Table of Content

29 June 2002, Volume 23 Issue 2

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Paper

Dynamic Analysis of Mobile Weapon Systems with Clearances ： Part I Frictional Impact Model

1:Li Haiyang | 2: Wu Delong ,Zhang Yong

2002, 23(2):  145-149.  doi:10.3969/j.issn.1000-1093.2002.02.001

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A vectorial frictional impact model is developed on the basis of several other models. In this model，some basic relationships are defined as generic functions fixed by experiments or theoretical estima?tions. The hysteresis-like impact model is modified by introducing the velocity factor. Then the impact force model is established. The effect of friction is divided into three parts ： sliding，rolling and spinning， taken into consideration separately. Incorporating the impact force and the frictional force, a frictional im?pact model in three-dimensional space is eventually gained in the vectorial form and used for mobile weapon system.

Finite Element Analysis for the Interaction of a Tire and Soft Ground

Miao Changqing, Tan Huifeng, Du Xingwen

2002, 23(2):  150-154.  doi:10.3969/j.issn.1000-1093.2002.02.002

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A new method dealing with the interaction of tire and soft terrain is presented, based on the variable constraints method. With the Help of a tire analysis program, the interaction between a tire and soft terrain is studied. The characteristic of frictional contact between the tire and soft ground is analyzed besides the distribution of stress and strain in tire. It is found that the method is effective to deal with the interaction between tire and soft terrain，and the deformation and stress in footprint and the tire can be giv?en in details.

A Study on the Material Design of Composites Elastic Tripod Mount for a Machinegun

1:Li Peng, Wang Jianzhong, Wu Yaochu | 2:Song Zhiguang, Zhou Yarning

2002, 23(2):  155-159.  doi:10.3969/j.issn.1000-1093.2002.02.003

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The compliance matrix of advanced-fibre-reinforced composites elastic tripod mount for a ma- chinegun is studied using matrix analysis and considering the characteristics of the mechanical properties of composites. The results provide necessary mechanical parameters for the reasonable dynamic collocation of the machinegun system as a whole. The relations between the compliance data affecting most sensitively on the degree of accuracy of a machinegun and the flexural stiffness of the front and rear shanks are thus deter?mined. An optimal approach in designing the plying for a composites tripod mount is brought forward, based on structural analysis and aimed at controling the weight of the machinegun system.

Study of Tracking Tactics for a cship-Gun Following System via Douole-Fuzzy Controllers

Zhou Lianquan, Wang Xiaochun

2002, 23(2):  160-163.  doi:10.3969/j.issn.1000-1093.2002.02.004

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A control tactics for the following system via double-fuzzy controllers is presented. Stability of the system control by double-fuzzy controllers is analyzed. Test results demonstrate the control tactics is very efncient and that if double fuzzy controllers are combined with PID controller, even better effects can be attained.

Complementation of Archibald and Antiaircraft Missile in Low Range Air and Anti-Missile Defence

1:Bo Yuming, Guo Zhi, Du Guoping | 2:Yang Shaoyu

2002, 23(2):  164-166.  doi:10.3969/j.issn.1000-1093.2002.02.005

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For a rapid and sheltered goal entering low or nearby air, the paper shows with strict shooting principle that there exist 3 kinds of shooting opportunities possessed by archibald alone, which illustrates that archibald cannot be replaced. Through contrasting processes, in which the archibald and the antiair?craft missile are located at the same point and shooting at the same goal in the same route, the paper demon?strates the complementarity of archibald and antiaircraft missile in low range air and anti-missile defence.

Analysis of Tungsten Rods on Penetrating Ceramic Targets at High Velocity

Wei Xueying, Yu Maohong

2002, 23(2):  167-170.  doi:10.3969/j.issn.1000-1093.2002.02.006

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ceramics are often used as protective materials against impact damage because of their desir-able properties such as low density, high hardness and compressive strength. Ceramic targets are fragment?ed and comminuted locally by the extreme compressive stress wave occurring at the penetrator-target inter?face when a penetrator impacts the ceramic targets at high velocity. As the penetrator proceeds, a commin?uted zone is finally produced near the tip of the penetrator. The paper considers the influence of this region and derives the target strength term Rt in an A-T model based on the spherically symmetric cavity expan?sion theory. The depth of penetration is calculated using the A-T model when long tungsten rods impact targets at 1.5?4.5km/s. Results of this model are compared with experimental data.

