查询词典 error analysis

First, for state estimation problem of the linear stochastic systems with uncertainties in both the state matrix and the noise matrix, a new satisfactory estimator is constructed with stochastic theory, which can guarantee that estimator error system with bounded perturbed model parameter satisfies the constraint indexes that is given. Thus a sufficient condition of solving satisfactory estimation is obtained; secondly, the algorithm of designing satisfactory estimator is presented by analysis.

首先，根据满意控制思想，针对一类在状态矩阵及噪声矩阵中均含有不确定性的随机系统，设计一种满意估计器，使预测误差系统在模型的参数发生扰动时，依然满足预先给定的设计约束指标，得到了满意估计问题求解的充分条件；然后根据分析给出了满意估计器设计的算法。

The theoretical analysis shows that the differential of initial phase angle and the interference of harmonic wave are the two main reasons causing the error.

理论分析和数值计算表明，信号初始相角的差异和信号谐波的干扰是引起测量误差的两个主要原因。

Through analysis, we find that the fitting center is changing with coefficient of the polynomial, which causes the error.

对产生这些现象的原因进行了分析，指出拟合过程中拟合中心点随正交多项式系数的改变是导致拟合不够准确的主要原因，提出采用常规二次多项式取代正交多项式进行数据拟合，以克服正交多项式拟合方法的缺陷。

This paper analyzes the change of the primary stress in the vessel body and vessel head and the influence on the safety property of pressure vessel caused by the whole shape error based on finite element analysis. Some universal results are achieved.

本文以有限元应力计算为基础，分析了整体形状偏差所造成的筒体和封头的一次应力的变化情况及其对压力容器安全性能的影响，得出了一些具有普遍意义的结果。

Based on the description of Mohr-Coulomb and Drucker-Prager yield criteria with invariant of stress, a formula for error estimation of unit strain energy between the two stress states is established in the deviatoric plane of the principal stress space, which satisfies M-C and D-P yield criteria respectively. A general procedure to transform M-C material parameters to D-P analysis parameters is obtained.

基于应变比能的概念，在偏平面内建立了分别进入Mohr-Coulomb和Drucker-Prager屈服面时所需形状改变比能的差值公式，获得M-C材料参数向D-P计算参数等效的统一性方案。

Based on equaling the semi-rigid connecting as the reduction of member end section bending stiffness,an optimization equivalent method is put forward on the principal of minimizing the error term between stiffness matrix of fined model and one of equivalent simple model.In this dissertation,structural fatigue cumulative damage and residual life assessment of wind-induced fatigue safety prewarning system is studied.S-N curve method and fracture mechanics method for fatigue analysis are discussed.

本文建立了高耸塔架结构中广泛使用的螺栓节点板联结节点的精细有限元模型，提出了一种优化等效的方法，以刚度矩阵的误差最小为等效原则，在把节点处杆件的半刚性联接等效为杆端截面抗弯刚度下降的基础上，得到了螺栓节点联结杆件的精细有限元模型与简化有限元模型的等效关系。

The quantization error is corrected in PWM module so that it will not propagate to the output directly. The theoretical analysis is verified by simulation and circuit experiment.

通过对一个DSP控制的开关频率达100KHz的DC/DC变换器进行试验，证实其输出精度未因极限环的影响而降级。

At the same time, the effect of A/D quantizing error and modulating noise on analog-digital multiplication OCF is also analyzed theoretically, and the result of this analysis is satisfying.

同时，就D/A 有限字长、调制性噪声对模拟混合最优滤波技术的影响进行了理论分析，得到了较好的结果。

My analysis of why Miller makes the attributive error is that he has not sufficiently appreciated the quietist methodology which McDowell widely and persistently adopts in dealing with philosophical problems. This paper concludes with a suggestion of how we should not relate rule-following and cognitive externalism.

本文的主要目的除了在指出，由於米勒未能充分地体认到麦道尔在处理哲学问题时，所广泛而持续地采取维根斯坦式静默论之方法论，以至於不恰当地归给麦道尔一个他并无采取之推论外，更希望藉由揭露米勒所犯的重要错误，厘清关於规则依循与认知外在论间之关系应如何界定之问题。

The noninformative prior of the standard deviation of error terms was introduced for Bayesian analysis. Then, given the prior density of the random coefficients in the degradation path model, the Markov Chain Monte Carlo method was adopted to generate samples of joint posterior distribution of random coefficients and unknown standard deviation.

为了处理未知的误差项方差，引入相应的标准差的无信息先验分布，并进一步结合退化轨道模型中随性参数的先验分布，利用马尔可夫链蒙特卡罗方法得到随机参数及误差项标准差的联合后验分布的采样值，进而实时预测产品在未来一段时间内的可靠度。

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％。