专业英语Lesson-8-Capacitance-Inductance-Transducers-an.ppt

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,Lesson 8 Capacitance,Inductance Transducers and Some Others,Backgrounds,Text tour,Language in use,Vocabulary,Structure,Reading/writing techniques,10/26/2026,1,测控技术与仪器英语教程,Backgrounds,Terminology,transducers,传感器（把测量的物理量转换为电的参数）,measurands,被测物理量,output electrical parameter,输出电参数,sensitivity,灵敏度（校正系统获得的被测量与传感器输出信号之间的关系）,resolution,分辨率,high fidelity,高保真度（输出能真实再现被测量）,linear relationship,线性关系（输出和输入之间应该有线性关系）,10/26/2026,2,测控技术与仪器英语教程,Text tour,Outline,8.1,Capacitive transducers,8.2,Inductive transducers,8.3,Linear variable-differential transformer(l.v.d.t.),8.4,Piezo-electric transducers,8.5,Electromagnetic transducers,8.6,Thermoelectric transducers,8.7,Photoelectric cells(self-generating),8.8,Mechanical transducers and sensing elements,10/26/2026,3,测控技术与仪器英语教程,8.1 Capacitive Transducers,calculate a parallelplate capacitance,where =the permittivity of free space=,=relative permittivity of the material between the plates,A=overlapping or effective area between plates(),d=distance between plates(m),10/26/2026,4,测控技术与仪器英语教程,8.1 Capacitive Transducers,The Characteristics of capacitive transducers,Figure 8.2,Characteristics of capacitive transducers,10/26/2026,6,测控技术与仪器英语教程,8.2 Inductive Transducers,calculate inductance,where =permeability of free space,=relative permeability,N=number of turns on coil,L=length of magnetic circuit(m),A=cross-sectional area of magnetic circuit(),S=the magnetic reluctance of the inductive circuit.,10/26/2026,7,测控技术与仪器英语教程,8.2 Inductive Transducers,construction of variable-reluctance inductive transducers,Figure 8.3 construction principles of variable-reluctance inductive,transducers,10/26/2026,8,测控技术与仪器英语教程,8.3 Linear variable-differential transformer,the,construction,of,Linear variable-differential transformer,Figure 8.5 construction principles Details of an l.v.d.t.,10/26/2026,10,测控技术与仪器英语教程,8.3 Linear Variable-differential Transformer,output,characteristics,Figure 8.6 Output characteristics of an l.v.d.t.,important characteristics and features of the l.v.d.t,10/26/2026,11,测控技术与仪器英语教程,8.5 Electromagnetic Transducers,the,construction,of Electromagnetic transducers,Figure 8.8 construction principles of Electromagnetic transducers,10/26/2026,13,测控技术与仪器英语教程,8.6 Thermoelectric Transducers,the principle of thermocouple and its,application,Figure 8.9 Thermocouple circuit,The main problems of thermocouples,Advantages of thermocouples,10/26/2026,15,测控技术与仪器英语教程,8.7 Photoelectric Cells(selfgenerating),The construction of a typical cell,the characteristic of device,Figure 8.10 the construction and characteristic of photoelectric cell,10/26/2026,16,测控技术与仪器英语教程,8.8.1 Force-to-displacement Transducers,spring,cantilever,Figure 8.11 Loaded spring,Figure 8.12 Loaded Cantilever,10/26/2026,18,测控技术与仪器英语教程,8.8.2 Pressure-to-displacement Transducer,Diaphragms,the relationship between,deflection,and pressure,differential,is,bourdon tubes,mainly used in pressure gauges,the relationship between the,input pressure P and the tube-tip deflection is,10/26/2026,19,测控技术与仪器英语教程,8.8.2 Pressure-to-displacement Transducer,Bellows,Bellows is general used in pneumatic instruments,.,Figure 8.13 The construction of bellows,10/26/2026,20,测控技术与仪器英语教程,8.8.3 Displacement-to-pressure Transducers,A typical arrangement of a flapper-nozzle system,Construction principle characteristic with constant supply pressure,Figure 8.14 Flapper-nozzle system,10/26/2026,21,测控技术与仪器英语教程,Language in use,Vocabulary,Coupling,Differentiate,Flux,Impedance，Permittivity,Structure,Reading/writing,techniques,10/26/2026,22,测控技术与仪器英语教程,coupling,in text,electromagnetic coupling,电磁耦合,10/26/2026,24,测控技术与仪器英语教程,coupling,in use,clutch coupling 离合器，离合联轴节,collector coupling 集电极耦合,common impedance coupling 【电磁】共阻抗耦合,complex coupling 复耦合，(电)感（电）容联合耦合,condenser coupling 电容 器耦合,conductive coupling 电导耦合,alternating-current coupling 交流耦合,back coupling 反馈偶合,base coupling 基极耦合,light coupling 光耦合器,resonant coupling 谐振耦合,10/26/2026,25,测控技术与仪器英语教程,differentiate,in dictionary,区分,区别,辨别,【数】求.的微分,使分化;使变异,10/26/2026,26,测控技术与仪器英语教程,flux,in dictionary,流,流出;流动,涨潮,不断的变动;变迁,熔解,熔融;助熔剂;焊剂,【物】流量;通量;电通量;磁通量,【医】(血液,体液的)异常溢出;腹泻,10/26/2026,28,测控技术与仪器英语教程,flux,in text,Flux direction 磁通方向,Flux density 磁通密度,Flux change rate 磁通变换率,10/26/2026,29,测控技术与仪器英语教程,Impedance,in dictionary,电阻抗,全电阻,物阻抗,10/26/2026,31,测控技术与仪器英语教程,Impedance,in text,This can be overcome by using measuring amplifiers,with very high input impedances,这可用带有被称为充电放大器的高输入阻抗的测量,放大器来克服此缺陷,10/26/2026,32,测控技术与仪器英语教程,Impedance,in use,conjugate impedance共轭阻抗,controllable impedance可调电感,coupled impedance耦合阻抗,current limiting impedance限流阻抗,cyclic impedance相序阻抗,capacitive impedance电容性阻抗,容抗,dissymmetrical impedance不对称阻抗,inductive impedance电感性阻抗,zero-phase sequence impedance零相序阻抗,positive-phase sequence impedance正相序阻抗,10/26/2026,33,测控技术与仪器英语教程,permittivity,in dictionary,【电】电容率,介电常数,complex dielectric permittivity,复电容率,复介电常数,differential permittivity,微分介质常数,动介电系数,10/26/2026,34,测控技术与仪器英语教程,permittivity,in text,The permittivity of free space,空气介电常数,Relative permittivity,相对介电常数,10/26/2026,35,测控技术与仪器英语教程,Structure,10/26/2026,36,测控技术与仪器英语教程,Reading/writing,techniques,10/26/2026,37,测控技术与仪器英语教程,