Zhou Youqing , Nie Guangqian , Zuo Chen Department of Electrical Engineering
Abstract:In this paper the rule for current variance of balance trans-former is studied according to the wiring type and operating characteristics.Based on the study, a new type of differential protection wiring is presented,and its operation principle as well as
Xiao Zhonghuai Department of Mechanical Engineering)
Abstract:We consider in this paper the rotative high kinematic pairmechanism consisted of a pair of contacting cylinders. The cause of the losingefficacy is analysed, the optimization question of the system parameter isproposed, and the dynamical principle is esta
Yang Liansheng Department of Mechanical Engineering
Abstract:This paper deals with the theory and practice of the thrus-tless dual connecting rod ICE, including: analysis of schemes, analysis of kine-matics, dynamicsand optimal balance. The advantages of the dual connectingrod ICE are proved by both practice and th
Huang Tienzeai , Chen Shunian Department of Mechanical Engineering Department of Engineering Mechanics
Abstract:Auto body engineering is the youngest and rapidly developedbranch in the auto industry. This article presents to readers about develo-pment, trend and the current situation of the auto body technique in theseveral aspects, such as the related area, CAD/CA
Chen Shunian , Peng Xian , Huang Tienzeai Department of Engineering Mechanics Department of Mechanical Engineering
Abstract:This paper presents the analysis, design program and experi-mental evaluation of automobile seat with positive and negative stiffnesselastic element. It shows that the application of negative stiffness elasticelement will provide a effective method of red
Zeng Liquan , Gao Wenjie , Yang Chuantai Department of Mechanical Engineering Department of Electrical Engineering Department of Mechanical Engineering
Abstract:According to the general principle of metrology, We have inthis paper given the definition of the measuring accuracy of the dynamometer.Based on the torque balance of dynamometer, we've analysed the factors thateffect the measuring accuracy, and proposed
Dong Chenggong , Zhu Guanhan , Zhu Li , Luo Xiaobing Department of Mechanical Engineering
Abstract:In this paper, some technical matters in the model test of 5~Tforklift are discussed. The authors present a method of using pressure--releasedtyres as supports to test the forklift in site and have obtained very good effectfor boundary simulation. The cho
Zhou Biesun , Xie Zhong , Yang Xinyi Department of Applied Physics Wafangdian Bearing Factory
Abstract:Using Mossbauer Spectra, it is certain that rolled materialsare in the tensile state, and that electron cloud density of sample nuclearincreases together with rolling rate. These facts prove that rolling can improveunevenness of materials effectively.
Li Jianming , Jin Jiucheng , Li Xueqian , Xia Zongyu Department of Mechanical Engineering Department of Applied Physics
Abstract:The structures, compositions and residual stresses of the surfaceaffected layers in huge railway bearing (197 726) have been analysed andinvestigated by microhardness, optical microscopy, x--ray diffraction (XRD),scanning electron microscopy (SEM), and Au
Jiang Ronghan , Qu Liangcai , Chen Zongmu , Lan Lingshu Department of Electrical Engineering Shenyang Transformer Research Institute
Abstract:Great interest has recently been aroused in applying thereliability theory to the electrical products analysis. In this paper FMEA(failure mode and effect analysis) technique is applied to increase thereliability of the instrument transformer operating at
Chen Zongmu , Jiang Ronghan , Qu Liangcai , Lan Lingshu Department of Electrical Engineering Shenyang Transformer Research Institute
Abstract:In this paper the life function and average failure rate of thehigh voltage potential transformer (HVPT) are found using the probabilityand statistics approach according to the inverstigation of operational site ofHVPT in China. These are useful for the r
Qu Liangcai , Jiang Ronghan , Chen Zongmu , Lan Lingshu Department of Electrical Engineering Shenyang Transformer Research Institute
Abstract:In this paper the developments of the fault mechanism study,fault diagnosis technology, constitution principle, structure type, insulatingmaterial, maintenance strategy and quality control of the high--voltageinstrumental transformers(HVIT)are analysed ar
Peng Jiehua , Lin Fei Department of Electrical Engineering
Abstract:In this paper, we present two basic rules to analyse nonlinearapplied circuits of the IC operational amplifier, and propose a fast method todraw a graph of the transfer characteristics of the circuits. Many relatedexamples are given.
Lai Lieen Department of Electrical Engineering
Abstract:This paper presents a new calculating method for differentialleakage reactance of the stator winding of the induction motor with a squirrel-cage in consideration of the damping effect of the rotor harmonics on thestator harmonics. This method is superier
Zheng Shunsheng Department of Electrical Engineering
Abstract:The main point in the microcomputer based carolimeter is thehigh accuracy measurement for the temperature rise. A series of advantagesfor the measuring with a quartz crystal is described in this paper. The com-parison between quarts in HP-2804A and that m
Zhao Sicheng , Wang Renhuang Department of Electrical Engineering
Abstract:The paper analysed the basic principle of controller with singlechip microcomputer used for shift--hood filters, and explained the features ofthe hardware and software for the control system.
Zeng Jitang Department of Electrical Engineering
Abstract:This paper describes a new instrument with digital readout. Itis based on a grating sensor and a microprocessor, especially designed formeasurement of displacement. A microprocessor is utilized to accomplish somefunctions with software. Microprocessor con
Xun Chunyang , Li Jingqian Department of Electrical Engineering
Abstract:This paper presents an expression for the optimum closed-looptransfer function of a phase--locked Loop (PLL) which estimates the phase of anunmodulated sinusoid corrupted by an additive random disturbance. This workhas treated in the conventional PLL theo
He Shangde , Ren Cuiying Department of Electrical Engineering
Abstract:In this paper we explain the characteristics and main pointsof design of homopolar tachogenerator, and give an example of using homo-polar tachogenerator for speed measurement. It shows that homopolar tach-ogenerator is a ideal speed measuring sensor of s