An Analysis on the Safety of Electronic Safety and Arming Based on Three Environmental Signals

He Guanglin, Li Jie, Li Shiyi

2002, 23(2):  171-175.  doi:10.3969/j.issn.1000-1093.2002.02.007

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Design for logical arming is an important procedure to assure a high safety in electronic safety and arming (ESA) . This paper analyses and compares five different logical arming models. Their difference is apparent. In theory, for the five models of electronic safety and arming (ESA) ,the nighest degree of safety is attained through control with three electronic switches added by two time windows closed simultaneously. A comparison is given with the safety provided by a mechanical or mech-electronic arming adopting two in?dependent environmental signals.

Internal Pressure within a Liquid-Filled Smoke Projectile

Wu Xiaopian ,Tang Caizhen ,Hao Xueying, Nie Fengquan

2002, 23(2):  176-179.  doi:10.3969/j.issn.1000-1093.2002.02.008

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Internal pressure with a liquid-filled projectile is of vital importance in its reliability design. In case it exceeds a safety limit liquid material will leak or the projectile split. For an analysis of the internal pressure for a liquid-filled smoke projectile, an expression for calculating the pressure is derived. Results calculated from it coincides well with those required in the U. S. Army standards. Factors of the internal pressure, liquid compressibility and thermal expansion of solids are considered. There are two features that differ from former cases in calculating the pressure. It is believed that the internal pressure of liquid-filled projectile is a problem to be seriously considered by designers of liquid-filled projectiles or relevant liquid- filled containers. Key words liquid-filled projectile, liquid filled containers.

Numerical Studies of the Flowfield over a Low-Drag and Long-Range Projectile by Implicit TVD Scheme

Gao Xudong, Ji Xiaohui, Wu Xiaosong

2002, 23(2):  180-183.  doi:10.3969/j.issn.1000-1093.2002.02.009

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Three kinds of external flow field of low-drag and long-range projectile at transonic and super?sonic speed are numerically simulated. The mach numbers are 0. 96, I. I ,and 2.5 respectively, the attack angle being 4°. The three dimensional Navier-Stokes equations with two-equation K-e turbulence models and implicit finite volume TVD scheme are applied. In order to avoid the zonal method，‘ 0 ’ type grid oi single zone is produced by algebraic arithmetic. The clear flow structures are obtained. The flow fields in me wind side and leeside show apparent unsymmetry. The surface pressure distnoution shows that the configuration of low drag and long-range projectile can improve the aerodynamic characteristics.

A Study on the Extinction Properties of Cluster Particles in Smokescreen

Li Yi, Pan Gongpei, Zhou Zunning

2002, 23(2):  184-187.  doi:10.3969/j.issn.1000-1093.2002.02.010

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Cluster-cluster aggregation (CCA) model based on Monte Carlo method is used to simulate the structure of the cluster particles in a smokescreen，and the extinction coefficients and absorption coefficients of the simulated cluster structures are calculated based on the T matrix method. Average values of the above coefficients are used to simulate the extinction properties of the actual smokescreen. Results from carbon black clusters show that extinction is determined by the structure, radius and number of primitive particles besides the refractive index, and that the extinction properties can be decreased by an aggregation process. For a given primitive particle number, maximum extinction is obtained by the cluster with optimum radius of primitive particles.

A Study on the Structure of Booster Pellets Having High Initiating Capacity

Hu Shuangqi, Cao Xiong

2002, 23(2):  188-190.  doi:10.3969/j.issn.1000-1093.2002.02.011

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Based on an analysis of the shock initiation theory of explosives，the concave spherical and the semispherical structure of booster pellets are studied. Contrastive experiments between the initiation capaci?ty of the new structure and that of the conventional cylindrical structure were made using varied- composi- tion method. Experimental results showed clearly that the initiation capacity of the new structure was High?er than that of the conventional. Research results are of significance in the initiation oi insensitive main- charges.

SAR Moving Target Detection Based on an Improved Changeable Sampling Ratio Processing Technology

1:Sun Hongbo,Liu Guosui | 2: Wang Shengli,Ni Jinlin

2002, 23(2):  191-195.  doi:10.3969/j.issn.1000-1093.2002.02.012

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The proposed changeable sampling ratio processing technology (CSPT) is an effective tech?nique to detect the ratio of modulation of chirp signal. But the remainder doppler frequency influences its performance seriously. In this paper, the performance of CSPT and the influence of remainder doppler fre?quency are firstly analyzed. I hen a new algorithm is proposed to eliminate the remainder doppler frequency based entirely on the signal reconstruction from its ambiguity function. Then CSPT can achieve the ideal performance. r mally this method is applied to airborne synthetic aperture radar moving target detection and the detection scneme is given. The simulation results prove its effectiveness.

