查询词典 error

It is analyzed by means of computer simulation that the contact-track shape and related factors, the influence of installing angle error and interpolation error to machining precision, and some important conclusion is drawn, all of which sets a foundation to improve the precision of helical surface machining.

论文以计算机仿真为手段，详细分析了截面包络法加工螺旋面时工件与刀具上的接触迹形状及影响因素；分析了安装误差及插补误差对工件加工精度的影响，并得出相关结论，为提高螺旋面的加工精度奠定了基础。

The results show that the inverse calculation errors are remarkable, and the relative error of emissivity parameter is larger than the relative error of temperature.

结果表明，发射率参数的计算相对误差要远远大于温度的相对误差。

The invention discloses a DC/DC circuit, comprising a PWM controller, a current amplifier, a peak current comparator, an error amplifier, a main switch, a synchronous switch and also an operational amplifier. The non inverting input end of the operational amplifier is used for coupling with input voltage or voltage reference, or used for coupling with the input voltage and the voltage reference; the inverting input end of the operational amplifier is used for coupling with the voltage reference or ground, and the output end thereof is connected with the non inverting input end of the error amplifier.

本发明公开了一种DC/DC电路，包括PWM控制器、电流放大器、峰值电流比较器、误差放大器、主开关和同步开关；还增设运算放大器，其同相输入端用于与输入电压或基准电压耦合，或用于同时与输入电压和基准电压耦合；其反相输入端用于与基准电压或地耦合，其输出端与所述误差放大器的同相输入端连接。

The gear double-faced joggle instrument is the special system to measure the errors of the radial resultant error for one gear and the radial resultant error for one tooth of a gear.

齿轮双面啮合检查仪是检测齿轮径向综合误差ΔF"和齿轮一齿径向综合误差Δf"i的传统仪器。

The method how to separate the radial jumpiness of the large shaft by three-point method to gain the round error in high precision is showed particularly. In the part of diameter measurement, this paper indicates how to standardize the photomicrosensor and shows the way how to use correction signal correct the measure error of the grating system which is used to measure the rotated angle of the wheel in detail.

文中详细论述了在圆度误差测量中，利用三点法分离大轴支承径向跳动引起的测量误差而获得高精度的圆度误差测量值的方法以及直径测量系统中，光电开关测量精度的标定方法和通过构建误差修正函数对实现滚轮转角测量的圆光栅系统的测量误差进行实时修正的方法。

Aimed at the characteristic of multiple types of faults possibly happened in nuclear power plant, large scale of training sample, and requirement of quick and accurate diagnosing, after the analysis of large sample number generated by large fault type exceeds limitation of 64K paragraph in DOS and large number of local minmum in error surface, measurements of same format of data file, Win95/NT operating system platform, resetting weight learning rate, dynamic training set in quick learning algorithm and improvement on quick learning algorithm using homotopy method which can avoid local minmum points in error surface have been adopted to ensure quickly and effective process of the course of neural network's training and testing.

针对核动力装置可能发生的故障种类多，训练样本规模大，故障诊断需要快速准确的特点等，分析了样本多和故障种类多产生的训练样本量超出DOS段大小和网络误差曲面上局部极小值多的情况，采取了使用相同格式数据文件、Win95/NT操作系统平台，对快速学习算法采用重置神经网络权值学习率和动态训练集、并采用能够有效克服网络误差曲面上局部极小点的同伦方法对学习算法进行改进等措施保证神经网络训练测试过程的快速、有效地进行；针对装置发生的故障须快速、准确诊断的需要，分析了故障的产生对装置参数变化的影响及操纵员对故障诊断的基础，在核动力装置发生故障时参数曲线的变化量与正常运行时参数曲线的变化量存在明显差异的基础上，提出采用参数曲线的变化量作为神经网络的输入，并围绕参数变化量的方法采用二次曲线拟合滤波求变化量和阈值技术来保证神经网络得到精确的装置参数变化量，从而得到准确的诊断结果。

The basic idea Is: using the standard value inserting the dynamic measuring errors which involve systematical errors and random errors, constructing the original error model which is revised at the same time and follows the variable law of the dynamic measuring errors, establishing a more suitable error model.

基本思想是：利用标准量插入动态测量数据实时分离含有系统误差和随机误差的动态测量误差值，建立误差的初始数学模型，并根据不断获得的标准点处的测量误差，实时修正或校正所建的初始误差模型，使误差模型不断跟踪动态测量误差的变化规律，建立更加符合动态测量过程的误差模型。

The theoretical analysis and experimental results show that the result of the first one has bug error with optimal results, and the second one is superior to the former, and the third one is best, which can get the optimal result based on least upper bound of error probability.

证实了"基于最小错误概率上界特征提取"是目前可以用迭代算法完成的最好的特征提取，而"基于马氏距离特征提取"在错误概率上界上升很小的代价下，简化了计算量，也是一种可行的方法。

The limit on increment of probable error of muzzle velocity has been derived on the basis of that the increment will increase probable error of range and decrease probablity hitting the mark.

基于对初速或然误差增大所引起的射程或然误差增大和命中概率降低的限制，导出了对库存弹药初速或然误差增大的限制。

And the error limit of flux sensor under 5%, the error limit of intelligent Heat Meter up to grade 2 according to the precision criterion of heat meters.

基于MSP430单片机的智能热量表满足《中华人民共和国城镇建设行业标准CJ128-2000热量表》的标准要求，电源采用内装3.6V锂电池，使用寿命超过八年；流量传感器误差限不超过5％，总体热量表精度达到2级精度标准。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。