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TRANSACTIONS OF NANJING UNIVERSITY OF AERONAUTICS

AND ASTRONAUTICS

Vol.16 No.1Jun 1999

CONTENTS

THEORETICAL AND EXPERIMENTAL RESEARCH

A Delta Inference Operator for Reasonable Consequence Relation Gu Hongfang，

Mao Zheng， Xiao Xi′an（1）

OffLine Interpreter of AgentOriented Programming Language AOPLID Li Bin， Zh

ang Dongmo， Zhu Wujia(6)

Autofocusing of Synthetic HRR Radar Using SteppedFrequency Waveforms Zhu Dai

yin, Zhu Zhaoda, Dai Mingzhen(12)

An Algorithm of Edge Detection Based on Entropy Operator Wang Hui, Zhang Jihong

(19)

Design and Performance of Symbol/Sequence TCM for DS/SSMA System over Mobile Rad

io Channel Yang Fengfan, Bi Guangguo, Xu Zongze(24)

A Novel PhaseShifted ZeroVoltageSwitched PWM Converter Ruan Xinbo, Yan

Yangguang(31)

Application of Interval Kalman Filter to an Integrated GPS/INS System He Xiufen

g, Chen Yongqi(39)

A Novel Aeronautical Static Inverter with High Frequency Pulse DC Link

Chen Daolian, Liu Zhizheng, Yang Yangguang, et al(46)

Fuzzy Coordination and Force/Position Control of Robotic Manipulator Qiao Bing,

Wei Zhongxin, Zhu Jianying(53)

A Holonic Framework of Reconfigurable Shop Floor Control Systems in Automated M

anufacturing Systems Zhou Yanfei, Ji Penghua, Fan Cheng, et al(59)

Analytical Solutions for Mode Ⅲ Crack in Piezoelectric Materials Ga

o Cunfa, Fan Weixun(68)

A Method for Predicting the Buckling Loads of Composite Laminated Strips with a

Surface Notch Hu Zili(73)

Decentralized Adaptive Control for Linear TimeInvarient Systems with FirstOr

der Interconnections Huang Jinquan, Sun Jianguo(78)

Influence of VirtualPhoton Field on Collapse and Revival Phenomenon in TwoPh

oton JC Model without RWA Yang Yannan(84)

An Equivalent Proposition to the Conjecture of Goldbach Wang Youjing, Liu Zongj

ie(91)

RESEARCH BULLETINS

Integration of Generic Shop Floor Control Ye Wenhua, Wang Ningsheng, Louis Chu,

et al(94)

Study on DiamondLike Carbon Thin Film by Filtered Vacuum Arc Deposition

Zhu Jijun, Zuo Dunwen, Wang Min(100)

Piezoresistance Characteristics of Orthotropic Materials Xiao Jun, Fan Weixun

(105)

ACADEMIC NOTES

The First Seminar on National Ultrasonic Motor Technology Was Held in NUAA

(5)

15 Professors Are Authorized as Doctors′ Teachers of NUAA (67)

TNUAA Received Publication Licence of Journals (72)

The 22nd Congress of the International Council of the Aeronautical Sciences (IC

AS) Will Be Held (83)

JNUAA and TNUAA Are Included in Famous Index Journals at Home and Abroad (93)

The 2nd AsiaPacific Conference on System Integrity and Maintenance (ACSIM) Wil

l Be Held (108)

南京航空航天大学学报(英 文)

1999年6月 第16卷第1期

目 次

理论与试验研究

基于合理后承关系的δ推理算子 顾红芳 毛 峥 肖奚安(1)

面向agent的程序设计语言AOPLID的离线解释器 李 斌 张东摩 朱梧木贾(6)

步进频率波形合成高距离分辨雷达的自聚焦 朱岱寅 朱兆达 戴明桢(12)

一种基于熵算子的图像边界检测算法 王 晖 张基宏(19)

移动无线信道的符号/序列TCM DS/SSMA系统的设计和性能分析 仰枫帆 毕光国 许宗泽(2

4)

一种新颖的移相控制零电压开关PWM全桥变换器 阮新波 严仰光(31)

区间Kalman滤波器及其在GPS/INS组合导航系统中的应用 何秀凤 陈永奇(39)

新颖的高频脉冲直流环节航空静止变流器 陈道炼 刘志政 严仰光 等(46)

模糊协调与机器人力/位混合控制 乔 兵 尉忠信 朱剑英(53)

自动化制造系统中可重配置车间控制系统的Holonic框架 周燕飞 姬鹏华 范 澄 等(59

)

压电材料内III型裂纹问题的解析解 高存法 樊蔚勋(68)

