一種新的質(zhì)量圖引導(dǎo)的相位展開算法

作者：姜文印

單位：西南交通大學(xué)現(xiàn)代物理研究所，四川成都 610000

摘要：相位展開主要用于車輪探傷時提取車輪外形信息，不同算法展開后相位的質(zhì)量也是不同的。介紹了傳統(tǒng)的質(zhì)量圖引導(dǎo)的相位展開算法，針對該算法在處理問題的不足，對其進行改進，得到了一種新的質(zhì)量圖引導(dǎo)的相位展開算法。該算法將像素點二階差分值的倒數(shù)定義為質(zhì)量點，通過將相鄰像素點進行平均，得到全新的質(zhì)量值，引導(dǎo)相位展開。通過比較枝切法、質(zhì)量圖導(dǎo)向法、最小二乘法以及本文的改進算法四種相位展開算法的仿真實驗，結(jié)果表明該算法展開誤差小，計算速度快，能夠有效處理相位展開中不連續(xù)的問題。最后通過車輪實驗驗證了結(jié)果。

關(guān)鍵詞：質(zhì)量圖導(dǎo)向法；質(zhì)量圖；相位展開；質(zhì)量值；可靠度

中圖分類號：O438.2 文獻標識碼：A

文章編號：1006-883X(2018)07-0007-07

收稿日期：2018-05-10

A New Phase Unwrapping Algorithm Based on Quality Map Guidance

JIANG Wen-yin

Institute for Modern Physics, Southwest Jiaotong University, Chengdu 610000,China

Abstract: Phase unwrapping algorithm is mainly used to extract the profile information of wheels in flaw detection. The quality values of phases are also different for different algorithms. The traditional quality-map-guided phase unwrapping algorithm is introduced firstly in this paper. A new quality-mapguided phase unwrapping algorithm is proposed aiming at the shortages of the traditional. This algorithm defines the reciprocal of the second order difference value of pixel point as the quality point. By averaging the quality values of adjacent pixel points, a new quality value is obtained to guide the phase unwrapping. The simulation results of four phase unwrapping algorithms-Branch-cut method, quality map guidance, least squares method, improved algorithm presented in this paper are compared and show that the improved algorithm has smaller error and faster calculating speed, and can deal with the problem of discontinuity in phase unwrapping effectively. Finally, the practical wheel experiments are completed and also verify the conclusion.

Key words: quality map guidance; quality map; phase unwrapping; quality value; reliability

Ag摻雜WO3納米材料的光電催化性能研究

注：福建省自然科學(xué)基金面上項目（NO. 2017J01770）；

省級大學(xué)生創(chuàng)新創(chuàng)業(yè)訓(xùn)練計劃專項（NO. 201710395032）

作者：楊靜雅，阮彩娟，韓妙玲，帥文軍，余華梁

單位：閩江學(xué)院物理學(xué)與電子信息工程系，福建閩江 350100

摘要：以鎢酸銨、硝酸銀為原料制備了Ag摻雜WO3納米材料，對材料進行X射線衍射（XRD）、掃描電子顯微鏡（SEM）表征，并在不同外加電壓下測試材料光催化降解羅丹明B的性能。實驗結(jié)果表明，適當?shù)耐饧与妶黾涌炝薃g摻雜WO3納米材料光催化降解羅丹明B的速率。

關(guān)鍵詞：Ag摻雜WO3納米材料；光電催化；羅丹明B

中圖分類號：O64 文獻標識碼：A

文章編號：1006-883X(2018)07-0015-04

收稿日期：2018-04-27

Study on Photoelectric Catalytic Performance of Ag-doped WO3Nano Materials

YANG Jing-ya, RUAN Cai-juan, HAN Miao-ling, SHUAI Wen-jun, YU Hualiang

Department of physics and electronic information engineering, Minjiang University, Minjiang 350100, China

Abstract: Ag-doped WO3nano materials are prepared with ammonium tungstate and silver nitrate as raw materials. X-ray diffraction (XRD) and scanning electron microscope (SEM) are used to characterize the materials. The photocatalytic degradation of Rhodamine B is tested under different applied voltage. The experimental results show that the appropriate applied electric field accelerates the degradation of Rhodamine B by Ag-doped nano-WO3photocatalysis.

