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Journal of Jilin University(Engineering and Technology Edition)
ISSN 1671-5497
CN 22-1341/T
主 任:陈永杰
编 辑:张祥合 曹 敏  程仲基
    赵莹莹 赵浩宇
电 话:0431-85095297
E-mail:xbgxb@jlu.edu.cn
地 址:长春市吉林大学南岭校区
    逸夫教育大楼B823室
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Table of Content
25 January 2000, Volume 30 Issue 01
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paper
Objective Evaluation Index for Handling and Stability of Vehicle
ZONG Chang-fu, GUO Kong-hui
吉林大学学报(工学版). 2000, 30 (01):  1-6. 
Abstract ( 1931 )   PDF (1KB) ( 428 )  

An objective evaluation method and objective index for handling and stability of vehicle has been put forward by using theoretical analysis.The consistence of the closed loop objective evaluation index with subjective evaluation has been testified by using ADSL driving simulator.

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Driver Fuzzy Decision Model of Vehicle Preview Course
GAO Zhen-hai, GUAN Xin, GUO Kong-hui
吉林大学学报(工学版). 2000, 30 (01):  7-10. 
Abstract ( 1042 )   PDF (1KB) ( 262 )  

A fuzzy decision model of driver's decision making vehicle preview course is given.The model can simulate the driver's control behavior of deciding the vehicle preview course in the process of driver's handling the vehicle,based on the feasible region of front road.Taking advantage of fuzzy decision theory characteristics,the model can describe many decision criteria such as driving safety and driver's physical burden.The simulation results show that the model can also describe the driver decision behavior characteristics of optimal preview acceleration,and can be directly applied to the simulation of driver-vehicle-road closed-loop system.

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Reaserch on Inlet Swirl Ratio Influence of Direct Injection Turbulent Flow in Diesel Engine Cylinder
XU Si-chuan, ZHANG Jian-hua, SUN Ji-mei
吉林大学学报(工学版). 2000, 30 (01):  11-15. 
Abstract ( 1524 )   PDF (237KB) ( 552 )  

The turbulent flow characteristics in cylinders of direct injection diesel engine under different air swirl ratios are analyzed by multi dimensional simulation methods.The turbulent energy,the fluid field structure and the temperature distribution show significant differences with the changes of air swirl ratios.The effects of swirl ratio on turbulent energy,fluid structure and temperature distrbutions in cylinder are given in this paper.

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Study on the Cell of Combination Inner cell Corn Precision Seed metering Device
YU Jian-qun, MA Cheng-lin, YANG Hai-kuan, MA Xu
吉林大学学报(工学版). 2000, 30 (01):  16-20. 
Abstract ( 875 )   PDF (1KB) ( 269 )  

In this paper,a mechanistic corn precision seed metering device with step metering inner-cell,i.e.,combination inner-cell corn precision seed metering device is developed.The experiment results show that when the shapes and sizes of the filling hole and the step metering inner cell are properly taken,the seed metering device will satisfy the needs for precision planting different varieties of maize seeds,without seeds separation by size.

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ANN-based Fuzzy Prediction for Elastic Deformation of Cold and Precision Plastic Forming
FU Pei-fu, JING Wei-feng, LI Yi
吉林大学学报(工学版). 2000, 30 (01):  21-25. 
Abstract ( 1052 )   PDF (1KB) ( 295 )  

This paper studies the factors which influence elastic deformation for die design in cold and precision plastic forming,and puts forward a ANN-based prediction model of elastic deformation.The method uses more intelligent ANN model to realize the self correcting and memorizing of abstract fuzzy rules.The model corresponds to human studying process,represents empirical knowledge satisfactorily,and makes it clearer and easier to express complex relationship between input and output.

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A Finite Element Equation with Plane Strain Mindlin Curved Line Element and Its Application in Section Analysis
LI Da-yong, NA Jing-xin, CAO Ying, HU Ping
吉林大学学报(工学版). 2000, 30 (01):  26-30. 
Abstract ( 1025 )   PDF (1KB) ( 244 )  

Mindlin curved line element with bending effect is employed and elasto-plastic U.L.finite element formulation under plane strain condition is developed.The theory is applied to section analysis in sheet metal forming.Two benchmark test problems are calculated and the results are compared with experimental ones.Fine agreement is obtained.

