Volume 32,Issue 5,2009 Table of Contents

1 Synthesis of planar 2T1R nonoverconstrained parallel mechanisms

HUANG Yonggang , HUANG Maolin

2009, 32(5):481-487. DOI: 10.11835/j.issn.1000-582X.2009.05.001

[Abstract](1665) [HTML](0) [PDF 1.30 M](1531)

Abstract:
Based upon screw theory and set theory, and according to the constraint system between mobile platforms and limbs, the structural conditions of nonoverconstrained planar 2T1R parallel mechanisms are proposed. Six types of limb constraint patterns are fou

2 Simulation of a steady temperature field and analysis of factors affecting a worm gear

SHI Wankai , JIANG Hongwei , QIN Datong

2009, 32(5):487-493. DOI: 10.11835/j.issn.1000-582X.2009.05.002

[Abstract](1951) [HTML](0) [PDF 2.27 M](1588)

Abstract:
To obtain the distribution characteristic of the temperature on the surface of worm gear, a numerical simulation using heat transfer theory, tribology theory, and mesh theory is given to calculate the heat transfer coefficient and heat flux of rolling gea

3 Coordinated pressure control of a regenerative braking system based on a hybrid electric vehicle with an integrated startor and generator

YANG Yang , YANG Wenhui , YANG Yalian , QIN Datong

2009, 32(5):493-499. DOI: 10.11835/j.issn.1000-582X.2009.05.003

[Abstract](1532) [HTML](0) [PDF 4.29 M](964)

Abstract:
With a focus on a Changan hybrid electric vehicle (HEV) with an integrated startor and generator (ISG), strategies for braking force distribution and coordinated pressure control are put forward, and a dynamic braking control model is constructed for off

4 A type of cluster mode of networked manufacturing platforms

SONG Yuchuan , CHEN Xuehai , LEI Qi , LIU Fei

2009, 32(5):499-505. DOI: 10.11835/j.issn.1000-582X.2009.05.004

[Abstract](1607) [HTML](0) [PDF 3.35 M](899)

Abstract:
A type of cluster mode of networked platforms is advanced to integrate distributed networked platforms so as to optimize the distributed resources used. The cluster architecture is established. The integration framework and main supporting technology conc

5 A networked sharing application system for reverse engineering

TANG Xianzhi , LIU Fei , LI Xuwu

2009, 32(5):505-512. DOI: 10.11835/j.issn.1000-582X.2009.05.005

[Abstract](3098) [HTML](0) [PDF 4.11 M](1108)

Abstract:
A networked sharing application system for reverse engineering is proposed. It is targeted at a wide distribution of small and medium manufacturing enterprises and the technology complexity of reverse product design. Making full use of modern information

6 Analyses on stress tensor and crashworthiness simulation of an automobile seat

XU Zhongming , HAO Weiya , ZHANG Zhifei , JIN Jie

2009, 32(5):512-516. DOI: 10.11835/j.issn.1000-582X.2009.05.006

[Abstract](1824) [HTML](0) [PDF 2.92 M](1767)

Abstract:
A finite element model of an automobile seat structure is established using Hypermesh. The statics and dynamics of the seat structure are performed through simulation based on GB 15083—1994, which is a motor vehiclesseat systemstrength regulation and te

7 Simulation of an adaptive antislip regulation/hillstart assist control system

ZHANG Jingliang , GUO Fen

2009, 32(5):516-524. DOI: 10.11835/j.issn.1000-582X.2009.05.007

[Abstract](1615) [HTML](0) [PDF 4.14 M](1113)

Abstract:
Antislip regulation (ASR) systems can maintain the slip rate within a certain range when a vehicle accelerates on low adhesive road surfaces and thus prevent the drive wheels from rotating uncontrollably. Hillstart assist control (HAC) systems, the late

8 An application for detecting faulty insulators based on an inverse problem in local electrical fields

ZHANG Zhanlong , HUANG Danmei , ZHANG Binrong , HE Wei , TIAN Lin , WANG Quandi

2009, 32(5):524-528. DOI: 10.11835/j.issn.1000-582X.2009.05.008

[Abstract](1221) [HTML](0) [PDF 2.10 M](342)