Key words: Ag-doped nano-WO3; photoelectron-catalysis; Rhodamine B

高精度轉(zhuǎn)臺的分析與設(shè)計

作者：蘇芬平1，崔偉2

單位：1.北京航天科頤技術(shù)有限公司，北京 100091；

2.中國航天科工集團第二研究院206所，北京 100854

摘要：設(shè)計了一種高精度轉(zhuǎn)臺，選用力矩電機直接驅(qū)動負載，既消除了齒隙回差又縮短了傳動鏈，使機械結(jié)構(gòu)簡單緊湊，使控制系統(tǒng)具有反應(yīng)速度快、線性度好，共振頻率高等優(yōu)點，提高了系統(tǒng)的穩(wěn)定性及靜態(tài)、動態(tài)控制精度。高精度轉(zhuǎn)盤軸承和力矩電機配合使用，提高了轉(zhuǎn)臺的承載能力，并使轉(zhuǎn)臺結(jié)構(gòu)簡化。采用電磁制動器和齒輪副進行方位軸和俯仰軸的制動，起到斷電制動作用。對轉(zhuǎn)臺的限位、自鎖、報警等安全性和防護性能進行詳細設(shè)計介紹。并通過有限元分析驗證主要零部件的結(jié)構(gòu)強度及計算諧振頻率。

關(guān)鍵詞：轉(zhuǎn)臺；高精度；力矩電機；轉(zhuǎn)盤軸承

中圖分類號：TH115;TH12 文獻標識碼：A

文章編號：1006-883X(2018)07-0019-06

收稿日期：2018-06-06

Analysis and Design of a High Precision Two-dimensional Turntable

SU Fen-ping1, CUI Wei2

1. Beijing Keyi Aerospace Technology Co.,Ltd, Beijing 100091, China; 2.China Aerospace Science and Industry Corporation Ltd. Second Research Institute 206, Beijing 100854, China

Abstract: A high precision turntable is designed in this paper. The torque motor is used to drive the load directly, which eliminates the backlash and shortens the transmission chain. So the mechanical structure is simple and compact, the control system has many merits such as quick response, good linearity and high resonance frequency and is improved in stability and static/dynamic control precision. High precision turntable bearing and torque motor are used together to improve the bearing capacity and simplify the structure of the turntable. The electromagnetic brake and the gears are used together for braking the azimuth shaft and pitch shaft, which has the function of power-off braking. The safety and protection performance of limit control, self-lock, alarm and so on are introduced in detail. The structural strength and the resonance frequency of the main components are verified with Finite element analysis.

Key words: turntable; high precision; torque motor; turntable bearing

變異系數(shù)相似度在緊急群決策中的應(yīng)用

作者：馮長敏

單位：北京信息科技大學(xué) 理學(xué)院，北京 100192

摘要：考慮應(yīng)急決策問題，基于Jaccard 、Dice和余弦相似度，提出了一種新的相似度定義——變異系數(shù)相似度。介紹了四種相似度的特點，然后將變異系數(shù)相似性應(yīng)用于應(yīng)急群決策問題。通過每一個方案和目標方案的相似度，可以得出所有方案的一個排序，然后找出最優(yōu)方案。最后，

舉例評價中國湖南省重大冰雪災(zāi)害急救管理能力。作為比較，也給出了不同的相似性度量的決策結(jié)果。從結(jié)果看出，新方法具有更好的相似性識別，適用于緊急群決策應(yīng)用。

關(guān)鍵詞：相似性；應(yīng)急決策；變異系數(shù)；多準則群決策

中圖分類號：O231.1 文獻標識碼：A

文章編號：1006-883X(2018)07-0026-05

收稿日期：2018-05-21

Application of Variation Coefficient Similarity in Emergency Group Decision Making

FENG Chang-min

School of Applied Science, Beijing Information Science and Technology University, Beijing 100192, China

Abstract: Considering the problem of emergency group decision making, a new similarity-variation coefficient similarity is defined based on Jaccard, Dice and cosine similarity. The features of four kinds of similarity are introduced,and then the variation coefficient similarity is applied to the emergency group decision making. According to the similarity of each scheme, a ranking of all the schemes can be obtained, and then the optimal scheme can be found.Finally, an example is given to evaluate the emergency management ability of major snow and ice disasters in Hunan province of China. As a comparison, the decision results of different similarity measures are given. It is shown that the similarity defined in this paper is better in recognition and applicable.

Key words: similarity; emergency decision making; variation coefficient; multicriteria group decision-making

一種偵察打擊一體化無人機地面站軟件的設(shè)計與實現(xiàn)

作者：劉晨

單位：中國電子科技集團公司第二十七研究所，河南鄭州 450047

摘要：近年來，無人機憑借設(shè)計靈活，成本低，零傷亡的特點，在多次戰(zhàn)爭中都起到了重要的作用。偵察打擊一體化無人機既能偵察，又具有打擊毀傷能力，引起了各方的廣泛關(guān)注。本研究針對偵察打擊一體化無人機的特點，設(shè)計了一套無人機地面站軟件系統(tǒng)。文章從需求分析入手引出了軟件設(shè)計，分別從系統(tǒng)框架、模塊設(shè)計和系統(tǒng)工作流程進行了闡述，最后介紹了軟件的關(guān)鍵技術(shù)實現(xiàn)方法和應(yīng)用實例。