A New Integrated Method for X-Ray Image Correction in Radiograms

1:Li Yongli, Liu Guizhong | 2:Pan Deheng

2002, 23(2):  196-200.  doi:10.3969/j.issn.1000-1093.2002.02.013

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As important factors in X-ray detection, scatter noise and unbalanced distribution of X-ray etc. directly affect image quality. This paper analysed scatter distribution in X-ray images and the contribu?tion of low frequency noise to image deterioration, then deduced the expression of scatter distribution, which provides a theoretical basis for real X-ray detection. Wavelet based multiresolution analysis is used to correct images acquired under the above theoretical basis. The results are satisfactory. The method not only avoias the necessity of making different models under different experiment conditions, but also provides a promising method for real-time X-ray image correction.

Coordinate Systems for Use on Guided Bomb s Dynamics of Flight

Yu Yingjie, Zhang Yun ,Liu zaozhen

2002, 23(2):  201-204.  doi:10.3969/j.issn.1000-1093.2002.02.014

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Reference coordinate system is the basis of research on the dynamics of flight for missiles. Considering the characteristics of a guided bomb, the paper establishes a series of sideling coordinate sys?tems. The transformation relation between sideling coordinate systems and the transformation relation be?tween the sideling coordinate system and groovy coordinate system are given. The simulation results of re?search on the equations of motion of guided bomb established in sideling coordinate system show the advan?tages of the sideling coordinate system.

Stepped-Staring Searching Technique for an Imaging Guidance Missile in Target- Identification

Zhang Yanfeng

2002, 23(2):  205-208.  doi:10.3969/j.issn.1000-1093.2002.02.015

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Target searching and acquisition system is one of the key techniqes when an image guidance missile is in its light. The paper compares several traditional searching methods and gives some stepped- staring methods based on the horizontal-flight trajectory. The results can be applied in the design of missile systems.

Design and Simulation for Thermal Barrier Coatings on High Temperature Engine Nozzles

1: Zhang Jin | 2: Wu Hulin

2002, 23(2):  209-211.  doi:10.3969/j.issn.1000-1093.2002.02.016

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Nozzles are very important parts of jet engines. Engines get their forward thrust from the noz?zles by high temperature and high-pressure jets. Nozzle temperature increases rapidly resulting from the high temperature fuel jet through thermal conduction and radio.don. Ceramic barrier coatings are therefore employed to protect the nozzle by plasma spray. It is impossible to measure the inner and outer surface tem?perature of a nozzle continuously. Yet it is very important to predict the temperature distribution along the cross-section of a nozzle by simulation and calculation. In view of the characteristics of a nozzle in high tem?perature engines enduring hot gas，six thermal barrier coatings are designed for the inner surface of nozzle. Physical model of the nozzle with axial symmetry is set up. With FEM method, Marc software and Mentat processing program, the temperature field of the nozzle with different coatings when exposed to fixed tem?perature load is simulated and calculated. The temperature distribution under instantaneous states along the cross-section of throat in the nozzle is analyzed where hot load is the most heavy. Thus it provides a scien?tific method for selecting materials of the substrate and coatings, as well as for optimizing the coatings.

Effectiveness Evaluation of the Plan for Multiple Launcher Rocket System on a Warship

Pei Yin, Ma Dawei, Zhang Fuxiang

2002, 23(2):  212-214.  doi:10.3969/j.issn.1000-1093.2002.02.017

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In order to establish the effective evaluating model of the system, the complex multiple at?tribute utility theory was introduced on the basis of the WSEIAC model. I he paper gave further a compre-hensive performance evaluation of the plan for a multiple launcher rocket system on a warship，and provided a reliable suggestion to the choice of the plan.

A Monte Carlo Method for Obtaining Reliability and Availability Confidence Limits of Complex Maintenance System

Xiao Gang

2002, 23(2):  215-218.  doi:10.3969/j.issn.1000-1093.2002.02.018

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A Monte Carlo method for obtaining the reliability and availability confidence limits of com?plex maintenance system was designed based on the bootstrap method. In the spot estimation calculation, weighted statistic estimation Monte Carlo was used. As an example，the reliability and availability low con?fidence limits of a non-Markovian system with prevented maintainance were calculated by this method. The results show the feasibility of the method.