含表面裂纹复合材料层压板条的屈曲载荷估算方法 胡自力(73)

一阶关联线性定常系统的分散自适应控制 黄金泉 孙健国(78)

无旋波近似下双光子JC模型中虚光场对衰变和回复现象的影响 杨雁南(84)

哥德巴赫猜想的一个等价命题 王友菁 刘宗杰(91)

研究简报

通用车间控制器的集成研究 叶文华 王宁生 朱锦标 等(94)

过滤式真空电弧沉积类金刚石薄膜的研究 朱纪军 左敦稳 王 珉(100)

正交异性材料的压阻特性 肖 军 樊蔚勋(105)

　

A DELTA INFERENCE OPERATOR FOR REASONABLE CONSEQUENCE RELATION

Gu Hongfang

Basic Department, Institute of Nanjing Communication and Engineering Nanjing 21

0016,P.R.China

Mao Zheng

Department of Mechanical Engineering, NUAA 29 Yudao Street, Nanjing 210016,P.R.C

hina

Xiao Xi′an

Group of Mathematics, Meteorological College of the Air Force, Nanjing 211100,P

.R.China

ＡＢＳＴＲＡＣＴ

This paper determines a delta inference operator C based on the notion of reaso

nable consequence of Adams′ system and studies its properties. It shows anothe

r approach to study inductive and probabilistic reasoning.

Ｋｅｙ　ｗｏｒｄｓ: reasonable consequence; inductive logic; probabilistic logic

; inclusion; monotony; cumulativity

　

基于合理后承关系的δ推理算子

顾红芳

(南京通信工程学院基础部 南京，210016)

毛 峥

(南京航空航天大学机电工程学院 南京，210016)

肖奚安

(解放军空军气象学院数学教研室 南京，211100)

摘要 基于合理后承关系构造的δ推理算子是合理后承关

系的又一表示形式，通过对这一δ推理算子性质的讨论，可以知道合理后承关系是一个满足

包含律、单调律、有限累积律的推理关系。δ推理算子的提出，提供了一条新的研

究归纳逻辑和概率逻辑的方法。

关键词：合理后承；归纳逻辑；概率逻辑；包含律；单调律；累积律

　

　

OFFLINE INTERPRETER OF AGENTORIENTED PROGRAMMING LANGUAGE AOPLID

Li Bin１ Zhang Dongmo１，２ Zhu Wujia２，１

(1 Department of Computer Science and Engineering, NUAA 29 Yudao Street, Nanjin

g 210016,P.R.China)

(2 State Key Laboratory for Novel Software Technology, Nanjing University Nanji

ng　210093，P.R.China)

ＡＢＳＴＲＡＣＴ

AOPLID is a novel agentoriented programming language whose theoretical

framework is the existed situation calculus theory and agent model based on int

entiondriven manner. An AOPLID program is represented in set manner. In this p

aper, an offline AOPLID interpreter in Prolog is implemented, based on the off

line AOPLID program semantics. At the same time, the set of rules is given whi

ch transforms an AOPLID program represented by sets into Prolog clauses so that

it can be interpreted by the offline interpreter. Finally, the sound codes of

the offline interpreter are listed.

Ｋｅｙ　ｗｏｒｄｓ: programming language； interpreter； situation calculus

　

面向agent的程序设计语言AOPLID的离线解释器

李 斌１ 张东摩1,2 朱梧木贾２，１

（１　南京航空航天大学计算机科学与工程系 南京，210016）

(２　南京大学软件新技术国家重点实验室 南京，210093)

摘要 AOPLID是以现有的情境演算理论和基于意向驱动方式

的agent模型为理论框架建立的一种面向agent的程序设计语言,AOPLID程序以集合方式表示

。

本文基于离线执行方式的AOPLID程序语义，用Prolog语言实现了AOPLID的程序解释器，同时

给出了将以集合方式表示的AOPLID程序转换成Prolog子句的转换规则以及AOPLID离线解释器

的源代码。

关键词：程序设计语言；解释器；情境演算

　

　

AUTOFOCUSING OF SYNTHETIC HRR RADAR USING STEPPEDFREQUENCY WAVEFORMS

Zhu Daiyin Zhu Zhaoda Dai Mingzhen

(Department of Electronic Engineering，NUAA 29 Yudao Street, Nanjing 210016,P.R.

