This paper introduces how to adopt the technology of encoder stripe number amplification and software compensation of graduation gear circular pitch error, to make high-precision graduation in gear grinding machine principal axis.
采用编码器条纹数放大和对分度齿轮的周节误差进行软件补偿的方法，可实现锥面砂轮磨齿机主轴的高精度分度。
In order to improve dynamic performances of variable speed constant frequency in constant power output running area, research situation of variable pitch control is studied, based on RBF neural network tuning PID control, wind turbine and variable pitch control model is built, generator rotate speed measurements and speed error as input contoller.
中文摘要：为了改善变速恒频风力发电系统在恒功率输出运行区域内的动态性能，在分析系统变桨距控制研究现状的基础上，基于RBF神经网络整定PID控制理论设计风力发电系统变桨距控制器，建立了风力机及变桨距机构模型，以发电机转速测量值与额定转速相比后误差为输入设计控制器。
The realization method that uses a programmable timer /counter 8254 to measure the pitch error of the ball screw shaft is introduced.
介绍了利用可编程定时/计数器8254测量滚珠丝杠螺距误差的实现方法。
And expounds the screw pitch error compensation of specific methods.
阐述了丝杆螺距误差补偿的具体方法。
And linking the principle of choosing computer visual inspection system hardware, the paper constructs hardware structure of visual inspection system, and develops measure software of thread geometry parameter and applies all above research results to quantificationally measure geometry parameters such as half angle of thread, coning and pitch of conical joint screw thread of graphite electrode, at last educes influencing expressions of the shelter of lead angle to half angle of thread change, it establishes theory base for error amendment.
论述了微小零件尺寸及形状误差的常用测量方法，提出了将视觉检测技术应用到微小零件尺寸及形状误差的测量中，构建了视觉检测系统的硬件结构，开发了相应的测量软件，应用第三章介绍的各种边缘检测方法对传动用滚子链链板进行了边缘检测对比实验，找出适合的边缘检测方法，并应用上述各章的研究结果对传动用滚子链链板节距以及圆形零件的圆度误差进行了测量。
When measuring, based on the segmented contour line of thread, we used the compiled measurement program to calculate and measure the geometrical parameters of the internal taper thread as pitch, half of thread angle and taper angle. Precisions of pitch, half of thread angle and taper angle reached ±0.012mm, ±0.17° and ±0.018°. The results satisfied with the technique requirement of production. The reason of error was analyzed.
在测量尺寸时，使用自编程序计算测量内螺纹的螺距、牙型半形及锥角，测量精度分别达到±0.012mm、±0.17°和±0.018°，满足产品的技术要求，并分析了误差产生的原因。
The result of profile, longitudinal and pitch error, and data and curve graphics will be gained after software deals with the measured data.
测得的结果数据经过计算机软件后续处理，得到齿形、齿向和齿距误差的结果数据及曲线图形。
Experiments on NIST'0l show that the system based on new supra-segmental parameters has a higher performance than the system based on the frame level pitch and energy parameters. The recognition performance of the fustion system of the cepstrum based GMM is improved and the equal error rate is decreased by 10%.
在NIST'01数据库上的实验表明，该系统性能优於基於短时帧的音源信息参数系统，更重要的是不需要大数据量的支持，且与基於短时帧倒谱参数的话者识别系统融合后，系统识别性能明显改善，等误识率相对下降10%。
At first, on the condition of neglecting the cross couple between azimuth and pitch loops, the single loop correction networks of them are designed; then on the condition of considering the cross couple between two loops, the close loop characteristic equation of DAGSP is derived and it is easy to know that the cross couple makes the system unstable; finally the forward feedback decoupled controller is designed and the error character is analyzed and simulated.
首先设计了双轴陀螺稳定平台的单回路校正网络；接着在考虑交叉耦合时，分析系统的稳定性；最后利用现代控制理论中的解耦控制，设计了消除交叉耦合的前馈控制器，并对双轴陀螺稳定平台的误差进行了分析。
In the end, the influence of force transmission in contact region by the pitch error is analysis, finding the influencing parameters, and finding the solving methods.
最后阐述了齿距误差对载荷传动接触区的影响，寻找到了影响参数，找出了解决的办法。
According to the target angular coordinates on detector, geometry of roll-pitch seeker and its location relative to the missile, the modeling of tracking gimbal angles error signals were derived to realize the close loop control of the roll-pitch seeker.
根据导引头探测器上目标的位置信息，导引头稳定平台状态及导引头与弹体间的相对运动关系，导出了导引头跟踪框架角误差信号的数学模型，以实现导引头的闭环控制。
The most common are (1) when the batter is hit by a pitched ball; (2) when a fielder mishandles a ball hit in fair territory and the batter reaches base safely as a result of the fielding mistake, known as an error; (3) when the catcher interferes with the batter's attempt to swing at the pitch; and (4) when the catcher drops a third strike and the batter reaches first base before a fielder tags the base or the batter.
如投手将球击中击球员；守场员失误，捕手触到击球员的球棒，在三击之前，击球员在守场员触垒或触杀击球员之前进至一垒等。
Developing the Data Processing System Based on VB Tooth Pitch Deviation and Tooth Pitch Accumulated Error
基于VB的数据处理系统处理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.
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；
With a compensation of the bad accuracy lead screw, the accumulated errors compensation function of the lead screw pitch sorted and fit by the quadratic polynomial can reduce the affiliated disturbance of the error compensation, and conform the robot running at a uniform speed.
在丝杠误差补偿时，用二次多项式分组拟合丝杠螺距累积误差补偿函数，以减小修正量噪声引入，保证机器人工作速度的均匀性要求。
Finally, a comprehensive summary is conducted to the tooth profile error, axial error, accumulative pitch error in gear shaving.
最后，对剃齿加工对工件齿形误差、齿向误差、周节累积误差等进行了较为全面的总结。
NC rotary table is used for the indexing of gear. Its indexing accuracy has direct influence on the accumulative pitch error.
数控回转台用来对齿轮进行分度，其分度精度直接影响齿轮的周节累积误差。
The input of controller is the error between rated power and actual output power. The output of controller is pitch angle and than a closed-loop system is composed.
控制器的输入为风机额定功率和实际输出功率的偏差，输出为桨距角命令值，由此构成一个闭环的系统。
In order to analyze the causes of LiDAR instrument cone scan angle and its impact on point clouds, differences between the impact of cone scan angle error and pitch angle error to point clouds are discussed.
分析了LiDAR仪器锥扫角产生的原因、对点云结果的影响方式，讨论了锥扫角与集成误差中俯仰角误差对点云结果影响方式的不同。
The experiments show that the method can be applied to calibration for vehicle-mounted camera, the calibrating error for azimuth and pitch angle is less than 1/100 radian.
实验表明，该方法可以在不同环境下进行车载摄像机标定，方位角和俯仰角的标定误差小于百分之一弧度。