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Optimization of the Three Parameters in Micro-hole Vibration Drilling Laminated Materials
ZHAO Hong-wei, LI Zi-jun, ZHANG Lin-bo, WANG Li-jiang
吉林大学学报(工学版). 2000, 30 (01):  31-34. 
Abstract ( 1258 )   PDF (1KB) ( 276 )  

Micro-hole drilling test of laminates is developed with electronic-controlled machine and the optimization of cutting parameters for various lamina of the material is carried out.New step three-parameter vibration drilling technological results used for laminates is proposed.The test demonstrates that the deflation of the drill point r,the error of the pore diameter Δ D ,the height of burrs H drilled by three parameter vibration drilling method are apparently reduced than that achieved by conventional drilling method.

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Study on Filter of Signal in Data Sampling System
JIN Ren-cheng, ZHAO Ji, WANG Li-jiang, ZHOU Yun-fei, LI Shui-jin
吉林大学学报(工学版). 2000, 30 (01):  35-38. 
Abstract ( 745 )   PDF (1KB) ( 253 )  

In this paper,a data sampling system is analyzed thoroughly in actual real applications.The signal is processed by simulated filter and digital filter.The experiment results indicate that the two kinds of filters are successful.The signal of the outside interference can be basically removed through the two kinds of filtering processes.

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A Compression Algorithm for Predictive Processing Based on WBS Coding and Block Coding
LIU Zi-liang, WANG Ke, ZHANG Xiao-xu, WANG Hang
吉林大学学报(工学版). 2000, 30 (01):  39-43. 
Abstract ( 953 )   PDF (1KB) ( 259 )  

In this paper,a new theory and a method for predictive processing based on two-valued image compressing are proposed and an algorithm based on mathematics for improving the efficiency of WBS coding and block coding of binary image is presented.The basic principle is to eliminate the black straight line sectors(vertical or horizontal) by preprocessing them before encoding.The compression ratio is then increased.

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Singular Value Perturbation and Its Application in Vibration Control of Intelligent Structures
CAO Zong-jie, SUN Chang-jiang, CHEN Su-huan
吉林大学学报(工学版). 2000, 30 (01):  44-47. 
Abstract ( 1400 )   PDF (192KB) ( 297 )  

A technique for determining optimal locations for actuators of intelligent structures is presented on the basis of the 1st order singular value perturbations of controllability.With this method the optimal placements of actuators of the intelligent structures can be selected and the impulse response of structures due to different locations of actuators with the same control law is analyzed.A numerical example is given to illustrate the applications of the method.

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Analysis on the Dynamic Behaviour of Drill Bit in Cutting
MU De-qiang, CHEN Su-huan
吉林大学学报(工学版). 2000, 30 (01):  48-52. 
Abstract ( 1536 )   PDF (1KB) ( 258 )  

In this paper,the influence of axle cutting force and torque on dynamic behaviour is researched in the process of drilling.The 3-D tetrahedron finite element equations for drill bit with complex section are derived.Finally,the influences of cutting load on dynamic behaviour of drill bit are given.

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A Weaker Condition of Combined Homotopy Interior Point Method for Solving Nonlinear Convex Programming
CHI Ya-jing, CHU Ming
吉林大学学报(工学版). 2000, 30 (01):  53-56. 
Abstract ( 1031 )   PDF (1KB) ( 269 )  

The problem for getting K-T point of nonlinear programming by combined homotopy interior point method under linearly independent constraint qualification is discussed at [1].This paper has proved that the conclusion at [1] is held without the condition of linearly independent when feasible field is a convex.

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Optimization Conditions and Duality Theory of Semiconvex Multiobjective Programming
LI Feng
吉林大学学报(工学版). 2000, 30 (01):  57-62. 
Abstract ( 961 )   PDF (1KB) ( 251 )  

This paper presents sufficient and necessary conditions of the efficient solution on semiconvex multiobjective programming and sufficient and necessary conditions of Lagrange Saddle Point. Based on these, the author analyses the duality of Lagrange Model.

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Construction of Another Cartesian Authentication Code from Odd Characteristic Orthogonal Geometry
LIU Wei-jiang, LIU Qing-huai, AN Yu-wei
吉林大学学报(工学版). 2000, 30 (01):  63-66. 
Abstract ( 1273 )   PDF (1KB) ( 250 )  

The construction of Cartesian authentication code from orthogonal geometry over finite field with characteristic not 2 is given in this paper.Its size parameters and its probabilities of successful impersonation attack and succssful substitution attack are also computed.

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The Transitivity Arise Some Sufficient Condition Which Sensitive Dependence on Initial Conditions and Chaos
GAO Yu-liang
吉林大学学报(工学版). 2000, 30 (01):  67-71. 
Abstract ( 962 )   PDF (1KB) ( 234 )  

In this paper,it is introduced that transitivity arise some sufficient condition which sensitive dependence on initial conditions and chaos.