China)

ＡＢＳＴＲＡＣＴ

Most operating radar systems don′t have sufficient frequency bandwidth to prod

uce highrangeresolution(HRR) profile of a target. But we can use step

pedfrequency waveform in a narrow band coherent radar to obtain the HRR profil

e of a target. For moving targets which are of great importance in practical rad

ar usage, autofocusing,i.e. phase correction, is a necessary and critical step

of the synthetic HRR processing. The purpose of autofocusing is to remove the ra

dial motion effect of the target from radar echoes, and only reserve the stepped

frequency effect which is the basis of synthetic HRR capability. We investigat

e two autofocusing approaches for synthetic HRR radars using steppedfrequency

waveform in this paper. The first is motion fitting method. This method depends

on a ce

rtain parametric model, and is computationally expensive. Then we propose the it

erative dominant scatterer method. It is robust, nonparametric and simple in

computation in comparison with the motion fitting method. Experimental results b

ased on data acquired by using a metallised scale model B52 in a microwave ane

choic chamber reveal the validity and effectiveness of the method.

Ｋｅｙ　ｗｏｒｄｓ: radars; highrangeresolution; autofocusing approaches; st

eppedfrequency waveforms

　

步进频率波形合成高距离分辨雷达的自聚焦

朱岱寅 朱兆达 戴明桢

(南京航空航天大学电子工程系 南京，210016)

摘要 大多数现役雷达频带不够宽，不能直接得到目标的高

距离分辨(HRR)剖面，但是窄带相参雷达可采用步进频率波形得到目标合成的HRR剖面。在雷

达实用中重要的是运动目标，对于运动目标，自聚焦即相位校正是合成HRR处理必需和关键

的步骤。自聚焦的目的是从雷达回波中消除目标径向运动的影响，只保留步进频率的影响，

而后者是合成HRR能力的基础。本文研究步进频率波形合成HRR雷达有两种自聚焦方法，第一

种是运动拟合，这种方法依赖于某种参量模型，而且计算复杂。本文提出迭代强散射点法，

是一种鲁棒和非参量的方法，而且计算简单。在微波暗室中用B52金属缩比模型采集了

数据，实验结果表明，此方法是正确和有效的。

关键词：雷达；高距离分辨；聚焦方法；步进频率波形

　

　

　

AN ALGORITHM OF EDGE DETECTION BASED ON ENTROPY OPERATOR

Wang Hui Zhang Jihong

(Institute of Information Engineering, Shenzhen University Shenzhen 518060,P.R

.China)

ＡＢＳＴＲＡＣＴ

This paper presents an algorithm of edge detection in image processing. A new

entropy operator and threshold estimation technique are effectively proposed. Th

e algorithm overcomes some drawbacks of Shiozaki operator. It not only has high

er speed but also can extract the edge better. Finally, an example of 2D

image is gi

ven to demonstrate the usefulness and advantages of the algorithm.

Ｋｅｙ　ｗｏｒｄｓ: image processing; edge detection; entropy operator

一种基于熵算子的图像边界检测算法

王 晖 张基宏

(深圳大学信息工程学院 深圳，518060)

摘要 提出了一种新的适用于灰度图像的边界检测熵算子。它基于指数熵的概念，能够有效

地克服Shiozaki算子的缺陷。同时引入边界存在概率给出自

动确定阈值的方法。实验结果表明，新算法可以较快较好地提取图像边界。

关键词:图像处理;边界检测;熵算子

　

　

　

　

DESIGN AND PERFORMANCE OF SYMBOL/SEQUENCE TCM FOR DS/SSMA SYSTEM OVER MOBILE RA

DIO CHANNEL

Yang Fengfan１ Bi Guangguo２ Ｘu Zongze１

(1 Department of Electronic Engineering,NUAA 29 Yudao Street, Nanjing 210016,P

.R.China)

(2 Department of Radio Engineering，Southeast Unive

rsity Nanjing 210096,P.R.China)

ＡＢＳＴＲＡＣＴ

A novel kind of multidimension symbol/sequence trelliscoded modulation (TCM)

based on TCM of lower coding rate has been constructed. The redunda

ncy of this new kind of TCM is provided not only by the modulated symbol sequenc

e but also by the PN sequences for spreading spectrum as well. The performance o

f direct sequence spread spectrum multiple access (DS/SSMA) system with this sym

bol/sequence TCM over flat Rayleigh fading channel has been investigated by theo

retical analysis and numerical simulation. The results obtained in this research

demonstrate the performance improvements of this system in comparison with that

of the DS/SSMA system with conventional TCM under the same conditions.

