计算误差

Based on the Lyapunov equations, the formulas of computing local predicting error variances and covariances are given, which are applied to compute optimal weights.

其中提出了基于Lyapunov方程的局部预报估值误差方差阵和协方差阵计算公式。

The nonlinear transformations called the unscented transformation is applied to propagate the means and covariances of states, and the errors caused by linearization of extended Kalman filter is eliminated.

UKF采用确定性采样策略，通过UT变换实现状态均值和方差的非线性传播，避免了扩展卡尔曼滤波产生的线性化误差，并且无需计算雅可比矩阵。

After deconvolution analysis, the exact mass of insulin in different samples could be obtained.

经去卷积计算可得胰岛素的精确分子量，与理论值的相对误差可至1.72×10^(-7)以下。

With comparing the reference values of the sensor-level, the Averaged Root Mean Square Error of position, velocity, and acceleration were found about 77.08%, 60.10%, and 32.31% improved. Also, the performance indexes of position, velocity, and acceleration with the local-processor were found to be larger (about 47.91%, 30.33%, and 12.71%) than with the global-processor, respectively.

经蒙地卡罗电脑模拟结果，验证所采用的联邦α-β-γ滤波器，可减少计算量的负荷，提升滤波器的运算速度，且在全域处理器中使用之资讯融合演算法，无论在位置、速度及加速度之估算误差收歛上，均有优异的性能，相较於感测器层平均效能分别提升了约77.08%、60.10%及32.31%；相较於区域处理器层平均效能分别提升了约47.91%、30.33%及12.71%，验证本研究所提出之资讯融合演算法，可明显改善追踪精确度。

On the basis of analysing a dispersion error of target and torpedo,considering the rule of the acquisition range of homing system varying with the relative bearing,this article sets up a new method which can calculate the multi-continuous acquisition probability of homing torpedo.

本文在分析目标和鱼雷误差散布的基础上，结合自导作用距离随舷角变化的规律，建立了一套计算主动自导鱼雷多次连续捕获概率的统计求解法。

The content of magnesium oxide obtain by QCS should be within +5% tolerance range of the calculated value.

从QCS测得的氧化镁含量，应当在计算值+5％的误差范围内。

And has done the tired life test of the hypoid gear. As the samples of the test data of gear life test is very few, the author has made the error model of tes tinghypotheses when using k-s method, the auther presented a testing hypotheses method which can make use of the information of the samples and reduce the error of probability Calculation. It is Called"the improved K-s method". The author has used this method to deal witch the life test datas and the result is identical with the result of the theoretical calculation.

为对锥齿轮进行疲劳寿命试验，结合其它科研项目，研制了多功能数控齿轮传动试验台，并在该试验台上以SC110锥齿轮为试件进行了疲劳寿命试验，针对齿轮寿命试验数据一般样本很少的情况，建立了用K—S法进行分布律假设检验的误差模型，并提出了一种能充分利用样本信息，大大提高检验精度的小样本分布假设检验的新方法——改进的K—S法，并用该法对寿命试验数据进行了处理，得到了与理论分析计算一致的结论。

This paper analyses and proves that the restoring saturation coefficient α of one dimension extra-saturation sediment discharge method and the modified coefficient K of the quasi-hydrostatic settlement method are reciprocals each other.

分析论证了一维超饱和输沙法恢复饱和系数α与准静水沉降法修正系数K互为倒数；在分析影响α值变化主要因素的基础上，建立了计算恢复饱和系数α的数学模型；通过误差验证分析和经过几年生产设计部门的使用情况证明，模型的研究思路正确，精度、可靠度均满足设计要求，可供生产设计单位使用。

This paper analyses and proves that the restoring saturation coefficient a of one dimension extra-saturation sediment discharge method and the modified coefficient K of the quasi-hydrostatic settlement method are reciprocals each other.

分析论证了一维超饱和输沙法恢复饱和系数 a与准静水沉降法修正系数K互为倒数；在分析影响a值变化主要因素的基础上，建立了计算恢复饱和系数 a的数学模型；通过误差验证分析和经过几年生产设计部门的使用情况证明，模型的研究思路正确，精度、可靠度均满足设计要求，可供生产设计单位使用。

A new group of kinetic parameters were obtained through multiple nonlinear regressions with industrial data.

使用回归得到的动力学参数进行稳态模拟，结果显示：苯甲酸质量分数的计算值与测量值的相对误差在5%以内。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。