Calculation on Dynamic Characteristics of the Fuselage of Winged Missiles during Their Transportation

Xu Cheng, Hou Zhiqiang, Li Shangao,Song Guibao， Dai Yujin

2002, 23(2):  219-223.  doi:10.3969/j.issn.1000-1093.2002.02.019

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The problem of impact on the fuselage of winged missiles during their transportation was dis-cussed .The dynamic strength of the fuselage of one type of winged missile was computed with the dynamic finite element and numerical methods. Some proposals were given.

Deformation Strengthening to Tungsten Alloys through Hydrostatic Extrusion

Zhang Zhaohui, Wang Fuchi, Li Shukui

2002, 23(2):  224-227.  doi:10.3969/j.issn.1000-1093.2002.02.020

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The microstructure，mechanical properties of the tungsten alloy 93 deformed by hydrostatic extrusion are studied by way of static、dynamic tensile experiment and quantitative metallography experi- ment. The tungsten particle * s valid contiguity on different deformation direction are obtained. With this study it can be concluded that the decrease of axial valid contiguity and the elongation of tungsten particles on axis direction are the main factors to strengthen the tungsten alloy through hydrostatic extrusion.

Study on the Micro-Torque Measurement for Micro-Actuators in MEMS

1:Wang Tongyu, Pan Yuxue;2:Wu Yihui

2002, 23(2):  228-230.  doi:10.3969/j.issn.1000-1093.2002.02.021

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A new non-contact, sensitive method is proposed to measure the torque of micro-actuators with a dynamic measuring range extending 10-4?10 -7Nm. The measuring instrument is designed based on the fundamental principle of electromagnetics. Method of microforce transfer and the loading method with high accuracy are expounded and the torque-velocity relationship of the micro-actuator is analyzed.

Superplastic Forming Process and the Optimization of Die Frame for an Armour-Piercing Fin

Yang Yongshun, Wen Jiuba, Chen Fuxiao

2002, 23(2):  231-233.  doi:10.3969/j.issn.1000-1093.2002.02.022

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Based on the results of previous study [ I ], through optimization of the snperplastic forming process and further tests, the paper puts forward an optimized scheme of superplastic forming process for an armour-piercing fin. A scheme of two-way extrusion forming and moving ejection in the axial direction of sectional die is adopted. The scheme solves with the hydraulic setting die frame the difficulties arising from limited movements of a general purpose hydraulic press. The forming scheme increases the level of automa?tion in armour-piercing fin forming, stabilizes the quality of products, relieves the work intensity, increases productivity, decreases the power consumption, and meets the demands in mass production.

A Study on the Shared Environment，Multi-User Oriented Technology of 3D Virtual Plant Scenes

1：Shen Chunlong, Ji Genlin；2：Zhang Youliang

2002, 23(2):  234-237.  doi:10.3969/j.issn.1000-1093.2002.02.023

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Characteristics of application of 3D virtual plant are analyzed, and the system objectives, and framework of the multi-user shared virtual plant is presented. Method of construction for a virtual plant is analyzed. Design and implementation of system server, communication components and the multi-user a- vatar, the multi-user cooperative awareness and system running mechanisms are described in detail.

Wheel Truing Technique in Ultra-Precision Aspheric Grinding System

Chen Mingjun, Dong Shen, Zhang Feihu ,Liang Yingchun

2002, 23(2):  238-241.  doi:10.3969/j.issn.1000-1093.2002.02.024

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In the grinding of high quality aspheric parts, wheel truing plays a critical part. The paper first analyses factors of influence on the accuracy of aspheric surfaces and then describes the design of a wheel truing machine based on the spark discharge principle. The machine has its peculiarities of simplicity in construction and efficient truing rate, giving high wheel profile accuracy ready for direct use. A profile accuracy of 0. 3μm, and a surface roughness within 0. Olμm is attained.

