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synthesis errors
相关语句
  综合误差
     The synthesis errors in the electric power measuring equipment include these of the ammeter, the transformer and these caused by the secondary circuit voltage drop of the transformer.
     电能计量装置的综合误差包括电能表的误差、互感器的合成误差及电压互感器(PT)二次回路压降(简称PT二次压降)引起的误差。
短句来源
     Finally, a simulation of machining accuracy prediction is given to validate the proposed accuracy prediction system based on the measuring and identifying of the synthesis errors which contain geometry errors,the heat deformation errors and force deformation errors of a CNC machine tool.
     最后,为了验证开发的精度预测系统的有效性,在对包括几何误差、热变形误差和力变形误差在内的机床综合误差进行检测和辨识的基础上,进行了加工精度预测仿真.
短句来源
  相似匹配句对
     Synthesis of p
     对氯苯甲醛的合成
短句来源
     d. errors.
     d误差。
短句来源
     errors.
     d. 随机误差。
短句来源
     ANALYSIS AND SYNTHESIS OF ERRORS IN HARMONIC DRIVE
     谐波齿轮传动系统的各误差分量及其综合
短句来源
     Analysis and Synthesis of Robot Pose Errors
     机器人位姿误差的分析与综合
短句来源
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A synthesis error occured in one of the cloned synthetic gene coding for human neutrophil activating protein-l/interleukin-8 was revised by inserting a single G residue in position 201 of the gene via oligonucleotid-mediated site-directed muta-genesis.The resulting gene was characterized by digestion with restriction enzymes and the mutation was confirmed by DNA sequencing of the complete coding region.The revised gene was then expressed efficiently in E.coli with a vector pBV220 under the control of bacteriophage...

A synthesis error occured in one of the cloned synthetic gene coding for human neutrophil activating protein-l/interleukin-8 was revised by inserting a single G residue in position 201 of the gene via oligonucleotid-mediated site-directed muta-genesis.The resulting gene was characterized by digestion with restriction enzymes and the mutation was confirmed by DNA sequencing of the complete coding region.The revised gene was then expressed efficiently in E.coli with a vector pBV220 under the control of bacteriophage **********A PRPL tandem promoters.The neutrophil chemo-tactic activity of the recombinant product was assayed using the agarose plate method.The general strategies used in the experiment were also discussed.

本文采用寡核苷酸介导的定位诱变技术修正了人嗜中性白细胞活化蛋白-1/白细胞介素-8合成基因中出现的合成错误,在该基因编码区的201位插入了原来缺失的G残基,从而使之恢复正确读框。经对修正基因进行DNA全序列测定,表明定位诱变的结果符合设计要求。在此基础上,利用原核高效表达载体pBV220在P_RP_L串联启动子的控制下在大肠杆菌中对该基因进行了表达,并测定了重组人嗜中性白细胞活化蛋白-1/白细胞介素-8的嗜中性白细胞趋化活性。本工作为开展人嗜中性白细胞活化蛋白-1/白细胞介素-8基因工程及蛋白质工程的研究奠定了基础。

A real time error compensation system has been developed to improve the geometric thermal accuracy of a NC twin spindle lathe by using sensing, metrology, modeling, and computer control techniques. The synthesis error models are proposed to combine in a single expression both the geometric and thermal errors of the machine by a homogeneous coordinate transformation method. Different types of models are proposed for different kinds of the thermal error components. Separation of the...

A real time error compensation system has been developed to improve the geometric thermal accuracy of a NC twin spindle lathe by using sensing, metrology, modeling, and computer control techniques. The synthesis error models are proposed to combine in a single expression both the geometric and thermal errors of the machine by a homogeneous coordinate transformation method. Different types of models are proposed for different kinds of the thermal error components. Separation of the geometric and thermal errors if done by estimating variation of the slopes of the error profiles. The compensation cutting tests show that the size variations of the workpieces could be reduced from 60 μm to 14 μm, and the taper from 50 μm/cm to 15 μm/cm.

以某厂一台数控双主轴车床为研究对象,根据齐次坐标转换原理,给出了该机床的几何误差和热误差的综合数学模型.对于不同的热误差因子,给出了不同的热误差数学模型,通过计算机分析合成误差曲线的斜率,分离了热误差和几何误差.补偿系统主要由微机结合机床控制器构成.由机床的温度信号和工作台运动位置信号结合综合误差数学模型,通过微机算出补偿值并送入机床控制器对刀架进行附加进给运动完成实时补偿.补偿试验表明,工件之间的尺寸变化可从原来的60μm以上降到14μm;工件的锥度变化从50μm/cm以上降到15μm/cm,大幅度提高了机床的加工精度,满足了工厂的实际生产需要.

The principle of a CCD sensor used for on-line measurement of workpieces produced by high speed hot forming was presented in this paper.And a new compensation method of the synthesis error of on-line measurement of the CCD sensor signal was given in detail by test demonstration and theoretic analysis of the major factors which resulted in the errors.Through this new method,the difficulties in direct on-line measurement of some errors were overcame by means of the on-line estimated value of...

The principle of a CCD sensor used for on-line measurement of workpieces produced by high speed hot forming was presented in this paper.And a new compensation method of the synthesis error of on-line measurement of the CCD sensor signal was given in detail by test demonstration and theoretic analysis of the major factors which resulted in the errors.Through this new method,the difficulties in direct on-line measurement of some errors were overcame by means of the on-line estimated value of correlative parameters which were easy to determine,and the compensation amount of the corresponding error was given simultaneously.Its application to the testing site of hot forming shown that the measurement precision of this new method is satisfactory to the request of factory.

本文介绍了CCD传感器对快速热成型工件的外径在线检测原理。通过误差因素的实验考证和理论分析 ,给出一种适用的CCD信号的综合误差补偿方法。该方法避开了难以检测的误差因素 ,借助易测的相关参量的在线估值 ,适时给出误差补偿量。该系统用于热工现场 ,测控精度满足工艺要求。

 
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