Ｋｅｙ　ｗｏｒｄｓ:trellis coded modulation; direct sequence spread spectrun mul

tiple access; Rayleigh fading channel; max

imal likelihood decaling; probability of bit error rate

移动无线信道的符号/序列TCM DS/SSMA系统的设计和性能分析

仰枫帆１） 毕光国２） 许宗泽１）

(１）　南京航空航天大学电子工程系 南京，210016)

(２）　东南大学无线电工程系 南京，20096)

摘要 基于低码率TCM构造了一种新型多维符号/序列TCM，它

的纠错冗余由编码符号序列和扩谱伪随机序列共同提供。我们运用理论分析和数值模拟方法

研究了在平坦瑞利衰落信道下采用该符号/序列TCM的直扩多址系统的性能。结果显示在相同

的条件下，采用符号/序列TCM的直扩多址系统较采用传统TCM的直扩多址系统具有更优越的

性能。

关键词：网格编码调制；直接序列扩频多址；瑞利衰落信道；最大

似然译码；比特误码率

　

　

　

A NOVEL PHASESHIFTED ZEROVOLTAGESWITCHED PWM CONVERTER

Ruan Xinbo Yan Yangguang

　

(Department of Automatic Control, NUAA

29 Yudao Street, Nanjing 210016,P.R.China)

ＡＢＳＴＲＡＣＴ

Phaseshifted converter realizes zerovoltageswitching (ZVS) with the use

of leakage inductance of the main transformer, however, the realization of ZVS

for lagging bridge leg is difficult. This paper proposes a current enhanced prin

ciple, and based on the principle, a novel phaseshifted converter is proposed,

which adds an auxiliary resonant net to the conventional fullbridge convert

er

to help the lagging bridge leg to realize ZVS. The principle and the design of

the novel converter are analyzed, and the simulational and experimental results

verify the principle.

　

Ｋｅｙ　ｗｏｒｄｓ: zerovoltageswitching; resonant converter; simulation

一种新颖的移相控制零电压开关PWM全桥变换器

阮新波 严仰光

(南京航空航天大学自动控制系 南京，210016)

摘要 移相控制全桥变换器能够实现开关管的零电压开关，

但滞后桥臂难度很大。本文提出了电流增强原理，在此基础上，提出了一种新颖的移相控制

全桥变换器，它是在传统的全桥变换器中加入了一个辅助谐振网络，来帮助实现滞后桥臂开

关管的零电压开关。文中对这种变换器的工作原理作了分析，仿真与实验结果验证了该

变换器的可行性。

关键词：零电压开关；谐振变换器；仿真

　

　

APPLICATION OF INTERVAL KALMAN FILTER TO AN INTEGRATED GPS/INS SYSTEM

He Xiufeng

　

(Department of Automatic Control, NUAA 29 Yudao Street, Nanjing 210016,P.R.China

)

Chen Yongqi

(Department of Land Surveying and GeoInformatics The Hong Kong Polytechnic Un

iversity, Kowloon, Hong Kong)

ＡＢＳＴＲＡＣＴ An interval Kalman f

ilter (IKF) algorithm based on the interval conditional expectati

on is applied to an integrated global positioning system/inertial navigation sys

tem (GPS/INS). Because the IKF algorithm is appl

icable only to linear interval systems, the extended interval Kalman filter (EI

KF) algorithm for nonlinear integrated systems is developed. A highdynamic a

ircraft trajectory is designed to test the algorithm developed. The results of c

omputer simulation indicate that the EIKF algorithm is consistent with the tr

aditional SKF scheme, and is also effective for uncertain nonlinear integrated

system.

　

Ｋｅｙ　ｗｏｒｄｓ: GPS； INS； Kalman filter； simulation; filter algorithm

区间Kalman滤波器及其在GPS/INS组合导航系统中的应用

何秀凤

(南京航空航天大学自动控制系 南京，210016)

陈永奇

(香港理工大学测量与地理信息学系 九龙 香港)

摘要 研究了基于区间条件期望的区间Kalman滤波算法，

并将其应用到了GPS/INS组合导航系统中。由于区间Kalman滤波算法仅适用于线性区间系统

，本文给出了适合于非线性系统的推广区间Kalman滤波算法。本文还设计了一条高动态飞行

轨

迹来检验所提出的滤波算法。测度结果表明，推广的区间Kalman滤波算法对于不确定的组合

导航系统是有效的。

关键词：惯性导航系统；全球卫星定位系统；卡尔曼滤波器；仿真；滤波算法

　

A NOVEL AERONAUTICAL STATIC INVERTER WITH HIGH FREQUENCY PULSE DC LINK

Chen Daolian Liu Zhizheng Yan Yangguang Hu Yuwen

(Department of Automatic Control,NUAA 29 Yudao Street, Nanjing 210016,P.R.China

)

ＡＢＳＴＲＡＣＴ

A new combined softswitching technique and a novel topology of aeronau

tical static inverter with high frequency pulse dc link are proposed in this pap

er, namely an electrical isolated converter can realize softswitching of two

stage cascade converters. It lays technical foundation for high power density

, high efficiency and low cost aeronautical static inverter. The operation and d

esign approach of this topology are carefully analyzed and studied. The validity

of this topology is verified by simulation and test.

