查询词典 error model

Choosing output error of Accelerometers and angle error of attitude as observation respectively and system observation model is derived, which is based on analyzing Kalman filter theory. Simulation show that the results are true and validated.

本文对捷联惯导系统动基座初始对准进行了研究，对卡尔曼滤波技术在动基座初始对准中的研究与应用具有一定的参考意义。

Comparing with the observation results, the biggest average error of four observation well is 0.14 m in the simulation, the positive and negative error is relatively equal, and the stability of system is better, which means the simulation model accords with the reality of the studying region.

模拟结果与观测结果比较，4个观测孔的平均水位误差最大值为0.14m，正负误差比较均衡，系统稳定性较好，表明所构建的数学模型与研究区域实际情况吻合较好。

To generate digital elevation model for gross error check, to check out the corresponding gross error.

对生成的数字高程模型进行粗差检查，能够检查出相应粗差。

There is much error in flood forecasting process due to the limited model and the inadequate real-time information, however, it is an effective method based on the hydrograph interactive technology to reduce the forecasting error.

由于预报模型的局限性和实时信息的不完善，洪水预报过程存在许多误差，而基于图形交互式修正技术是消除预报误差的有效手段。

When the size of initial error is close to that of model parameter error, they both contribute to the predictability limit of Lorenz system.

在后两种情况下，在考虑初始误差对可预报性影响的同时还必须考虑参数误差的作用。

This approach is a combination of signal analysis and mathematical model .By the denoising function of wavelet and the learning itself function of neural network , the input and output nonlinear dynamic characteristic of system is obtained . The output prediction error, generated from the real output and wavelet neural networks estimated output, is used as a residual error to execute logical judge. and this approach can improve the speed and accuracy rate of fault detection.

它是一种把信号分析和数学模型相结合的故障检测方法，通过小波对信号的去噪和神经网络的自学习功能，来获取系统输入输出的非线性动力学特性，进而实时计算出残差并进行逻辑判决，可提高故障检测的速度和准确率。

An evaluating algorithm of maximum inscribed circle for roundness error in the Cartesian coordinates and a measurement model of roundness error is introduced in this paper.

介绍了一种在直角坐标系下利用最大内接圆法评价圆度误差的方法，建立了圆度测量模型。

Fourthly, taking three groups of water quality data of Jinhe River as original data, prediction to water quality of the river was made. Compared with real monitored value, the error of predicted value of all of simulating terms, including dissolved oxygen, bio-chemical oxygen demand, chlorophyll a, organic nitrogen, ammonia nitrogen, nitrite nitrogen, nitrate nitrogen, organic phosphorus, dissolved phosphorus and temperature, were basically within error limit of 20%, which validated the validity of the model.

第四，以津河三组水质数据为原始数据，通过建立的模型对津河水质进行预测，水质变量溶解氧、BOD、叶绿素、有机氮、氨氮、亚硝酸盐氮、硝酸盐氮、有机磷、溶解性磷和温度的预测值与实际监测值均在所设定的误差范围20%之内，验证了模型的有效性。

The factors that influence contour accuracy of the machine are analyzed. The equation ofcontour error due to feeding axis's dynamics is derived by circular contour motion of themachine, and a model of contour error is proposed.

五、研究了引起轮廓误差的各种因素，以圆弧轮廓为例推导了联动坐标轴动态特性对轮廓误差的影响公式，提出了轮廓误差模型。

Based on the measurement sample stationarity in limited distance,the prediction model's limited astringency and mensurability to the dynamic measuring error and the prediction error respectively are proven.

首次研制成功了高精度任意二面角与圆分度测量系统，并编制了基于MS Windows的测量和系统控制软件。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失