Abstract:
An optimal computing model for detecting poor insulators has been developed based on an inverse problem in local electrical fields. The model takes into consideration the fact that electrical field measurement for insulators requires measuring many points

9 Characteristic analysis of partial discharge in highvoltage XLPE cable accessories

TANG Ju , GONG Ningtao , LI Wei , ZHANG Xiaoxing , WEI Gang

2009, 32(5):528-535. DOI: 10.11835/j.issn.1000-582X.2009.05.009

[Abstract](1775) [HTML](0) [PDF 4.46 M](346)

Abstract:
Four physical models of typical internal insulation defects in 110 kV cable joints are designed and a test platform for partial discharge (PD) research on cable accessories also is constructed. Based on the models, plenty of PD data are obtained for vario

10 Design of permanent magnet direct current motors based on a particle swarm optimization algorithm

HAN Li , XIN Mao , LUO Ciyong

2009, 32(5):535-539. DOI: 10.11835/j.issn.1000-582X.2009.05.010

[Abstract](1658) [HTML](0) [PDF 1.16 M](249)

Abstract:
We introduce a particle swarm optimization (PSO) algorithm and verified it using the Shubert function. The PSO algorithm is applied to design optimization of permanent magnet DC motors (PMDCMs). The optimal objects, decision variables and restricted condi

11 Modeling and simulation of the conducted electromagnetic interference for permanent magnet direct current motors

YU Jihui , ZHOU Shanghua , WANG Quandi , LI Yongming

2009, 32(5):539-544. DOI: 10.11835/j.issn.1000-582X.2009.05.011

[Abstract](1653) [HTML](0) [PDF 2.68 M](329)

Abstract:
A simulation model for evaluation of conducted electromagnetic interference(EMI) is developed based on analysis of the mechanism giving rise to conducted EMI. The simulation model includes high frequency effects associated with stray distributed parameter

12 Dynamic responses of ultrahigh voltage transmission line ice shedding

CHEN Kequan , YAN Bo , GUO Yueming , LIANG Ming , CHEN Jiang

2009, 32(5):544-550. DOI: 10.11835/j.issn.1000-582X.2009.05.012

[Abstract](1399) [HTML](0) [PDF 3.89 M](322)

Abstract:
Numerical models of typical 500 kV ultrahigh voltage (UHV) transmission lines are set up in ABAQUS/CAE software. The dynamic response of the transmission lines with different structure parameters under various iceshedding load cases are analyzed, and th

13 Key rock strata effecting analysis on surface boreholeshear deformation fracture

SUN Haitao , LIU Dongyan , LIANG Yunpei , LI Rifu

2009, 32(5):550-556. DOI: 10.11835/j.issn.1000-582X.2009.05.013

[Abstract](1471) [HTML](0) [PDF 3.17 M](301)

Abstract:
A good method for creating a surface borehole for withdrawing coal strata methane is to build before excavation and use during the whole process. But the excavation greatly affects the overlying rock strata, and when the excavation face passes through the

14 Fire and explosion hazard analysis of the urea synthesisproduction process

WANG Hongtu , ZHOU Liming , ＨU Guozhong , LI Xiaohong , YUAN Zhigang

2009, 32(5):556-561. DOI: 10.11835/j.issn.1000-582X.2009.05.014

[Abstract](1949) [HTML](0) [PDF 1.07 M](560)

Abstract:
On the basis of identifying and analyzing harmful risk factors in the urea synthesis production process of a factory, the production process is assessed and analyzed using the Dow chemical company fire and explosion index method. The related indexes are f

15 A finite difference method simulation for stability of buildingslopes in urban areas

JIANG Deyi , ZHOU Lijun , REN Song , HOU Yabin , LI Fusheng

2009, 32(5):561-566. DOI: 10.11835/j.issn.1000-582X.2009.05.015

[Abstract](1434) [HTML](0) [PDF 2.23 M](362)

Abstract:
We simulate the stress, displacement and the stability of an urban building under load on the top of a slope during different excavation stages. Our research is based on a perfectly elasticplastic constitutive model and applied the MohrCoulomb yield cri

16 Development and application of a new plain strain apparatusfor testing rocklike materials

HUANG Gun , YIN Guangzhi , WANG Weizhong

2009, 32(5):566-572. DOI: 10.11835/j.issn.1000-582X.2009.05.016

[Abstract](1510) [HTML](0) [PDF 2.33 M](283)