Ｋｅｙ　ｗｏｒｄｓ: inverters; high frequency links; active clamp circuits; comb

ined softswitching techniques; three state discrete pulse modulation

新颖的高频脉冲直流环节航空静止变流器

陈道炼 刘志政 严仰光 胡育文

(南京航空航天大学自动控制系 南京，210016)

摘要 提出了新颖的综合软化开关技术和高频脉冲直流环节

航空静止变流器拓扑，即一个电气隔离的变换器能实现级联的两级变换器的软开关，为高功

率密度、高变换效率、低成本的航空静止变流器奠定了技术基础，详细分析研究了这种电路

拓扑的原理和设计方法，仿真与试验均证实了这类电路拓扑的可行性。

关键词：逆变器；高频环节；有源箝位电路；综合软化开关技术；三态离散脉冲调制

　

FUZZY COORDINATION AND FORCE/POSITION CONTROL OF ROBOTIC MANIPULATOR

Qiao Bing Wei Zhongxin Zhu Jianying

(Department of Mechanical Engineering, NUAA 29 Yudao Street, Nanjing 210016, P.

R. China)

ＡＢＳＴＲＡＣＴ

It is crucial for implementing force/position control of robotic manipulator und

er the constraint of unknown environment to determine the force control and the

position control directions. This paper presents an online algorithm to real t

imely estimate the tangent and the normal vectors of the constraint surface base

d on the measured contact force under the consideration of frictional force. A f

uzzy synthesis policy is proposed to coordinate the conflict between the complia

nt force control and the stiff position control. An experimental study on an Ade

ptThree, a SCARAtype robotic manipulator, is conducted. The experimental

results show that the policy presented in the paper is effective.

Ｋｅｙ　ｗｏｒｄｓ: robotic manipulator; force/position control; constraints; co

ordination; fuzzy synthesis

模糊协调与机器人力/位混合控制

乔 兵 尉忠信 朱剑英

（南京航空航天大学机电工程学院 南京，210016）

摘要 实时估计力控方向和位控方向对于机器人在未知环境

约束下的运动控制至关重要。本文提出一种未知约束在线估计算法，考虑摩擦力的影响，利

用力反馈信号实时求得环境切向和法向以指导柔顺运动控制，并采用模糊综合的方法协调位

控刚性和力控柔顺性要求之间的矛盾。在AdeptIII机器人上的实验结果表明，该控制策略

能获得较好的力控制精度和未知表面跟踪能力。

关键词：机器人;力/位控制;约束;协调;模糊综合

　

A HOLONIC FRAMEWORK OF RECONFIGURABLE SHOP FLOOR CONTROL SYSTEMS IN AUTOMATED

MANUFACTURING SYSTE

Zhou Yanfei Ji Penghua Fan Cheng Leng Sheng

(Department of Mechanical Engineering,NUAA 29 Yudao Street, Nanjing 210016, P.

R. China)

ＡＢＳＴＲＡＣＴ

The agility and the flexibility of the current shop floor control syste

ms have been limited so far, owing to the lack of structural flexibility and agi

lity in its control software layer. Most of them are based on traditional hierar

chical architecture and the topdown approa

c

h and depend structurally on their specific configuration and job scheduling. No

t only can they hardly satisfactorily adapt to these increasing changes and

disturbances, but also make the redevelopment and maintenance of shop floor cont

rol system (SFCS) to need high cost and much time. And SFCS based o

n the heterarchical ar

chitecture don′t provide a predictable and high performance system, especially

not in the heterogeneous environments, where the resources are scarce and the c

urrent decisions have serious repercussions on the future performances. For this

reason, the heterarchical control is hardly applied in industry. Obviously, it

is necessary to develop a new structural framework of reconfigurable SFCS to imp

rove their agility, flexibility and maintainability. This paper presents a holon

ic framework of reconfigurable SFCS based on holonic manufacturing concepts. The

framework is composed of resource holons, product holons and other staff holons

. The model of each holon and the cooperative mechanisms of holons are d

escribed. To verify the proposed approach experimentally, a prototype reconfigur

able SFCS for a flexible manufacturing shop floor producing discrete parts is im

plemented.

