V11S8-R
SGMJV-08AAA61
FQ50-L35MD-P31P2
SGMG-09A2ACB
BB-H6.501N-V21S8
MBDHT2510NA1
CM300DXD-24A
BN-H6.506N-V11S12
CIMR-J7AA20P7
VELCONIC东荣 东芝BS VLBSV-10K30 10.0kW/31.8Nm 3000/4000rpm

ISO U5-P4-F6 转差频率控制是一种直接控制转矩的控制方式，它是在V/f控制的基础上，按照知道异步电动机的实际转速对应的电源频率，并根据希望得到的转矩来调节变频器的输出频率，就可以使电动机具有对应的输出转矩。这种控制方式，在控制系统中需要安装速度传感器，有时还加有电流反馈，对频率和电流进行控制，因此，这是一种闭环控制方式，可以使变频器具有良好的稳定性，并对急速的加减速和负载变动有良好的响应特性。， 良好的接地,电机等强电控制系统的接地线必须通过接地汇流排可靠接地，微机控制板的屏蔽地，应单独接地。对于某些干扰严重的场合，建议将传感器、I/0接口屏蔽层与控制板的控制地相连。给微机控制板输入电源加装EMI滤波器、共模电感、高频磁环等，可以有效抑制传导干扰。另外，在辐射干扰严重的场合，如周围存在GSM、或者小灵通时，可以对微机控制板添加金属网状屏蔽罩进行屏蔽处理。