[1] Omni-directional electric steerable wheels and robots and vehicles with the same omni-directional electric steerable wheels, invention patents, Li Chengyu, Liu Xiaoqing, Pan Zhongming, Jia Huibo, application number CN201711116464.9, publication number, CN108081946A

[2] Guoqing Xu, Kun Xu,“Slip Rate Detection Method and Detection System For Electric Vehicle”, China patent for invention, ZL201010562956.2.United States Patent, No.:US 8,909,411B2

[3] Peng Yang, Lei Li,GuoqingXu, “Power possibility predictive system and method of  photovoltaics ”,China patent for invention,ZL200910189031.5

[4] Guoqing Xu, Jun Gong, Yangshen Xu, Bo Zhu, Lingfei Yu, Yinzhou Shi, Quanjian Luo, “A method of control on embedded operating system for dock transport vehicle”,China patent for invention, ZL200810065283.2

[5] Linni Jian , Guoqing Xu, Yuanyuan Wu, Jianing Liang “Novel electric transmission system”,China patent for invention, CN102355120B

[6] Peng Yang, Lei Li, Guoqing Xu, “Prediction system and method of generating capacity of Solar photovoltaic battery”, China patent for invention, CN102103164B

[7] Guoqing Xu, Linni Jian, “Triple-side permanent magnet excited magnetic gear”,China patent for invention, CN10208248B

[8] Guoqing Xu, Li Liu, “Method and system for  detecting abnormal driving behavior in car”,China patent for invention, ZL 200910105794.7

[9] Guoqing Xu, Kun Xu and Weimin Li, “A Road Adaptive Torque Control System for Electric Vehicles” China patent for invention, CN101920704B,ZL201010237762.5