Ｋｅｙ　ｗｏｒｄｓ: holarchy; automated manufacturing system; shop floor control

; control system

自动化制造系统中可重配置车间控制系统的Holonic框架

　

周燕飞 姬鹏华 范 澄 冷 晟

（南京航空航天大学机电工程学院 南京，210016）

摘要 由于控制层结构上缺乏柔性和敏捷性，自动化制

造系统的车间的柔性和敏捷性还

受到限制。事实上，当前的大多数车间控制系统是基于传统的分层递阶结构和自顶而下的方

法来开发的，结构上依赖于各自的具体配置和它们的作业调度。这类车间控制系统不仅不能

适应车间的各种变化和意外的需求，而且重新开发和维护的成本很高。并行结构的车间控制

系统很难提供高的可预测性和高系统性能，尤其是在异构环境中。由于资源的缺乏及当前决

策的预测性不强，平行控制结构的车间控制系统很少在工业中应用。由此可见，研

究开发一种新的可重配置的车间控制系统的结构框架是必要的，以提高其敏捷性、柔性和可

维护性。本文提出一种基于holonic制造系统（Holonic Manufacturing System）概念的可

重配置车间控制系统的合弄框架。它由资源(Holon）、产品Holon等主体Holon组成。本

文描述了Holon的模型及各自的协作机制，并用此框架开发了

一套用于离散作业的柔性制造车间的原型可重配置车间控制系统。

关键词：合弄结构(holarchy)；自动化制造系统；车间控制；控制系统

　

　

ANALYTICAL SOLUTIONS FOR MODE Ⅲ CRACK IN PIEZOELECTRIC MATERIALS

Gao Cunfa Fan Weixun

(Department of Aircraft Engineering, NUAA 29 Yadao Street, Nanjing 210016,P.R,C

hina)

　

ＡＢＳＴＲＡＣＴ

A mode Ⅲ crack probl

em in a transversely isotropic piezoelectric material subjected to uniform loads

at infinity is studied based on exact boundary conditions. The complex potential

approach is used to reduce the problem to Hilbert problem. As a result, closed

form field solutions in the piezoelectric material and inside the crack are pr

esented. It is shown that the stresses and electric displacement have squarero

ot singularities at the crack tips, but the electric field is uniform everywhere

in the material and equal to the remote applied one. It is also found that the

electric displacement intensity factor depends on both material properties and t

he mechanical loads, but not the electric loads. Hence it may be concluded that

the electric loads have no influence on the field singularities.

Ｋｅｙ　ｗｏｒｄｓ: piezoelectric materials; cracks; intensity factors; antipl

ane strain; complex potential

　

压电材料内III型裂纹问题的解析解

高存法 樊蔚勋

（南京航空航天大学飞行器系 南京，210016）

摘要 基于精确的边界条件，针对远处受均布外载作用的横

观各向同性压电材料，研究了其内的Ⅲ型裂纹问题。应用复势的方法，该问题被化为Hilbe

rt问题，从而分别给出了材料内及裂纹内封闭形式的场解。结果表明，电位移在裂纹尖端呈

现平方根的奇异性，但电场在材料内是处处均匀的，且等于无限远处所施加的电载荷；结果

还表明，电位移强度因子取决于材料常数和机械载荷，但与电载荷无关。因此可得结论：电

载荷对场的奇异性无影响。

关键词：压电材料；裂纹；强度因子；反平面应变；复势

　

　

　

　

A METHOD FOR PREDICTING BUCKLING LOADS OF COMPOSITE LAMINATED STRIPS WITH A SUR

FACE NOTCH

Hu Zili

(Research Institute of Pilotless Aircraft, NUAA 29 Yudao Street, Nanjing 210016

,P.R.China)

ＡＢＳＴＲＡＣＴ

Surface notches lower the stiffness of laminated strips, so they lower the buckl

ing loads of the laminated strips, too. In this paper a new method is proposed t

o predict the buckling loads of the laminated strips with a surface notch. The t

heoretic

al and experimental results show that the buckling loads decrease as the depth

or width of the surface notches increase; when the stacking sequence of the lam

ina

ted strips is ［０°／０°／＋θ／－θ／０°／０°／＋θ／－θ］ｓ, the bu

ckling loads decrease as θ　increases. It proves that the method is relia

ble and significant.

Ｋｅｙ　ｗｏｒｄｓ: composite materials; laminated strips; surface notch; buckli

ng; calculation method

　

含表面裂纹复合材料层压板条的屈曲载荷估算方法

胡自力

（南京航空航天大学无人机研究所 南京，210016）

摘要 表面裂纹会降低层压板的刚度，因此也会降低层压板

的屈曲载荷。本文通过对含表面裂纹层压板的刚度计算进行简化，提出了一种估算含表面裂

纹复合材料层压板屈曲载荷的方法，并通过试验加以验证。结果表明，随着表面裂纹宽度或

深度的增加，层压板屈曲载荷逐渐减小；当铺层顺序为［０°／０°／＋θ／－θ／０°

／０°／＋θ／－θ］ｓ时，层压板屈曲载荷随θ增大而逐渐减小。试验和预测结

果的一致性表明了这种方法是有效的，并具有一定的实际意义。

关键词：复合材料；层压板条；表面裂纹；屈曲；计算方法

　

