扫描周期

详述了用PLC控制步进电机实现数控系统的定位控制功能的方法，新型PLC的高速脉冲输出功能有效地避免了扫描周期的影响，完成快速移动和精密定位。

In this paper , we described particularly the method that PLC controls stepping motor to accomplish orientation function in NC system , which new type PLC being able to output high-speed pulses that can avoid PLC scan cycle impacting validly , drives stepping motor to finish orientation .

过大的扫描周期将使VCSEL输出双稳区宽度对反馈率的变化不敏感。

And , the width of the bistability region of VCSEL will become insensitive to the variety of the feedback index with great scan period .

在研究过程中，还确定了一种测试PLC平均扫描周期的有效方法。

During the research , we found one method that could gain the average scan circle of PLC .

以扫描周期方式运行的PLC，难以对电站并车过程中的频差、相位等瞬变信号作出及时的响应。

The PLC runs in the way of scanning period , so it is difficult to respond to the instantaneous signals of the frequency and the phase in the power plant synchronizing .

因此，通过调整光电负反馈的大小以及注入电流的扫描周期，可实现对VCSEL偏振双稳特性的控制。

As a result , the polarization bistability characteristics can be controlled through adjusting the strength of optoelectronic feedback and the scan period of injection time-varying current .

可变扫描周期程控交换机BHCA值的计算

Evaluation of BHCA for SPC Exchanges With Variable Scanning Period

由于贝加莱PCC采用分时多任务操作系统，控制程序采用模块化设计，用不同的程序实现不同的功能，并依据其重要程度采用不同的扫描周期。

Because B & R PCC uses time-sharing multi-task operation system , control program uses modularization concept , and it makes different program to realize different function , also it makes different cycle time according to the importance .

根据文献[1]悬停直升机主旋翼回波信号特点，提出了一种新的多扫描周期积累检测器，研究了用直接Hough变换实现该检测器的具体方案。

Based on the echo features of a helicopter rotor presented in Reference [ 1 ] , a new detector is proposed to detect hovering helicopter by using data of multi-scanning periods . And a particular method is presented to realize the detector with direct Hough transform .

雷达网系统扫描周期的研究

Study of the Mean Scan Period of Netted Radar Systems

对红外成像设备扫描周期测算方法的仿真分析

Emulating Analysis of Calculating Methodology for Scanning Period of Infrared Imaging Instrument

两传感器两扫描周期的数据关联

Data association based on two-sensor and two-scan

同时还进行了可编程序控制器扫描周期与通讯速率和稳定性的关联性研究。

Meanwhile , research about the relationship between scan circle of programmable logic controller and communication performance has been put up .

在雷达的每个扫描周期内，采用最佳处理法获得了最优火力分配方案。

By using a dynamic optimum processing , the optimal fire assignment strategy is ob - tained in every radar scanning cycle .

相关波门的形状大小取决于系统的随机误差，目标的运动速度，目标的机动规律，雷达的扫描周期，外推算法等因素。

Correlation gate size is determined by measurement noise , the maneuver of target , the cycle of radar scanning , extrapolate algorithm etc.

详细研究了程控交换机中脉冲识别和位间隔识别原理，特别对脉冲收号扫描周期及位间隔扫描周期的确定作了定量分析。

This paper studied in detail the principle of pulse discerning and digital gap discerning and analyzed their scan period in SPC exchange .

本仿真系统的扫描周期可达到1毫秒以内，可以满足大多数工业控制的实时性要求。

The scanning cycle of the simulation system can be achieved within a millisecond , to meet real-time requirements of most industrial controlling .

本文利用雷达在各个扫描周期获取的距离和方位信息组成的雷达视频序列，研究了海上目标检测系统中运动目标检测、目标信息录取和粘连目标解耦的方法。

In this paper , radar video sequences composed of azimuth and range which are acquired in each scan period of radar are used to detect maritime targets .

分析并统一系统中的网络通信周期、控制器扫描周期、功能块周期信息，作为模型的采样周期。

Then the controller scan cycle , the network communication cycle and cycles of particular function blocks in control system are analyzed and unified into a whole , served as the scan cycle of the model .

实例证明，通过程序优化减少了内存资源的占用率和程序代码量，缩短了控制器的扫描周期，提高了控制系统的运行效率。

The result shows , the occupancy rate of memory resources is decreased , and the amount of program code is reduced . Thus the scanning cycle is shortened , and the efficiency of the control system is improved .

本文所设计的卫星天线全数字伺服系统已通过卫星有效载荷系统的联试实验，结果表明：该系统具有较高的转速稳定性和高精度的扫描周期，可以在外太空模拟环境下长期可靠地运行。

The full-digital servo control system of satellite antenna has already passed the whole satellite payload system test . The result shows that the system has good speed stability , high precision scan period and can work reliably under the simulative space environment .

本文以连铸板坯长度在线测量系统为例，分析图像检测窗口大小、位置、动态特征匹配算法和测量系统扫描周期、边缘匹配准确性的关系。讨论了影响测量系统鲁棒性的一些主要因素。

With the continuous slab length gauge system as an example , the relations among detection windows size , location , dynamic feature match arithmetic and scan period , edge matching veracity were analyzed , some factors affecting the system 's robustness were discussed in the paper .

讨论了在FTNMR定量测量中，怎样选择脉冲翻转角和扫描重复周期才能在保证定量准确度的前提下得到最高的累加效率。

The effect of some pulse parameters on both of the accuracy and the accumulation efficiency in quantitative FT NMR measurements is discussed , which provides a theoretical basis for the optimum choice of these parameters .

全向扫描的周期性半宽度微带漏波天线设计

The Periodic Half-width Microstrip Leaky-Wave Antenna with a Backward to Forward Scanning Capability

该结构将前一次扫描测试周期的测试响应合理修改后作为下一测试周期的测试向量，在保持了原有的扫描输入个数的情况下降低了测试数据量和测试应。

It takes reasonable modifications of the previous test as test data of the test cycle , which maintains the original number of scan input and reduces the amount of test data effectively .

结果表明：该种加热方式能够诱发铬层沿激光扫描方向呈周期性分布的屈曲变形。

It is observed that this mode of heating can induce chromium coating to periodically buckle along the laser scanning direction .

当信号光束进行圆形扫描时，周期性变化的相干光功率中将包含光束的方向信息，据此控制细瞄准镜调整光束方向，实现星间跟踪。

The resulting periodic change in coherent optical power as the signal beam is scanned circularly contains the direction information of the beam . The direction information is fed back to control fine pointing mirror for inter-satellite tracking .

频率扫描法研究倍周期分岔与混沌现象

Frequency sweep method for study of period-doubling bifurcation and chaotic behavior

此技术中，在扫描测试的任意时刻（包括扫描移位周期和捕获周期），仅有一个子扫描链活跃，电路的平均功耗，总功耗和峰值功耗都显著降低。

In this technique , at a time in the scan testing ( including both scan shifting and capture cycles ), only one scan chain is active . The average , peak and total test power is reduced significantly .

首先本文提出了基于扫描BIST的精简功耗模型，在此模型的基础上，提出了通过调整扫描周期和扫描起动时间的办法来避免过高的SoC测试峰值功耗。

First a compact power model of scan based BIST is proposed . Based on the model , excessive peak power consumption during test can be avoided by adjusting the BIST period and controlling each BISTs startup .