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Articles by Ming Cong
Total Records ( 2 ) for Ming Cong
  Ming Cong , Yingha Wu , Dong Liu , Yu Du , Haiying Wen and Junfa Yu
  In order to improve control performance and eliminate steady, a coupling compensation for 6-DOF parallel robot is presented. Taking dynamic load Tank Simulator as the research object, this study analyzes the coupling of 6-DOC parallel robot considering the degree of freedom of the 6-DOF parallel robot. The coupling angle and coupling velocity are derived based on inverse kinematics model. The performance revolving stability, accuracy and robustness of the proposed coupling compensation control scheme for 6-DOF parallel robot is analysed in theory and computer simulation. These simulations show that the coupling compensation can improve the control performance and eliminate the steady state errors of tank simulator.
  Ming Cong , Xiangji Kong , Yu Du and Jing Liu
  Wafer pre-alignment is one of the most difficult and important part in wafer transmitting system. The key point of alignment is the position identification and information process. It is explored in this paper to use a new algorithm of vision information processing to obtain the special area of wafer edge and then concentrate to some feature points of wafer by which the wafer can be located. The basis principle of algorithm is to integrate least squares regression fitting, weighted means and compromise of wavelet coefficient method together in vision part. Also a new mechanical structure and vision system has been established to process the data and locate wafer. Experimental test is given showing that the system can carry out the alignment of wafer well and accurately by using the proposed algorithm and structure.
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