查询词典 encoder

This paper is concerned with the RS encoder over a dual basis, and RS encoder in DVB-C system was implemented as a example.

在有限域的各种算术运算中，乘法是研究较多的，其中Berlekamp比特串行乘法器的硬件较为简单[1]，适合用于RS码编码器。

Then it is gradually used to replace the optical encoder of a servomotor. However, the resolution of a magnetic encoder is not so good as that of an optical encoder. When the magnetic drum was magnetized the required pole pitch is needed very small in size, in order to satisfy the requirements of the resolution in a servomotor.

然而，磁性编码器的解析度尚不及光学式编码器，为了磁性编码器可满足伺服马达机构中所要求的解析度，因而当将磁性编码器内的磁环充磁时，其极间距必须尽可能地缩小，以使得可充磁的极数增加。

Based on the uniform magnetization model of the surface magnetic field distribution on multi pole drum for magnetic encoder , the surface magnetic field distribution on multi pole drum for magnetic encoder was studied with numerical analysis method, and the general expression of surface magnetic field distribution on multi pole drum was found.

基于磁编码器多极磁鼓表露场分布的均匀磁化理论模型，采用数值分析方法计算磁编码器多极磁鼓的表露场分布，得到了多极磁鼓的表露场分布的数值表达式。

Then, a control model of MPEG-2 encoder system is built. And theoretical analysis using control theory and some experiments show that the proposed multiplexor and every encoder in the MPEG-2 encoder system work normally and stably.

建立了整个MPEG-2编码器系统的控制模型，采用控制理论分析以及实验表明本文所设计的系统复用器及各路编码器能稳定正常工作。

The embedded video encoder can process A/D transform of video signal, video compressing, network protocol processing and camera controlling. Hence the hardware of encoder includes H.263 Video Encoding Unit and Network Protocol Processing Unit based on TM1300, Network Interface Unit based on RTL8139C chip and Peripheral Extending Unit based on W77E58 which deals with camera controlling.

硬件设计由以下四个单元组成：以 TM1300为核心的视频编码单元和协议处理单元；采用 RTL8139C芯片的网络接口单元；以及单片机 W77E58为核心的完成摄像头控制和透明数据传输的外围扩展单元。

Open Linear Encoder includes main grating scale and optical encoder head. This optical encoder head includes LED light source, optical detector module, and secondary phase-grating. LED light will pass through the plano-convex lens and produces parallel light. As the parallel light pass through secondary grating, the quadratic image display on the main grating scale. And the Moire interference will be reflected from the main grating scale and detected by optical detector module, as there is a relative shift between the main and secondary grating. From detecting the periodic sinusoidal signal with phase difference 90°, the period represents the grating pitch, using the counter to detect the number of periodic signals to get the displacement, and we can adapt the technology of electron subdivide further to increase the resolution of measurement .

反射式光学尺包括主光栅尺及光学读头，光学读头包含LED光源、光侦测器模组及相位式副光栅，LED光源经平凸透镜，产生平行光穿透副光栅后，副光栅之二次成像投射在反射主光栅尺上，当主、副光栅因相对运对产生之Moire干涉经主光栅尺反射至光电检测器，检出相位差90°之周期性弦波讯号，其周期代表栅距，因此可用计数器检出周期性讯号数目得到位移量，可进一步采用电子细分割技术提高解析度。

First the idea of visual protractor is introduced,then a Kalman filtering method is used to fuse visual information with encoder information to correct the mobile robot tracks obtained with encoder.

首先，介绍了视觉量角计的思想，进而利用卡尔曼滤波的方法将视觉信息与码盘信息相融合，对依靠码盘得到的航迹进行了修正。

The present invention relates to a method for heuristically starting up DC brushless servo electric machine, including the following steps of (1) after powerup of an increment type photoelectric encoder, electrifying a stator winding two by two with identical time interval to generate six-directional stator winding resultant magnetic fields;(2) detecting six different angles rotated by the rotor within identical tiny time interval by the photoelectric encoder;(3) selecting most positive value rotation angle from the six different angles, and determining maximum torque corresponding to the stator winding resultant magnetic field, and implementing servo startup using the maximum torque as constant starting torque;(4) after the zero-point signal of the photoelectric encoder occurring, switching to servo operation with normal constant torsion.

本发明直流无刷伺服电机试探启动方法，采用如下步骤：(1)增量式光电编码器上电后对定子绕组采用相同的时间间隔两两通电，顺序产生六个方向的定子绕组合成磁场；(2)由增量式光电编码器检测出转子在相同的微小时间间隔内分别转过的六个不同的角度；(3)从转子六个不同的角度中选出最大正值的转角，确定相应定子绕组合成磁场对应的最大转矩，并以该最大转矩为恒定启动转矩进行伺服启动；(4)当增量式光电编码器零点信号出现后，切换为正常恒转矩伺服运行。

Installation of the encoder wheel on the machine from the machine encoder wheel drive rotation, Dsp by collecting the encoder pulse to know at this time and current wheel rotation speed, based on the current rate of compensation the amount calculated using the electromagnetic Dsp Control 8 valve action, now do first move to control a solenoid valve.

将编码器安装机器的滚轮上，由机器的滚轮带动编码器旋转，Dsp通过采集编码器的脉冲知道此时滚轮旋转角度及当前的速度，根据当前的速度计算出补偿量，用Dsp控制八电磁阀动作，目前先做控制一个电磁阀动作。

Conventional video compression algorithms have higher compressibility, but the output code stream still needs recoding. A selfadapting arithmetic encoder was required in practical application to produce a final code stream, which can eliminate redundancy in binary code stream to obtain higher encode efficiency. QM arithmetic encoder is a high efficiency encoder designed for the simplicity and speed.

传统的图像压缩算法有较高的压缩码率，但生成的码流仍需要再次编码，实际使用中需要通过一个自适应的算术编码器才能生成最终的码流，以消除二进制码流中的冗余，得到更高的编码效率。

Objective: To study the effect of polycythemia on blood oxygen saturation.

裴蕾目的：观察RBC剧增而引起的高粘血症对血氧饱和度的影响。

Based on SIMPLER algorithm in the curvilinear body-fitted coordinates, the calculations were performed for Pr=0.7, Re=10~1000 on non-orthogonal non-staggered grids which are generated by elliptic equation systems.

采用曲线坐标系下压力与速度耦合的SIMPLER算法，数值研究了周期性渐扩渐缩波纹通道内脉动流动与换热情况，流动Re数的范围为10~1000，Pr数为0.7。