The author puts forward a method which can measure the varying pitch errors by a universal tool microscope and estimate the measuring errors less than 15pm precisely.
本文作者探索在万能工具显微镜上用间接测量方法测量变螺距误差并进行精度估算。
It is the difference between theoretical normal pitch and its actual measured value. The major element to influence the pitch errors is the runout of gear flank groove.
推测的法向周节与实际测量值不同。影响周节错误的最主要因素是齿轮侧面有凹槽。
This can be detected via lie detectors, speech errors and hesitations, repetitions, fidgeting and displacement activity, blinking, higher vocal pitch and pupil dilation.
这可通过测谎器、言辞错误和犹豫不决、反复、烦躁和取代动作，眨眼，提高音调和瞳孔放大发现。
The errors of the stand-off measurement and measurement errors made by pitch diameter gauge and ovality gauge are analyzed and compared.
分析比较了紧密距测量以及中径和椭圆度量规测量的误差。
This paper studied the extraction of the pitch and yaw angular errors of the line-of-sight to seeker-axis under the function of MMW step frequency target identification.
本文研究毫米波频率步进目标辨识功能下获取弹目线相对于导引头轴的俯仰及偏航角误差的实现方法。
The stability and small dynamic errors could be confirmed by using the method of composite control in which the pitch angular rate of barbette sensed by INS was feed back and compensated in advance.
用复合控制把惯导系统测量的炮塔俯仰转动角速度（扰动角速度）反馈到控制前端，进行预先补偿，可保证小的瞬态误差和系统的稳定性。
A method and system based on compensation for beam drift are put forward in order to measure pitch and yaw errors.
提出了一种带有光线漂移补偿的测量导轨俯仰角误差、偏摆角误差的方法及系统。
The lin ear positioning errors are compensated by the compensation of the thread pitch a nd thread clearance in the machine tools.
通过补偿机床螺距和丝杠间隙误差，实现了机床线性定位误差的补偿。
The effects on straightness measurement are analyzed for the cube-corner retroreflector with angle errors, surface errors, yaw, pitch and roll.
分析了角锥棱镜的制造角差、面形误差和测量过程中角锥棱镜的偏摆、俯仰、滚转对直线度测量的影响。
High frequency noise of gears is mainly from tooth error and base pitch, and low frequency noise from accumulated errors of tooth spacing.
齿轮高频噪声产生的主要原因是齿形误差和基节偏差；低频噪声产生的主要原因是齿距积累误差。
Smoothing algorithm is exploited to remove the errors of multiple frequency point, half frequency point and random point, and realize pitch curve smoothing.
使用平滑算法消除倍频点、半频点和随机点产生的误差，实现基音曲线平滑。
Finally, individual errors in pitch track are corrected by a smoothing method, in which a searching and tentative method together with a judge mechanism of adding or eliminating pitch period is used.
最后，采用搜索试探的平滑算法，并加入一个增加或者消除周期的判断机制，对基音轨迹曲线中出现的个别错误进行纠正。
Tests show, the modified restoration scheme can reduce the pitch error due to channel errors at least 10% on channels with bit-error-rates above 1%.
实验结果表明：在1%以上的随机误码率下，采用本文提出的纠错 算法后，信道误码引起的声码器基音参数误差能够降低10%以上。
Tests show, the modified restoration scheme can reduce the pitch error due to channel errors at least 10% on channels with bit-error-rates above 1%.
实验结果表明：在1%以上的随机误码率下，采用本文提出的纠错 算法后，信道误码引起的声码器基音参数误差能够降低10%以上。
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