Volume 16,Issue 6,1993 Table of Contents

1 A Study on Human Simulation Intelligent Control Algorithm to a Category of Objects

1993, 16(6):8-15.

[Abstract](664) [HTML](0) [PDF 350.92 K](142)

Abstract:
Based on the model of Human Simulation Intelligent Controller (HSIC) presented briefly, a detailed algorithm was described for the servo system control by using the method of HSIC. Simulation results obtained proves the good performance of the control algorithm.

2 A Fuzzy Regression Method for Long-Term and Medium-Term Load Forecasting

Sun Hongbo Xu Guoyu Qin Yihong

1993, 16(6):16-20.

[Abstract](610) [HTML](0) [PDF 215.94 K](104)

Abstract:
In view of the observation data fuzziness and load pattern fuzziness,a new fuzzy regression prediction method was presented for long-term and medium-term load forecasting. With the established fuzzy regression model, the future load value can be forecasted based on the fuzzy historical observation data. The validity of the proposed method was verified with the numerical example of a practical system.

3 A New Monte Carlo Method Based on State Analysis

Ran Li Ren Zhen Huang Wenying

1993, 16(6):21-26.

[Abstract](575) [HTML](0) [PDF 297.75 K](269)

Abstract:
A new Monte Carlo Method for system reliability evaluation is proposed in this paper. The repeated sampling of system states with relatively great probabilities is avoided in the simulation,thus the sampling efficiency is significantly improved. Besides,the negative correlations used in different trials can further reduce the estimated varinaces. The sparse matrix technique is employed to reduce the memory requirement and to save the computer time. Comparative studies show that the method proposed is of great value and the application to the IEEE reliability test system (power system) is successful.

4 An Analysis of the Loop Performance of the PLL-FM

Tang Chaowei Yang Shizhong

1993, 16(6):27-31.

[Abstract](715) [HTML](0) [PDF 193.65 K](189)

Abstract:
Analyzing the responses of three kinds of PLL-FM ways and their stabilities. The analyses have shown that the circuits of these PLL-FMs show Low-pass property in the input phase,and have different characteristics to modulation signals in accordance with different ways of PLL-FM.

5 An Improved Method of the Transient Waveform Analysis in Power Systems

Wang Jianping Mi Linshu Chen Gang

1993, 16(6):32-37.

[Abstract](662) [HTML](0) [PDF 228.80 K](155)

Abstract:
The angular frequency and decaying constant of each copmonect for the transient waveform in power systems were obtained by using the discrete Fourier transform; the amplitude and phase angle were calculated in the linear curve fitting method. And all of the parameters obtained above were treated in an unified optimization by using the curve fitting optimization of the least square method of general nonlinear funcrion so as to get the results of waveform analysis. Two examples are included.

6 Improvements on the Boundary Element Method( I )

Yang Shouyi Tan Bangding

1993, 16(6):38-45.

[Abstract](443) [HTML](0) [PDF 276.35 K](146)

Abstract:
This paper presents an improved BEM, which is free of singular integrals and corner problems. The numerical accuracy is also efficiently improved by this method.

7 A Thermodynamic Criteria for Evaluation of Heat Exchanger Performance

Li Yourong Jin Mingcong Tang Jingwen

1993, 16(6):46-50.

[Abstract](682) [HTML](0) [PDF 221.28 K](159)

Abstract:
The concept of loss rate of available energy was introduced for evaluating heat exchanger performance. At the same time, the general expression of loss rate of available energy was obtained for heat exchangers of several typical. And NL criteria was recommended for evaluation of the loss rate of available energy of heat exchanger. Then. the influences of inlet temperatures ratio, heat capacity ratio of fluids, the number of heat transfer units and flow patterns of heat exchanger on ,VL criteria were also discussed.

8 A Study of the Vertical Vibration of the 4200 Thick Plate Rolling Mills

Zhu Caicao Wang Hongen Gong JianxiaoYu Shixing

1993, 16(6):51-57.

