测量准确度

• Usin g classified method of fuzzy sets theory , a simple and practical algorithm has been developed , which is also applicale to measure an oil well " s level automatically and to improve the measurement precision
  该算法具有概念清晰、计算简单、实用性强的特点，可实现油井液面深度的自动监测,并提高测量准确度。
• There are some disadvantages in these routine methods , for example , they takes many steps and costs much time , and the accuracy of results is effected greatly by subjective factors of human inspectors
  目前对粉体粒度的测量大多采用沉降法等常规方法，存在测量时间长、测量步骤多、测量准确度受主观因素影响大等许多不利因素。
• Abstract : discusses the mechanical servo system with ball screw and linear motion guide assembly to measurement of the great wheel , and analyses the influence of the rigidity of transmission system on the accuracy
  文摘:介绍了以滚珠丝杠与滚动导轨副为主体的机械伺服系统在大型轮式零件尺寸综合测量中的应用，并分析了传动系统刚度对测量准确度的影响。
• This product is a type of professional handset infrared rays used thermometer , not need to touch with testing object , with facility - using , stability - design , exactitude - measurement , wide - measuring range . it has laser ranging , apheliotropic display , automatic numerical reading lock - in and automatic tailoff
  手持式红外线本产品是一种专业型的手持式非接触红外线测温仪，使用简易，设计坚实，测量准确度高，测温量程范围宽等特点。
• This text introduces a rotation method for the absolute testing of three optic flats , which is based on the photoelectric detecting technique , laser interference technique and image manipulation technique , it can solve the deviation on n diameters of each optic flat and enhance the accuracy
  本文介绍的基于光电探测技术、激光干涉技术、图像处理技术的带旋转三面互检法可以解出平面上n条直径线上的点的面形偏差，可以提高测量准确度。
• It is analyzed that measurement error which influences the reliable degree of measurement on the system . it is given that error formula estimated on the measuring method used in the system , and imitating estimation is achieved on this error of measurement method through computer
  同时对影响系统测量准确度的原因进行了定性和定量的分析，给出了本系统测量方法的误差估计公式，测试结果表明本系统测量误差远远小于0 . 02的予期指标。
• The particular advantages of laser sensors for distance and shape measurements are which has a simple structure , a litter volume , a light weight , a high resolving power , a large wore distance , and a high accuracy . it will not be affected by magnetic field as well and can measure on line . all these enable it to make up disadvantages of contact measurement completely
  激光传感器在测量物体距离和表面形貌的应用中,其显著的优点有:系统结构简单、体积小、非接触、重量轻、高分辨力、受环境电磁场影响小、工作距离大、测量准确度高、并可在线进行测量和它可以弥补接触式测量等许多缺陷。
• Abstract : the new method of real - time seperation of the rotary errors of axis system with three sensors synchronously in the same position , which is put forward in this paper , can seperate both of system and random errors during the measuring process and inprove the measurement accuracy several times or more
  文摘:本文提出的三测头同方位同步测量实时分离轴系回转误差的新方法，能在一次测量过程中将轴系回转误差的系统误差和随机误差一并分离，可提高测量准确度几倍至几十倍。
• Since it has the advantage of no moving components , impulse signal output , strong medium adaptability , high measurement accuracy , wide measurement range , low - pressure drop , no zero drift and easy to maintenance , it is wide accepted that the vortex type fluid oscillatory flowmeter is ideal flowmeter in the measurement of gas , liquid , steam and mix / corrosive fluid
  这类的流量计兼有无运动部件，脉冲数字输出，计量不受被测流体性质影响，测量准确度较高，量程比宽，无零点漂移，压力损失小，便于安装维护等优点，是测量气体，液体，蒸汽，混合型和腐蚀性流体的理想的流量计。
• It has many unique advantages compared with laser interferometry . and it can achieve higher accuracy and resolution than traditional geometry moir . it has been proved to be very useful in many practical applications , such as microelectronics , ultra - precision manufacturing , bioengineering , medicine , space technology , and material science , etc . in this dissertation , key technologies of nanometer displacement measurement by grating interferometry are systematically investigated , which mainly include measuring theories , designing grating interferometer and new subdividing method for moir interference fringes
  作为能够实现纳米级位移测量的技术之一,光栅干涉位移测量技术具有激光干涉仪不具备的独特优点,可以获得比几何莫尔术更高的测量准确度、更高的分辨率,在诸如微电子、超精加工、生物工程、未来医学、航天技术、材料科学等众多领域有广泛的应用前景。