HUANG Yonggang , HUANG Maolin
2009, 32(5):481-487. DOI: 10.11835/j.issn.1000-582X.2009.05.001
Abstract:Based upon screw theory and set theory, and according to the constraint system between mobile platforms and limbs, the structural conditions of nonoverconstrained planar 2T1R parallel mechanisms are proposed. Six types of limb constraint patterns are fou
SHI Wankai , JIANG Hongwei , QIN Datong
2009, 32(5):487-493. DOI: 10.11835/j.issn.1000-582X.2009.05.002
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
YANG Yang , YANG Wenhui , YANG Yalian , QIN Datong
2009, 32(5):493-499. DOI: 10.11835/j.issn.1000-582X.2009.05.003
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
SONG Yuchuan , CHEN Xuehai , LEI Qi , LIU Fei
2009, 32(5):499-505. DOI: 10.11835/j.issn.1000-582X.2009.05.004
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
TANG Xianzhi , LIU Fei , LI Xuwu
2009, 32(5):505-512. DOI: 10.11835/j.issn.1000-582X.2009.05.005
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
XU Zhongming , HAO Weiya , ZHANG Zhifei , JIN Jie
2009, 32(5):512-516. DOI: 10.11835/j.issn.1000-582X.2009.05.006
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 vehiclesseat systemstrength regulation and te
2009, 32(5):516-524. DOI: 10.11835/j.issn.1000-582X.2009.05.007
Abstract:Antislip 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. Hillstart assist control (HAC) systems, the late
ZHANG Zhanlong , HUANG Danmei , ZHANG Binrong , HE Wei , TIAN Lin , WANG Quandi
2009, 32(5):524-528. DOI: 10.11835/j.issn.1000-582X.2009.05.008
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
TANG Ju , GONG Ningtao , LI Wei , ZHANG Xiaoxing , WEI Gang
2009, 32(5):528-535. DOI: 10.11835/j.issn.1000-582X.2009.05.009
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
HAN Li , XIN Mao , LUO Ciyong
2009, 32(5):535-539. DOI: 10.11835/j.issn.1000-582X.2009.05.010
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
YU Jihui , ZHOU Shanghua , WANG Quandi , LI Yongming
2009, 32(5):539-544. DOI: 10.11835/j.issn.1000-582X.2009.05.011
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
CHEN Kequan , YAN Bo , GUO Yueming , LIANG Ming , CHEN Jiang
2009, 32(5):544-550. DOI: 10.11835/j.issn.1000-582X.2009.05.012
Abstract:Numerical models of typical 500 kV ultrahigh voltage (UHV) transmission lines are set up in ABAQUS/CAE software. The dynamic response of the transmission lines with different structure parameters under various iceshedding load cases are analyzed, and th
SUN Haitao , LIU Dongyan , LIANG Yunpei , LI Rifu
2009, 32(5):550-556. DOI: 10.11835/j.issn.1000-582X.2009.05.013
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
WANG Hongtu , ZHOU Liming , HU Guozhong , LI Xiaohong , YUAN Zhigang
2009, 32(5):556-561. DOI: 10.11835/j.issn.1000-582X.2009.05.014
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
JIANG Deyi , ZHOU Lijun , REN Song , HOU Yabin , LI Fusheng
2009, 32(5):561-566. DOI: 10.11835/j.issn.1000-582X.2009.05.015
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 elasticplastic constitutive model and applied the MohrCoulomb yield cri
HUANG Gun , YIN Guangzhi , WANG Weizhong
2009, 32(5):566-572. DOI: 10.11835/j.issn.1000-582X.2009.05.016
Abstract:We present the development, fabrication and use of a new apparatus for testing rocklike 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
LU Yiyu , CHEN Lingyun , FENG Weiqiang , CHAI Bolong , ZHOU Dongping
2009, 32(5):572-577. DOI: 10.11835/j.issn.1000-582X.2009.05.017
Abstract:Boltshotcrete support and small pipe grouting technology are two important elements in the new Austrian tunneling method. We explore the application of boltshotcrete support and small pipe grouting technology in treating the Huanshanping Span Tunnel col
LIU Fang , ZHU Wei , WANG Guixue
2009, 32(5):577-582. DOI: 10.11835/j.issn.1000-582X.2009.05.018
Abstract:We investigate the effect of CO on the blood rheology parameters and blood gas composition. Experiments are conducted under isothermal toxicity gas concentration nonradioactive conditions. We use an exposure box 0.8 m long, 0.5 m wide, and 0.5 m high. CO
ZHU Deqing , LI Huimin , YU Wei , WANG Bin , PAN Jian
2009, 32(5):582-589. DOI: 10.11835/j.issn.1000-582X.2009.05.019
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
2009, 32(5):589-593. DOI: 10.11835/j.issn.1000-582X.2009.05.020
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
TIAN Hong , YANG Chen , LIAO Zhengzhu
2009, 32(5):593-598. DOI: 10.11835/j.issn.1000-582X.2009.05.021
Abstract:To use lowcalorie 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
PU Ge , WANG Jiong , ZHANG Li
2009, 32(5):598-604. DOI: 10.11835/j.issn.1000-582X.2009.05.022
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
LONG Enshen , ZHOU Jie , CHEH Jinhua
2009, 32(5):604-609. DOI: 10.11835/j.issn.1000-582X.2009.05.023
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