關(guān)鍵字：無人機；地面站；多線程

中圖分類號：TP391.9 文獻標識碼：A

文章編號：1006-883X(2018)07-0031-07

收稿日期：2018-07-05

Design and Implementation of the Ground Station Software System for Reconnaissance-attack-integrated UAVs

LIU Chen

The 27th Research Institute, China Electronics Technology Group Corporation,Zhengzhou 450047, China

Abstract: In recent years, Unmanned Aerial Vehicles (UAVs) have played important roles in many wars due to flexible design, low cost and zero casualty.Not only reconnaissance, reconnaissance and attack integrated UAVs also have the ability of combat damage, so have attracted wide attention from all parties.Based on the characteristics of reconnaissance and attack-integrated UAVs,a software system for the UAV ground stations is designed in this paper. The software design is introduced from the requirement analysis, and the system framework, module design and system work flow are expounded respectively.Finally, the key technology implementation methods and application examples of the software are introduced.

Key words: Unmanned Aerial Vehicle (UAV); ground station; multithread

世界第一款K波段DAC的設(shè)計

作者：Marc Wingender Romain Pilard Julien Duvernay

單位：Teledyne e2v 公司，美國

摘要：本文透露了Teledyne e2v 公司世界首款K波段數(shù)模轉(zhuǎn)換器EV12DS460A背后的設(shè)計秘密，介紹了為提高性能和規(guī)避CMOS設(shè)計限制而引入的超高速制程。解釋了如何通過緊湊的單核量化器，配合仔細斟酌的設(shè)計方案，讓EV12DS460A的性能具有突破性提高。最后說明布線和電路簡化的細微差別是設(shè)計時應(yīng)考慮的重要因素。

關(guān)鍵詞：K波段；數(shù)模轉(zhuǎn)換器；EV12DS460A；帶寬

中圖分類號：TN79+2 文獻標識碼：B

文章編號：1006-883X(2018)07-0039-07

收稿日期：2018-04-25

Design of the World's First K-band DAC

Marc Wingender, Romain Pilard, Julien Duvernay

Teledyne e2v, USA

Abstract: The design secrets behind the world's first K-band data-analog converter (DAC) EV12DS460A from Teledyne e2v are presented.The reasons why new capabilities can emerge are avoiding established CMOS design principles and applying an ultra-high speed process. It is explained how a compact, single-core quantizer coupled with careful design choices leads to the breakthrough performance of EV12DS460A . Finally, it is shown that the delicate differences between wiring and circuit simplification are important factors to be considered in design.

Key words: K band; digital-analog converter(DAC); EV12DS460A; band wide

使用模塊化平臺實現(xiàn)高能效物聯(lián)網(wǎng)設(shè)備

作者：Pavan Mulabagal

單位：安森美半導(dǎo)體，美國

摘要：傳感技術(shù)的最新進展和新出現(xiàn)的通信協(xié)議為物聯(lián)網(wǎng)的推廣提供了動力。但是，物聯(lián)網(wǎng)多學(xué)科性質(zhì)對技術(shù)的廣泛性要求，以及用戶對電池壽命的擔(dān)憂，對發(fā)展物聯(lián)網(wǎng)應(yīng)用提出了挑戰(zhàn)。保證高效運行的互聯(lián)技術(shù)、創(chuàng)新的免電池傳感器和綜合性模塊化開發(fā)平臺將為物聯(lián)網(wǎng)的潛在用戶和解決方案提供商提供更多的機會。本文介紹了安森美半導(dǎo)體的藍牙低能耗生態(tài)系統(tǒng)RSL10、智能無源傳感器技術(shù)和IoT開發(fā)套件(IDK)，有助于快速制作物聯(lián)網(wǎng)相關(guān)產(chǎn)品原型，減少產(chǎn)品上市時間。

關(guān)鍵詞：物聯(lián)網(wǎng)；低功耗藍牙；智能無源傳感器；物聯(lián)網(wǎng)開發(fā)套件

中圖分類號：TP212 文獻標識碼：D

文章編號：1006-883X(2018)07-0046-03

收稿日期：2018-05-20

Implementing Energy Efficient IoT Devices Using Modular Platforms

Pavan Mulabagal

ON Semiconductor, USA

Abstract: New technical advances in sensing and emerging communication protocols give the deployment of the Internet of Things (IoTs) real momentum.But a broad set of competencies from the multi-disciplinary nature of IoT and the worry about battery life are challenges for development of IoT application.Connectivity technologies delivering highly efficient operation, innovative battery-free sensor and comprehensive modular developing platform will give more help for potential users and solution providers of the IoTs. A Bluetooth low energy ecosystem RSL10, smart passive sensing technology and an IoT Development Kit (IDK) from ON Semiconductor are introduced, which aid customers in rapidly prototyping relevant IoT products and reduce the time-tomarket of products.

Key words: Internet of Thing (IoT); Bluetooth low energy; smart passive sensor; IoT development kit