supported by Key Laboratory Open Fund of Ultra Precision Machining Technology of CAEP(KF13006);Research Fund for the Doctoral Program of Higher Education of China(20120191120022)
supported by the National Natural Science Foundation of China (U0634002 and 50725206);the National Basic Research Program of China (2003CB314701, 2007CB935501, 2010CB327703 and 2008- AA03A314),the Science and Technology Department of Guangdong Province, the Department of Information Industry of Guangdong Province, and the Science and Technology Department of Guangzhou City