机械测试技术英语词汇

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1、机械工程测试技术词汇注释第一章periodicsignal周期信号transientsignal瞬态信号non-periodic/aperiodicsignal非周期信号quasiperiodicsignal進周期信号stationaryrandomsigna稳态随机信号analogsignal模拟信号digitalsignal数字信号sampledsignal取样信号energysignal能量信号powersignal功率信号timedomain时域frequencydomain频域amplitude幅值spectru

2、m频谱amplitudespectrum幅频谱phasespectrum相频谱coefficient系数Fouriercoefficient傅里叶系数Fourierseries傅里叶级数constant常量integrable可积的angular/circularfrequency圆角频率oddfunction奇函数evenfunction偶函数fundamentalfrequency基频harmonic谐波module模Fouriertransform傅里叶变换Fouriertransformpair傅里叶变换对rect

3、angularfunction矩形窗函数exponential指数positive正数negative负数partialfraction部分分式symmetry/duality对称性scalingproperty时间尺度改变特性decay衰减convolution卷积set集合randomprocess随机过程probabilitydensityfunction概率密度函数ergodic各态历经timeshifting时移frequencyshift频移probability概率denote扌旨示abscissa横坐标or

4、dinate纵坐标duration持续时间sinusoidalj£弓玄的origin原点differentiate求微分arbitraiy任意的coordinate坐标normaldistribution正态分布Poissondistribution泊松分布standarddeviation标准差correlationfunction相关函数密度函数autocorrelationfunction自相关函数powerspectraldensityfunction功率谱密度函数cross-correlationfunction

5、互相关函数meanvalue均值variance方差covariance协方差meansquarevalue均方值unitimpulsefunction单位脉冲函数linear线性的mathematicalexpectation数学期望第二章staticperformance静态特性dynamicperformance动态特性excitation激励accuracylinearity准确度线性度nonlinearity非线性度range量程span范围precision精密度sensitivity灵敏度resolution

6、分辨率hysteresis冋程误差最大偏置量full-scaledeflectiondrift漂移gain增益lineartimeinvariant(lti)线性时变系统offset偏移transferfunction传递函数frequencyresponsefunction频率响应函数frequencypreservationproperty频率保持特性superpositionproperty线性亮加性proportionality比例特性differentiation微分特性integration积分特性amplit

7、ude-frequencycharacteristic幅频特性phase-frequencycharacteristic相频特性weightingfunction权函数parallelcombination并联环节组合seriescombination串联环节组合first-ordersystem一阶系统second-ordersystem二阶系统timeconstant时间常数stepinput阶跃信号dampingratio阻尼比undampednaturalfrequency无阻尼固冇频率criticallydamp

8、ed临界阻尼overdamped过阻尼overshoot超调量non-distortionalmeasuringsystem不失真测量loadingeffects负载效应%一第二早transducers传感器sensingelements敏感元件operatingprinciples工作原理resist