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Study on Parameter Matching for Parallel Hybrid Electric Vehicle Powertrain
WANG Qing-nian, HE Hong-wen, LI You-de, CHU Liang
吉林大学学报(工学版). 2000, 30 (01):  72-75. 
Abstract ( 1188 )   PDF (1KB) ( 290 )  

Based on theoretical analysis,a parameter selection method on engine power,motor power and the final drive radio of a parallel Hybrid Electric Vehicle is presented in this paper and a practical example is also given.Finally,through simulation results the feasibility of this method has been validated.

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Study on the Method for Calculating Power Consumption of a New Type Mineral Sizer
ZHANG Jun-xia, ZHU Wen-nong
吉林大学学报(工学版). 2000, 30 (01):  76-78. 
Abstract ( 946 )   PDF (1KB) ( 249 )  

The new type mineral sizer possesses many distinctive advantages,but there is no perfect theory about it.This paper deduces the method for calculating power consumption of a new type mineral sizer from theoretical and experimental study.It offers reasonable and reliable theoretical foundation for the design and a series of developments of the new type mineral sizer.

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Micro Residual Stress of Fiber/Metal Composites and Behavior During Tensile
YU Si-rong, HE Zhen-ming
吉林大学学报(工学版). 2000, 30 (01):  79-82. 
Abstract ( 1012 )   PDF (184KB) ( 442 )  

On the basis of elastic mechanics theory,the micro residual stress expression of matrix around fiber in metal matrix composites is deduced.The effect of the micro residual stress on material properties during tensile is analyze.This theory mentioned above can be used to analyzed the mechanics behavior of composites.

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Experimental Study On Limit Cutting Depth by Optimal Controlling Spindle Speed
FU Lian-yu, Kajimbi J Paul, WANG Xiao-jun
吉林大学学报(工学版). 2000, 30 (01):  83-86. 
Abstract ( 1065 )   PDF (1KB) ( 261 )  

The limit cutting depth of the machining system with optimal controlling spindle speed is studied by experiments.The experimental set up and the experimental method are introduced.The results show that the limit cutting depth of the machining system with optimal controlling spindle speed is improved more greatly than that of uncontrolled system and the cutting efficiency of the machine tool can be improved on a large scale by spindle speed optimal control.

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Inherent and Operational Reliability of CNC Lathe
WANG Yan-wei, WEN Zaishan, SHEN Gui-xiang
吉林大学学报(工学版). 2000, 30 (01):  87-59. 
Abstract ( 1084 )   PDF (164KB) ( 755 )  

A reliability study of computer numerical control (CNC) lathes is described.The failure position and subsystem,failure mode and causes are analyzed to indicate the weak subsystem of a CNC lathe.Furthermore,the inherent and operational reliability of CNC lathe is analyzed in order to improve the reliability of CNC lathe.

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High Resolution Array (HRA) to 2-Dimensional DOA Estimation
LIU Ruo-lun, WANG Shu-xun
吉林大学学报(工学版). 2000, 30 (01):  90-94. 
Abstract ( 903 )   PDF (1KB) ( 278 )  

Based on the 2-D DOA estimation,the spatial filtering capability of the array antenna is studied.A high resolution array model(HRA) is proposed.The research results show that HRA has the highest spatial resolution.Simulations show that HRA yields better results than the traditional array.

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Performance Analysis of Signalling System in Integrated Service Digital Network
LI Zhen-hua, QIN Yan-you
吉林大学学报(工学版). 2000, 30 (01):  95-99. 
Abstract ( 768 )   PDF (1KB) ( 268 )  

Performance analysis of signalling system in integrated service digital network (ISDN) is a problem that remains to be solved.This paper provides a queuing network model and a method of performance analysis for signalling system of ISDN.With GPSS simulation,the method proves to be accurate.

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Research on Entropy Current and Information of Detecting System
SONG Wen-xu, ZHANG Xiu-mei
吉林大学学报(工学版). 2000, 30 (01):  100-102. 
Abstract ( 959 )   PDF (1KB) ( 262 )  

The entropy current of carrying information is derived recording to entropy information theory about the detecting system of specific transmission channel between the object measured and the observer.The system information current is given through negative entropy on information,therefore some important features are obtained on detecting system.Some faulty conclusions of energy information theory in the field are modified.The relationship among the energy,entropy and information is regulated.The new conclusion on detecting system is obtained that the energy current is the driving force of entropy current and the entropy current is the carrier of carring information.

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