模型误差 meaning in English
model error
Examples
- We get the sensitivity matrix using the model that contains model error in the following two cases . if the identification data are got using the model without model error before and after the damage , the error resulted from model error can be overlooked . if the data are got using model with model error before the damage and using the model without model error after the damage , error results from model error is first order and model error can bring more assessment errors
2 、本文详细分析了模型误差对损伤识别结果的影响，经过公式推导及实例分析说明，损伤灵敏度矩阵用有模型误差的理论分析模型来建立，如果损伤前后都用无模型误差的实测数据来识别，此时误差为二阶微量可以忽略；如果损伤前采用有模型误差的数据而损伤后采用无模型误差的实测数据，此时误差为一阶量，可能引起较大的识别误差。 - The problem of doa ' s estimation of multiple source signals incident on a arbitrary array in the presence of both unknown spatially correlated noise and sensor errors is firstly considered . a modified ml estimation of doa ' s and sensor gain errors is presented . unlike previous work , the proposed method does not impose any structure constraints or parameterization of the signal and noise covariances . the algorithm can be carried out via the alternating projection approach . finally , the performance of the proposed method is shown with computer simulations as well as real array data
在空间相关色噪声环境及存在阵列模型误差情况下，首先给出了基于最大似然的doa及阵列幅相误差联合估计算法，该算法对信号和噪声无任何约束，且适用于任意阵列结构。算法可以利用交替投影迭代搜索实现，计算机仿真实验和外场实测数据表明，本章算法能给出比传统的最大似然方法更高的估计性能。 - According to the installation of the camera on the hebut - i mobile robot , analyzing the stereo vision model of lateral camera in detail in this thesis . at the same time , common visible region and the model error of this model are studied deeply , further more , the error produced by the error of the correspondence is analyzed in detail
并按照hebut -型移动机器人视觉系统中摄像机的配置关系，详细分析了摄像机横向配置的立体视觉模型，对该模型的共同可视范围、模型误差进行了深入的研究，同时对由于摄像机的配准误差而产生的误差进行了分析。 - The research on autonomous navigation and orbital keeping technology of geosynchronous satellites : selecting position vector in the inertia space and longitude , latitude , radial errors in the hill equation as state variables , the precision of orbit determination caused by track dynamic model error , sampling period , and sensor measurement and install error is analyzed
同步卫星自主导航与轨道保持技术研究：分别选取惯性空间位置矢量和采用hill方程表示的经、纬、向径误差作为状态量，分析轨道动力学模型误差、采样周期以及敏感器测量、安装等误差对定轨精度的影响。 - As the steel structural model error mainly relied on the control to the member bar ' s link stiff and its physical dimension , this paper take the roof structure of shenzhen citizen center as subject , through its fixity factor , to select the joint link stiff as the damage indicator . the fem correction of truss structure based neural network can be established with the change of the structural modal and the joint link stiff , thus the fem for the roof structure of shenzhen citizen center are corrected by the theoretical modal analysis
由于钢结构的模型误差主要体现对杆件连接刚度而非对杆件的物理尺寸的把握上，故本文以深圳市民中心屋顶网架结构为对象，针对其节点固结系数，选择节点连接刚度为损伤标识量，通过研究结构模态变化与节点连接刚度变化的关系，建立了有限元模型修正的神经网络模型，通过理论模态分析对深圳市民中心屋顶网架结构的有限元模型进行了修正。