Abstract:
We present the development, fabrication and use of a new apparatus for testing rocklike material in plain strain stat. A major feature of the plain strain apparatus is the confining pressure applied in the pressure vessel rated to 20 MPa. The rectangular

17 Boltshotcrete support and small pipe groutingtechnology used in treating tunnel collapse

LU Yiyu , CHEN Lingyun , FENG Weiqiang , CHAI Bolong , ZHOU Dongping

2009, 32(5):572-577. DOI: 10.11835/j.issn.1000-582X.2009.05.017

[Abstract](1722) [HTML](0) [PDF 1.07 M](507)

Abstract:
Boltshotcrete support and small pipe grouting technology are two important elements in the new Austrian tunneling method. We explore the application of boltshotcrete support and small pipe grouting technology in treating the Huanshanping Span Tunnel col

18 Biological toxicity effect of CO in fire smoke

LIU Fang , ZHU Wei , WANG Guixue

2009, 32(5):577-582. DOI: 10.11835/j.issn.1000-582X.2009.05.018

[Abstract](2239) [HTML](0) [PDF 1.04 M](1028)

Abstract:
We investigate the effect of CO on the blood rheology parameters and blood gas composition. Experiments are conducted under isothermal toxicity gas concentration nonradioactive conditions. We use an exposure box 0.8 m long, 0.5 m wide, and 0.5 m high. CO

19 An organic activated bentonite mechanism for improving pelletization

ZHU Deqing , LI Huimin , YU Wei , WANG Bin , PAN Jian

2009, 32(5):582-589. DOI: 10.11835/j.issn.1000-582X.2009.05.019

[Abstract](1932) [HTML](0) [PDF 1.91 M](1288)

Abstract:
Adding organic activated bentonite to palletizing production improves the thermal stability of green balls and the iron grade of fired pellets. This addition also permits a reduction in the bentonite dosage. We study the action mechanism of the organic

20 An optimization algorithm for calculating the critical parametersof multicomponent mixture refrigerants

WANG Huitao , WANG Hua

2009, 32(5):589-593. DOI: 10.11835/j.issn.1000-582X.2009.05.020

[Abstract](1460) [HTML](0) [PDF 1.03 M](1857)

Abstract:
Aiming to calculate the true critical parameters of refrigerant mixtures, the Helmholtz free energy stability criterion for thermal systems is adopted to establish a calculation thermodynamic model of the true critical parameters. A novel optimization alg

21 Combustion characteristics and design analysis of a large circulatingfluidized bed boiler for Maoming oil shale

TIAN Hong  , YANG Chen , LIAO Zhengzhu

2009, 32(5):593-598. DOI: 10.11835/j.issn.1000-582X.2009.05.021

[Abstract](1931) [HTML](0) [PDF 1.09 M](1194)

Abstract:
To use lowcalorie fuel oil shale efficiently, a thermogravimetric analysis experiment of Maoming oil shale is performed using the ZRY2P synthetic thermal analytical instrument. Combustion characteristics are analyzed, and the combustion characteristic

22 Combustion characteristics of combustible of municipal solid wasteanalyzed by thermogravimetry

PU Ge , WANG Jiong , ZHANG Li

2009, 32(5):598-604. DOI: 10.11835/j.issn.1000-582X.2009.05.022

[Abstract](1932) [HTML](0) [PDF 1.16 M](1684)

Abstract:
We analyze the combustion characteristics of single component samples and mixed samples of municipal solid waste (MSW) using thermogravimetry. The ignition temperature, burnout temperature and comprehensive combustion characteristic parameters are obtaine

23 Flash pyrolysis liquefaction of biomass

LONG Enshen  , ZHOU Jie , CHEH Jinhua

2009, 32(5):604-609. DOI: 10.11835/j.issn.1000-582X.2009.05.023

[Abstract](1760) [HTML](0) [PDF 1.42 M](1722)

Abstract:
Experiments are conducted using an integrative biomass pyrolysis liquefaction installation to extract liquid fuel via a fast pyrolysis of biomass. With several representative biomasses being used as raw materials, we investigate ways to affect the pyrolys

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