查询词典 error model

These non-linear characters directly lead to the estimate error of SOCo We want to construct a more correct battery model and it's state model through that we can use some kind of mathematic algorithm to find out the value of electrochemical polarization voltage.

因此找到一个好的蓄电池模型，能够通过数学推导找到蓄电池的动态开路电压的合理值，缩小SOC的估测范围，提高蓄电池管理系统对SOC的估测精度。

In order to solve this problem, an improved algorithm is presented in the paper. Results from model data show that the method can diminish traveltime error in near surface model with great difference in slowness and describe accurately seismic sliding along the interface of the velocity layers.

提出了一种改进的地震波走时计算的逆风差分算法，通过考虑首波和散射波的走时，能有效地减小速度值差异较大的近地表地质模型的走时计算误差，准确地描述速度界面上折射波的滑行描述，特别适用于近地表层析成像及地震勘探中的静校正问题。

In this paper,a new variable structure robust model reference adaptive control scheme is proposed,which deals with a class of SISO plants under parameter and unmodelled dynamical uncertainties.It is shown that even with the existence of unmodelled dynamics,the output tracking error will converge to zero in finite time, and the SPRcondition for reference model is not required.

摘 要 讨论了含结构不确定SISO系统的变结构模型参考鲁棒自适应控制问题，提出了一种新的变结构控制方法，使得：1系统在同时含参数及结构不确定性时，跟踪误差仍能在有限时间内收敛到零；2无须假设参考模型为SPR函数。

A character-codes model based pattern recognition method by using amplitude data of targets frequency response is proposed after the establishment of high frequency response equation of radar targets. The method uses the same unvariant character-codes to express the same target of different angles and uses sequential separating of regions of target's reference variables to obtain multiple coding vectors of all regions for every target. The category and pose of target can be determined after a two-staged classification processing such as coding processing of target range profile data and errors correcting processing of coded data. The two-stage classification results are used to target identification as posterior hypothesis to be tested by sufficient convincing and necessary convincing. The character-codes model based pattern recognition method is also adaptive to variation of target angles and controllable in error probability. Time-consuming and complicated iterative computation is not necessary in the train process of pattern recognition.

首先建立了雷达目标的高频频率响应方程，这种方程将目标多散射中心理论与目标局部谐振理论有机地结合起来；进而提出了目标多频响应结构成像方法，这种方法将瑞利区频率响应或谐振区频率响应曲线的不同部位用各种不同的近似方法去逼近，通过特征谱估计方法将目标的局部频响特征与宽带距离响应特征结合起来；然后提出了一种基于姿态角变化区域的序贯划分与多模匹配的特征编码识别方法，这种方法具有能适应目标姿态角的变化以及能控制识别的差错概率α等优点，在目标识别时只需要目标在少数有限个频率激励下的幅频响应数据。

As this method calibrates all the model parameters in one procedure, and there is no need to separate the runoff, it can reduce the error caused by model parameter calibration due to intentionally separate runoff.

由于该方法同时优选所有模型参数，不需要对实测径流进行分割，从而可避免人工分割径流而出现的参数率定误差。

Compared with the numerical model, the analytical model is more propitious to studying relationship between process parameters and surface geometrical error.

通过研究这些因素，基于铣削力/铣削扭矩和瞬时未变形切屑厚度的关系，建立了一个考虑了铣削力/铣削扭矩的解析模型，用来预报在端铣情况下工件的表面几何误差。

After checking the evaluating results computed in ANN, it is found that they are similar with that in the Principal Components Method. Then the predicting model is built, which of the error is found smaller than 10%. So it is fully proved that the ANN model is feasible in the studies of quantitating the water resource integrative carrying capacity in karst area.

为了验证神经网络模型的可靠性，将神经网络模型评价的结果与主成分分析法计算的结果进行比较，两种方法的评价结果大致相同；所建预测模型经检验误差小于10%，精度较高，充分说明人工神经网络模型在喀斯特地区水资源承载力的量化研究具有较强的可行性。

This instrument not only links up model 3201 Universal Involute-checking Instrument and model GCN-2 General Surface Roughness-checking Instrument but also refits them. It uses a micro error-gauging head instead of ...

该装置是用3201型万能渐开线检查仪与GCN-2型通用表面粗糙度检查仪相连接并改装而成，用微观误差测量头代替宏观误差测量头，它具有设备投资少，测量精度高、操作方便等优点，是目前一般工厂学校均可使用的较理想装置。

Based on the 3D time-average Navier-Stokes equations, k-ε model was used to simulate the 3D turbulent flow field of whole flow passage in the Francis turbine including guide wickets, runner and draft tube. The energy performance and cavitation performance were predicted from the simulation results, and the calculated data were compared with the results of hydraulic turbine model experiment. The calculation of turbine efficiency and the measured efficiency was very closed and the maximal relative error was 0.9%.

该文基于Navier-Stokes方程和k-ε紊流模型，采用贴体坐标和交错网格系统，用SIMPLEC算法对一模型混流式水轮机引水元件、转轮和尾水管进行了联合计算与转轮单流道计算，数值模拟了水轮机各通流元件内部三维湍流流场，预测了水轮机的能量性能和空化性能，并与水轮机模型试验结果进行了对比。

In the design of the controller the model error and external disturbances are considered, and a nonlinear robust controller is developed by back-stepping method while model errors and disturbances are considered.

考虑到模型误差和外部干扰因素，采用反步法设计了非线性鲁棒控制器。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。