A Model-Based Onboard Fault Diagnosis for Spacecraft Sensors

Rong Jili

2002, 23(2):  242-245.  doi:10.3969/j.issn.1000-1093.2002.02.025

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Fault diagnosis technique has become of vital importance in ensuring the reliability and safety for spacecrafts. Onboard fault diagnosis for spacecrafts can play a significant role in space automation and real-time diagnosis. Diagnosis mechanism onboard for sensor faults in spacecrafts must be set up to meet and enhance high reliability of onboard diagnosis system for spacecrafts. In this paper the technique characteris?tic of fault diagnosis onboard is analyzed，existing techniques of sensor validation are briefly introduced and analyzed, and a method of sensor validation onboard for spacecrafts through analytical redundancy is pre?sented .This method is based on a physical model. Some faults set in a testbed is diagnosed by the diagnostic system prototype developed by this method. So the method is verified and validated. The method can be used in engineering practice.

Dynamic Behaviors of Finite Journal Bearings Utilizing Linear and Nonlinear Oil-Film Force

Zhao Sanxing, Qin Ping, Xu Hua,Zhu Jun

2002, 23(2):  246-250.  doi:10.3969/j.issn.1000-1093.2002.02.026

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Equations of motion are adopted for the symmetrical rigid rotor-bearing system, and the non?linear oil-film force of finite journal bearings is calculated. The journalJ s transient trajectory is simulated with the fourth-rank Runge-Kutta method, and Newtonian iterative method is employed to gain the period?ic solutions of the system. The threshold speed based on the linear theory is given and its localization in sta?bility analysis is exhibited. Responses of unbalanced rotor are investigated with the linear and nonlinear methods respectively，and it has been found that the linear theory can be used only when the unbalanced ec?centricity is small.

Short Papers

A Prediction on the Dispersion Accuracy of the Gun-Vehicle System in Self-Propelled AAA on Fire

1:Ma Chunmao,Li KuiWu,Kang Xinzhong 2:Sun Fengchun

2002, 23(2):  251-254.  doi:10.3969/j.issn.1000-1093.2002.02.027

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The vehicle, gun, projectile and charge are taken as a system, and a basic principle has been presented in the paper, making use of the random-simulation technology based on the theory of interior bal?listics ,auto-mechanism, vibration of self-propelled gun system, initial disturbing and external ballistics et al. The principle is achieved by simulation of the movement procedure of the gun on fire and by predicting the dispersion accuracy on the target using the computer. Based on this is developed the predicting software about the dispersion accuracy of the gun-vehicle system in a self-propelled anti-aircraft gun on fire. Compar?ing the result from computer simulation with the data of actual firing，coincidence in their results demon?strates the principle to be of practical value. This method can be used in the study of dispersion accuracy of other varieties of guns and artillery, and is of referenced value.

A Method for the Detection of Precision of Random Fall Points

Zhang Shifeng, Xia Shengping, Jia Peiran

2002, 23(2):  255-257.  doi:10.3969/j.issn.1000-1093.2002.02.028

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A method of detecting the precision of random fall points is discussed in this paper. The prior probability is obtained according to prior information. Reasonable plans are then designed considering con?sumer s risk and producer’s risk. Ihe simulation results show the relations between the prior information and risks.

Experimental Techniques and Analysis

Projectile Tests from a Bomb Dispenser

1:Sun Xinli, Cai Xinghui, Wang Shaolong;2:Fan Wujie

2002, 23(2):  258-260.  doi:10.3969/j.issn.1000-1093.2002.02.029

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Projectile tests of a sub-ammunition model from a bomb dispenser cut loose into four sections have been done in the Laboratory. The principle and effect of the slinging and projectile device were stud?ied. Experimental devices and schemes were introduced in this paper. Many tests have been carried out. The process of action of the sub-ammunition and cutting cabin were recorded distinctly with high-speed video tape recorder and laser camera. The experimental results were handled and analyzed concisely. Veloc?ity of the sub-ammunition was obtained. It was shown that the gunpowder is in a state deflagration upon power detonation along the axis. It was also shown that the scheme is operable and the design seen to be reasonable. The result can be taken as a reference for further study of bomb dispenser.

Effects of Stationt'S Position Error on the Position Estimation of a Multistatic Radar System

Yu Xuefeng

2002, 23(2):  261-264.  doi:10.3969/j.issn.1000-1093.2002.02.030

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This paper deals with the aircraft 3-D position estimation errors resulting from station position surveillance errors of a multistatic radar system. The paper develops the appropriate general mathematical model for assessing the systematic error. Analyses have shown that the effect is a linear combination of the surveyed position errors of each station. The dominant contributor is the error of the master station loca?tion, consequently it must be very accurately surveyed.