　

DECENTRALIZED ADAPTIVE CONTROL FOR LINEAR TIMEINVARIENT SYSTEMS WITH FIRST

ORDER INTERCONNECTIONS

Huang Jinquan Sun Jianguo

(Department of Power Engineering, NUAA 29 Yudao Street, Nanjing 210016,P.R.China

)

ＡＢＳＴＲＡＣＴ

A new decentralized adaptive control scheme is presented for linear timeinvari

ant systems with firstorder interconnections. The proposed control scheme with

“proportional plus integral” terms is used to improve the convergence rate an

d the ultimate bound of the tracking error. It is important to note that the ada

ptive scheme uses lower adaptive gains and smaller control inputs to avoid i

nput

saturation and oscillatory behavior. Simulation results are illustrated for con

trolling a dual inverted pendulum and a multivariable turbofan engine using the

proposed adaptive scheme. These simulations validate out conclusions.

Ｋｅｙ　ｗｏｒｄｓ: decentralized control; model reference adaptive control; con

trol law; numerical simulation

一阶关联线性定常系统的分散自适应控制

黄金泉 孙健国

(南京航空航天大学动力工程系 南京，210016)

摘要 提出了一阶关联线性定常系统的分散自适应控制。具

有“比例积分”型的控制算法改善了收敛速度和跟踪误差。李雅谱诺夫稳定性理论保证了

系统的稳定性。自适应控制系统具有较低的自适应增益和较小的控制输入以避免输入饱和和

振荡现象。对双倒立摆和航空发动机多变量控制的仿真结果验证了系统所获得的满意性能。

　

关键词：分散控制；模型参考自适应控制；控制定理；数值模拟

　

　

INFLUENCE OF VIRTUALPHOTON FIELD ON COLLAPSE AND REVIVAL PHENOMENON IN TWOPH

OTON ＪC MODEL WITHOUT RWA

Yang Yannan

(College of Science, NUAA 29 Yudao Street,Nanjing 210016,P.R.China)

　

ＡＢＳＴＲＡＣＴ The time evolution of

system in two photon JaynesCummings (JC) model without rotating wav

es approximation (RWA) is obtained by using the theory of ordinary differential

equations. Based on the evolution, the mean value of the atom inversion operator

〈Ｓ３（ｔ）〉　is given. The influence of the “counterrotating term

”

on the collapse and revival phenomenon is discussed from the comparison between

the cases with RWA and without RWA. It shows that the influence of the virtual

photon field makes the quantum fluctuations appear on the collapse and revival

phenomenon.

Ｋｅｙ　ｗｏｒｄｓ: photons; quantum noise; JC model; rotating waves approxima

tion; collapse and revival phenomenon; atom

inversion operator

无旋波近似下双光子JC模型中虚光场对衰变和回复现象的影响

杨雁南

(南京航空航天大学理学院 南京，210016)

摘要 采用常微分方程理论研究了无旋波近似下双光子JC

模型系统的时间演化。在此基础上，给出了原子反转算符的平均值。通过旋波近似和无旋波

近似的比较，讨论了旋波项对衰变和回复现象的影响。说明了虚光场的影响可使得在衰变和

回复现象中出现量子噪声。

关键词：光子；量子噪声；JC模型；旋波近似；衰变和回复现象；原子反转算符

　

　

　

　

AN EQUIVALENT PROPOSITION TO THE CONJECTURE OF GOLDBACH

Wang Youjing Liu Zongjie

(Department of Basic Courses,Nanjing Forest

ry University, Nanjing 210037,P.R.China)

　

ＡＢＳＴＲＡＣＴ

In this paper,a formula is given. The formula gives the number of prime number s

olutions of the indefinite e

quation p1+p2=2n. Based on it, an equivalent proposition to the conj

ecture of Goldbach is obtained.