[Abstract](491) [HTML](0) [PDF 293.17 K](131)

Abstract:
In this paper,the mill stand and the rolled piece were studied as a system. Based on the disoreted masses and the deformation of bending curve of the roller and roll housing, according to Rayleigh method,the equivalent mass and and the equivalent stiffness of the mode were solved,and set up a multiple degree of freedom vibration dynamic model. And also did theoretical analysis and calculation with an exapmle of the 4200 thick plate rolling mills.

9 A Study on the FMS Planning and Scheduling System

Hu Lide Yang Dan Wang Shilong

1993, 16(6):58-64.

[Abstract](724) [HTML](0) [PDF 462.45 K](157)

Abstract:
After researching the function requirements of the planning and scheduling in manufacturing cells, the paper advanced a control structure with three phases, i. e. planning , scheduling and dispatching. The paper represented in detail the main purposes, requirements and scheduling actions in each phase. It suits to general machining FMSs.

10 Development of the Computer-Aided Design Subsystem

Ren Guangsheng Xu Xiangsui Tao Yu

1993, 16(6):65-69.

[Abstract](560) [HTML](0) [PDF 214.31 K](143)

Abstract:
The paper mainly covers the research work of the CAD subsystem. In this subsystem, the menus with icons are used to describe the construction shape, and 2D primitives are pieced together to compose the part to be designed. By using the internal code and building the internal code file to store optimal part constructions, the standardization and rationalization for part design could be achieved.

11 Full Microcomputerized Testing and Analysing System for Transmission Error

Peng Donglin Zhang Guanghui Guo Shongtao Guo Xiaodong

1993, 16(6):70-74.

[Abstract](483) [HTML](0) [PDF 267.59 K](978)

Abstract:
The principles of a new transmission error testing and analysing system was introduced,a new method for pulse signal subdivision by a microcomputer was described.

12 The on-Line Identifying Method for the Dynamic Unbalance of the Rigid Rotator

Tang Yike Gu Qiankun

1993, 16(6):75-78.

[Abstract](579) [HTML](0) [PDF 210.88 K](1671)

Abstract:
The basic principles of the on-line identifying method for the dynamic unbalance of rigid rotators were discussed. The influent coefficient matrix was proposed to calculate the unbalance,and the matrix elements were obtained by adding the trial weight. The identifying accuracy was verified by simulation tests. Finally, discussed the schemes of the software and hardware of the on-line identification.

13 A Delay Model and Simulation Studies for None-Signaller Intersections

Zhang Bangli Liu Yiwu Cao ChangxiuHe Haizhong Wang Tinghua Jiang Shanbao Yuan Shiaoyan

1993, 16(6):79-86.

[Abstract](618) [HTML](0) [PDF 319.16 K](1301)

Abstract:
A model based on Queueing Theory was developed for calculating the average queueing delays and the capacities of intersections. And the turning flows influences on the delay were analysed,the simulation results were presented in the article.

14 The Computation of Long-sequence Walsh-Hadamard Transforms via a Variable-size Short-sequence WHT Chip

Zhou Liuding Cheng Daijie Zou Hua

1993, 16(6):87-92.

[Abstract](611) [HTML](0) [PDF 273.13 K](1021)

Abstract:
提出了能够将任一长序列变换有效地分解为一组定长的短序列变换的方法及算法，通过用短序列芯片计算这些短序列变换，从而可高速完成任意长序列的变换。

15 Parallel Architectures of the ASIC for Walsh-Hadamard Transform

Zhou Liuding Cheng Daijie Zou Hua

1993, 16(6):93-99.

[Abstract](836) [HTML](0) [PDF 328.09 K](1106)

Abstract:
The design of ASIC (Application-specified Integrated Circuit) has been recently paid a lot of attention to by scholars. In this paper,investigation was made in some respects related with the design of the ASIC for Walsh-Hadamard transform (WHT). These respects include the desing of the dedicated algorithma and their SFGs(Signal Flow Graphs),the design of the VLSI array, bit-string computation, and variable-size function. At the end, resonable VLSI array architecture was presented for the WHT ASIC.