A Computer Controlled Imitative Sealed Cabin with Multiple Environment Parameters

Lu Xiaojun ,Liu Xueguang, Wang Zhixuan ,Liang Jie, Sun Wei, Li Ming, Lu Chunchang

2002, 23(2):  265-269.  doi:10.3969/j.issn.1000-1093.2002.02.031

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An environmental imitation sealed cabin is suggested for use in zoonomy tests. Tests and con?trol means are taken into consideration for the temperature, humidity, pressure, oxygen concentration, C〇2 concentration, vibration and noise parameters. The multiple environment variables can be measured and controlled through the computer. Its regulation characteristics are steady and reliable.

Research Notes

Application of Sub-Model Method in the Strength Analysis of Engine Assembly Structure

Zou Wensheng, Zuo Zhengxing, Feng Huihua, Liao Ridong

2002, 23(2):  270-272.  doi:10.3969/j.issn.1000-1093.2002.02.032

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On the basis of studying the property of engine structural strength and the FEM analysis of the strength of engine assembly structure，strength ot key parts of the engine structures is analyzed with re?fined mesh by the sub-model method, and the errors are analyzed with the method of extrapolation. The example shows that the sub-model method can be used to analyze the strength of complex assembly struc?tures of the engine without constraints from normal hardware and software, arriving at satisfactory results. The sub-model method can be used broadly in the strength analysis of the complex assembly structures.

A Novel Driving Scheme for Self Powered Revolving Guns

Tang Yaming, Liao Zhenqiang, Wang Hui

2002, 23(2):  273-275.  doi:10.3969/j.issn.1000-1093.2002.02.033

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A new type of self driving scheme一jet gas driving for a Gatling gun is put forward. It is a new way to develop the self powered Gatling guns in which jet gas driving is made use of. A jet gas driving simulation model is established. Effects of various structural parameters upon the rotating speed can provide theoretical basis in tne optimization design. The results show that jet gas driving is a new and feasible prin?ciple and scheme.

Phase Transfer Catalyze the Oxidation of Hexabenzylhexaazaisowutzitane

Pang Siping, Yu Yongzhong, Zhao Xinqi

2002, 23(2):  276-278.  doi:10.3969/j.issn.1000-1093.2002.02.034

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Oxidation of hexabenzylhexaazaisowutzitane by potassium permanganate in acetic anhyaride/ DMF m the presence of phase transfer catalyst gives triacetylmonobenzoyldibenzyl hexaazaisowutzitane (5). The mechanism of the oxidation of N-benzyl group by potassium permanganate is discussed. It involves a one-electron transfer process and a two-electron transfer process.

Feature Extraction of Underwater Target signals Based on the Chaos Theory

Li Yaan,Xu Demin, Zhang Xiaomin

2002, 23(2):  279-281.  doi:10.3969/j.issn.1000-1093.2002.02.035

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Applying the chaos theory, feature extraction of underwater target signals is investigated. Us?ing Lyapunov exponents, better results in feature extraction of underwater target signals have been achieved. This may provide a novel theoretical means in detecting and recognizing underwater targets.

Thermal Residual Stress and Its Effects on Stress Distribution under Tensile and Compressive Loading in Short Fiber Reinforced Metal Matrix Composites

Ding Xiangdong, Lian Jianshe, Jiang Zhonghao

2002, 23(2):  282-285.  doi:10.3969/j.issn.1000-1093.2002.02.036

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Distribution of thermal residual stress and its effects on the stress distribution in the matrix ana fiber under tensile and compressive loadings of short fiber reinforced metal matrix composite are studied using the large strain two-dimension axisymmetric elastoplastic finite element method. It is demonstrated that the thermal residual stresses can result in asymmetrical stress distributions under tensile and compres?sive loadings. Thermal residual stresses tend to enhance the stress transfer in compression yet reduce the stress transfer in tension.

Realization of Genetic Algorithm in the Sequencing of Machining Operations and a Discussion of Relevant Problems

1:Zhang Weibo， Wang Longshan;2:Luo Hongyun

2002, 23(2):  286-288.  doi:10.3969/j.issn.1000-1093.2002.02.037

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Genetic algorithm is a method of global searching and optimization used in research work. In order to obtain an optimum or rational sequence of operations, genetic algorithm is used in determining the sequence of machining operations. In addition, several correlative questions related to this process are dis?cussed .