Ｋｅｙ　ｗｏｒｄｓ: prime numbers; indefini

te equation; prime number solution; conjecture of Goldbach; equivalent propositi

on

哥德巴赫猜想的一个等价命题

王友菁 刘宗杰

（南京林业大学基础课部 南京，210037）

摘要 给出不定方程p1+p2=2n素数解的个数的一个

公式，从而给出哥德巴赫猜想的一个等价命题。

关键词：素数；不定方程；素数解；哥德巴赫猜想；等价命题

　

　

INTEGRATION OF GENERIC SHOP FLOOR CONTROL

Ye Wenhua Wang Ningsheng

(Department of Mechanical Engineering, NUAA 29 Yudao Street, Nanjing 210016, P.R

.China)

Louis Chu Robert Tam

(Industrial Center, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hon

g Kong)

ＡＢＳＴＲＡＣＴ

Based on the discussion of functions, components, control struct

ure and network computing architecture of generic shop floor control (GSFC) in

computer integrated manufacturing system (CIMS), the internal integration betwe

en components of GSFC and the external integration between GSFC and the other c

omponents of CIMS are studied. The integration models on the aspects of function

, information, processing and interface are put forward. The integration models

and the methods are implemented and applied in CIMS projects successfully.

　

Ｋｅｙ　ｗｏｒｄｓ: computer aided manufact

uring; automation; computer control; shop floor control; integration

通用车间控制器的集成研究

叶文华 王宁生

（南京航空航天大学机电工程学院 南京，210016）

朱锦标 谭惠民

（香港理工大学工业中心 香港，九龙，红）

摘要 在讨论CIMS通用车间控制器（GSFC）的功能、

组成、控制结构和网络计算模式的基础上，就GSFC的各组成部分间的内部集成和 GSFC与CIM

S的其他组成部分间的外部集成问题进行了深入研究，建立了功能集成、信息集成、过程集

成及有关接口的模型。该集成模型与集成方法已实现并成功地应用于国家CIMS应用工程。

　

关键词：计算机辅助制造；自动化；计算机控制；车间控制器；集成

　

　

STUDY ON DIAMONDLIKE CARBON THIN FILM BY FILTERED VACUUM ARC DEPOSITION

Zhu Jijun Zuo Dunwen Wang Min

(Department of Mechanical Engineering, NUAA 29 Yudao Street, Nanjing 210016,P.R.

China)

ＡＢＳＴＲＡＣＴ

Diamondlike carbon thin film is successfully deposited on silicon, titanium

and stainless steel substrate at low temperature in a filtered vacuum arc depos

ition system. Arc discharges are established on a graphite cathode in the syste

m with a toroidal macroparticle filter. A cathodeactivating magnetic field and

a filtered magnetic field to collimate the plasma beam are applied. Ion curren

t convected by the plasma beam is measured with a negatively biased probe. It is

shown that the magnetic field of the coils located on the plasma duct has a st

rong influence on cathode spot behavior. Orthogonally the designed experiments

are carried out to optimize the deposition parameters of arc stability. Finally,

the diamondlike carbon thin films are studied by scanning electron microscop

e (SEM) and Raman spectrum.

Ｋｅｙ　ｗｏｒｄｓ: diamondlike carbon; thin film; filtered vacuum arc deposit

ion

过滤式真空电弧沉积类金刚石薄膜的研究

朱纪军 左敦稳 王 珉

(南京航空航天大学机电工程学院 南京，210016)

摘要 详细介绍了过滤式阴极电弧沉积设备，并研究了磁场

对电弧稳定性的影响。采用正交实验研究了电弧稳定的优化参数。对所获得的类金刚石薄膜

进行了扫描电镜和喇曼光谱测试，表明sp3含量达到69%。

关键词：类金刚石；薄膜；过滤式阴极电弧沉积

　

PIEZORESISTANCE CHARACTERISTICS OF ORTHOTROPIC MATERIALS

Xiao Jun Fan Weixun

(Department of Material Science and Engineering, NUAA 29 Yudao Street, Nanjing 2

10016, P. R. China)

　

ＡＢＳＴＲＡＣＴ

In this paper three important characteristics in piezoresistance for the orthotr

opic material are given and proved theoretically:(1) The piezoresistance on the

principal axis of an orthotropic material is independent of shear strains/stre

sses, but correlated with the normal strains/stresses only;(2) On the principal

axis of material, following relations between piezoconductivity and piezoresisti

vity exist

（3) A laminate composed of orthotropic laminae in different orientations is ort

hotropic for its average/effective properties.

Ｋｅｙ　ｗｏｒｄｓ: orthotropic materials; principal axis of material; piezocond

uctivity; piezoresistivity

正交异性材料的压阻特性

肖 军 樊蔚勋

（南京航空航天大学材料科学与工程系 南京，210016）

摘要 阐述和证明了正交异性材料主方向的压阻特性：(1)

压阻效应只与正应变/正应力有关,而与剪切应变/剪切应力无关；(2) 压导系数与压阻系数

间存在下列关系

(3) 由正交异性单层构成的层合板的电特性呈整体正交异性，层合板主方向与坐标方向夹角

为

关键词：正交异性材料；材料主轴；压导系数；压阻系数