1Analysis of design and application technology for progressing cavity pump systemWANG Shi-jie, LU Bin-Bin, LI Qin121-125,1472Research on method of interference examination in NC programming for screw machined by disc milling toolCHEN Xin, FU Yu-sheng, SUN Xing-wei126-1293Data conversion in reverse engineering based on CMMLI Zeng-hua, ZHAO Yan, LI Xue-lin130-1334Nonlinear vibration of rotor system with pedestal loosenessLI Dian-qi, WEI Yin, JIANG Tong, JIN Ying-li134-1375Stress field simulation of ZA27 alloy casting with larger ratio of height to diameter during squeeze castLI Rong-de, HOU Jun, YU Qian, BAI Yan-hua, LI Chen-xi138-1426Effect of Mn and Fe element content proportion on microstructure of Al-Si-Fe alloysZHAO Shu-guo, YUAN Xiao-guang, ZHANG Wei-wei, ZHANG Wei-qiang, YU Hai-peng143-1477Study on fracture toughness of Al2O3/SiC nano-compositesWANG Shuang, SUN Tai-li, HAN Ya-ling, JIAO Yi-lai148-1508Microstructure and mechanical behavior of hot-extruded magnesium alloy AZ91LI Yuan-yuan, JI Hai-tao, SHEN Jian, HONG Cheng-miao, LI Feng, LIU Zheng151-1549Application of PLC in the Cu-Al pipe butt weldingZHANG Xi-chuan, LI Qi-dong, GUO Quan-ying, YAO Hong-jun155-15810Investigation of anti-high-frequency interference in PLC controlled plasma spraying equipmentQU Shen, WANG He-ying, ZHAO Chun-yuan159-16111Research and development of rare-earth permanent magnet machinesTANG Ren-yuan162-166,17012Application of REPMSM to water pump for variable frequency and speed operationSUN Shan-hua, CHEN Li-xiang, AN Zhong-liang, TANG Ren-yuan167-17013Sliding mode variable-structure control for a 1MW variable-speed adjustable-pitch wind energy conversion systemGUO Qing-ding, ZHAO Lin, GUO Hong-che171-174,18614Rotor position and speed estimation method of permanent magnet synchronous motor based on observerWANG Li-mei, TIAN Ming-xiu, ZHENG Jian-fen175-178,18615Decoupling control based on disturbance observer of linear induction motorHAN Yong-qiang, GUO Qing-ding, LIU De-jun179-18216Thrust control of linear motor driving magnetic suspension platform based on inverse controlLIU De-jun, GUO Qing-ding, WENG Xiu-hua183-18617CPLD-based method for producing SPWM control waveformsLIANG Zhong-hua, XIAO Dan, YANG Xia187-191,20418Research on active power filter with a neural network controllerLIU Xiao-hong, LIANG Zhong-hua, REN Min192-194,19919Modeling and simulation of PMSM system based on MatlabYANG Ping, MA Rui-qing, ZHANG Yun-an195-19920Study on approximate linearization and stabilization via state feedback for WMR math modelJIANG Yong, SUN Mao-xiang, DONG Zai-li200-204 