累积误差

针对传统基于内容的纹理图像检索方法中抽取固定特征和相似性度量存在累积误差的不足，提出一种新的基于学习的Log-gabor子空间特征优化的旋转不变纹理图像检索方法。

In order to overcome the defects of general image retrieval that using same texture feature vector and existing accumulative error in similarity measure , a novel Rotation Invariant Texture Retrieval Method Based on Learning Log-Gabor Subspace Feature Optimization was proposed .

同时也校正了光栅的累积误差。

And the accumulative error is corrected meanwhile .

BP神经网络的累积误差方案及算法

Accumulated error project and its algorithm on BP neural network

通过累积误差的改进BP算法实现了数学的一种运算，通过实际算例结果的对比，证明了改进算法的有效性和进步性。

By improved back-propagation algorithm and comparing practical calculation results , proves the validity and progressiveness of improved algorithm .

基于VB的数据处理系统处理齿距偏差和齿距累积误差

Developing the Data Processing System Based on VB Tooth Pitch Deviation and Tooth Pitch Accumulated Error

跟踪控制器采用增量PID控制来减小累积误差的影响，且便于DSP的实现。

Incremental PID controller is applied as tracking controller in order to decrease influence of accumulated errors and to realize conveniently on DSP .

GPS/MIMU组合导航仿真结果表明，经过MIMU信号预处理的组合系统，在GPS信号有效时定位误差减小了20%，而当GPS信号丢失时，累积误差降低了近80%。

Simulation results show that the performance of integrated GPS / MIMU system has been improved by 20 % when GPS is available and 80 % while GPS blockages after pre-processing for MIMU signal .

系统误差值满足一定条件后对SINS进行校正，这样可以消除SINS累积误差，大大提高系统各项性能指标。

When system error value satisfies certain condition , the error value can rectify SINS . This method not only eliminates the accumulated error of SINS , but also greatly improves the accuracy of system .

第二代CCD星跟踪器作为飞行器姿态测量仪器，因其指向精度高、无姿态累积误差、快速的故障恢复能力和智能化而受到人们的青睐。

Using the second generation of CCD star tracker as the spacecraft attitude measuring instrument is found favor in somebody ′ s eyes for its high pointing accuracy , without attitude accumulated error , fast fault recovery capability and intelligence .

针对机器人长距离运行时里程计定位存在累积误差问题，提出一种基于里程计和PTZ视觉的移动机器人自定位算法。

To reduce the influence of cumulative odometer localization error , an autonomous localization approach for mobile robot based on odometer and Pan-Tilt-Zoom ( PTZ ) vision was presented .

D-H方法虽然有累积误差的缺点，但是运算简便、直观易懂，而且能够满足大多数的精度要求。

Despite of its disadvantage of error accumulation , D-H method can easily meet most accuracy requirment , and it is easy to caculate and easy to understand .

根据齿轮齿距偏差和齿距累积误差的计算方法和图解原理，利用VB程序实现数据自动处理，求得齿轮齿距偏差和齿距累积误差；

According to gear tooth pitch deviation and tooth pitch accumulated error computational method and graphic solution principle , using the VB procedure to realize automatic reduction data , the gear tooth pitch deviation and the tooth pitch accumulated error are obtained .

分析减少DDA圆弧插补径向误差与消除累积误差的有关参数，以进一步提高DDA圆弧插补精度。

In addition , the author analyzes the relevant parameters used to reduce the diameter error and to eliminate cumulative error in DDA arc interpolation so as to improve the precision of DDA arc interpolation .

并在此基础上设计了卡尔曼滤波器用来修正捷联导航的累积误差。然后按着组合导航系统对硬件性能等要求，设计了采用双DSP为核心，双端口RAM为共享存储器通信的硬件方案。

And on this basis , Kalman filter that amend SINS navigation error accumulation has been designed . Thirdly , based on integrated navigation system on hardware requirements , this paper designs the hardware program that uses two DSP as MCU and dual-port RAM memory as shared communicating memory .

现有的基于CMAC的自学习控制器能够有效地减小跟踪误差，但是在跟踪连续变化信号如正弦波时，由于累积误差的影响会产生过学习现象，进而导致系统的不稳定。

The conventional learning controller based on CMAC neural network can effectively reduce tracking error , but can also destabilize a control system which is otherwise stable due to the influence of accumulative errors when tracking continuous variable signals such as sinusoidal wave .

齿距累积误差测量中的异常现象分析

Analysis of Abnormal Phenomenon in Cumulative Error Measurement of Tooth Distance

介绍前向神经网络的累积误差算法。

Introduces the accumulated error algorithm of forward neural network .

为了避免积分累积误差，引入违约修正来校正位移和速度。

A position and velocity correction are introduced to avoid cumulate errors .

齿轮齿距累积误差计算机程序设计

On Computerized Program Design for Accumulated Error of Teeth Distance of Gear

航位推算累积误差实时修正算法研究

Algorithm Study on Real-time Revising of Dead Reckoning Accumulated Errors

三坐标数控磨轮修整器的无累积误差插补控制方法

Interpolation method without accumulated error in three coordinate NC grinding wheel dresser

软件分时程序保证了采样数据没有累积误差。

The error accumulation of sampling data is eliminated by time-sharing programs .

轮廓控制系统的无累积误差插补法

Interpolation with non - accumulative errors for contour control

步进电机有一定的步距精度，没有累积误差。

Stepping motor has certain step distance precision , have no cumulative error .

齿轮齿距累积误差的评定

Evaluation of Total Cumulative Pitch Error of Gear

滚刀开刃磨床分度盘误差对滚刀容屑槽周节累积误差的影响

Influence of Graduation Error of Dividing Disk on Error of Hob Chip Pocket Accumulated Pitch

这些方法不需要深层的句法知识，避免了过多的累积误差；

These method adopts the syntactic infection without introducing the errors in deep sentence analysis ;

以实时构建的几何地图为基础，应用扩展卡尔曼滤波实现厘米级定位，消除了只依靠里程计定位所带来的累积误差。

The paper realizes precise localization using extended Kalman filter based on real-time metric map .

分析表明，重构误差主要来源于计算中的近似处理和累积误差。

The analysis indicates that the reconstructing errors result from approximate treatment and accumulative error .

工艺系统累积误差补偿原理的适用范围机械加工误差的分析

The Scope of an Application for the Use of Compensation Theory about Cumulative Error of Machining Complex