16 A comparison between 55CrSiA and JIS G3566-77 Oil Tempered Spring Steel Wires

Li Yuanrui Chen Yuan Zhou Zheng

1993, 16(6):100-104.

[Abstract](900) [HTML](0) [PDF 267.58 K](1852)

Abstract:
The qualities of 55CrSiA oil tempered spring steel wire and not as good as that of JIS G3566-77. This conclusion resulted from the comparative tests which were for the valve springs of FM147 Engine being seperately made of the two kinds of spring steel wires mentioned above acording to the same processing and test methods.

17 Preliminary Study on Laser Property Improving for Boronized Layer

Tan Jifu Feng Zhigang Han Zhifan

1993, 16(6):105-108.

[Abstract](578) [HTML](0) [PDF 273.44 K](974)

Abstract:
The effects of laser treatment on morphology of Boronized Layer of 20CrNiMo steel are studied in this paper. And laser property improving on the layer are initially discussed. The research indicates that laser treatment will change its morphology, increase thinkness and reduce brittleness of the layer, without reducing hardness and wear resistance.

18 The Energy Analysis for High Strain Low Cycle Fatigue

Sheng Guangmin Gong Shihong Peng Kan

1993, 16(6):109-113.

[Abstract](766) [HTML](0) [PDF 198.54 K](1179)

Abstract:
从疲劳过程中材料吸收的总应变能和每次循环的应力应变滞后环出发，推出了形如Ｃｏｆｆｉｎ－Ｍａｎｓｏｎ公式和Ｂａｓｑｕｉｎ公式的寿命预测表达式。实验验证结果表明，在高应变低寿命区，理论与实测的△εｐ－２Ｎｆ曲线相吻合。

19 The Study of Outburst-proneness of Coal Seam Via Experiments and fuzzy Comprehensive Judgement

Jin Liping Xian xuefu

1993, 16(6):114-119.

[Abstract](414) [HTML](0) [PDF 297.38 K](1177)

Abstract:
The four existing autburst-proneness indexes and a modified outburst energy index W were applied to study outburst-proneness of coal seam via exprements; the fuzzy mathematics method was used for fuzzy comprehensive judgement on outburst-proneness of coal seam;the results obtained in experiments were identical with engineering practice.

20 A Solution of 1-Factors and 1-Factorial Connections of a Digraph

Tang Zhide Cheng Kaiming

1993, 16(6):130-133.

[Abstract](627) [HTML](0) [PDF 159.52 K](212)

Abstract:
One can get the digital solutions and the symbolic solutions of linear circuits in the same time by using coates graph. However, the practicability of the method depends on the effeciency of generation of 1-factors and 1-factorial connections. Based on the way of depth first searching,an algorithm was presented here for solving all 1-factors and 1-factorial connections. And a proctical programm has been compiled.

21 A Mininum Ring-band Mathematical Definition, Numerical Algorithm

Xie Ming Guo Xiaoyu Wang Yanchun

1993, 16(6):134-137.

[Abstract](559) [HTML](0) [PDF 195.22 K](133)

Abstract:
A minimum ring-band mathematical definition :In the done ring-band, there are at least two inner points and two outer points which scatter staggeringly on the circumference. With this definition as the rule of searching calculation' s ending,a fast numerical algorithm of gaining the minimum ring-band of a closed curve was suggested:Make a ring-band with the four points scattered staggeringly,then replace the old points with new ones continuously until all the points are located within the ring-band. The method was used in an application example to measure the spindle rotating precision of machine tools.

22 The Development in Finish Machining of Hardened Gear

Yan YongTang Zilin

1993, 16(6):138-143.

[Abstract](589) [HTML](0) [PDF 361.28 K](398)

Abstract:
This article summeried the methtods in finish machining of hardened gear and mainly introduced the development of the form grinding technique in grinding wheel dressing and grinding technology. The technique, which makes use of CBN tools, of hardened gear finish machining is also briefed.

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