In electronics packaging the time-pressure dispensing system is widely usedto squeeze the adhesive fluid in a syringe onto boards or substrates with the pressurized air.However, complexity of the process, which includ...In electronics packaging the time-pressure dispensing system is widely usedto squeeze the adhesive fluid in a syringe onto boards or substrates with the pressurized air.However, complexity of the process, which includes the air-fluid coupling and the nonlinearuncertainties, makes it difficult to have a consistent process performance. An integrated dispensingprocess model is first introduced and then its input-output regression relationship is used todesign a run to run control methodology for this process. The controller takes EWMA scheme and itsstability region is given. Experimental results verify the effectiveness of the proposed run to runcontrol method for dispensing process.展开更多
The fast and accurate collision detection and distance calculation between geometric models is fundamen-tal in robotics, manufacturing and computer-simulated en-vironments. This paper surveys the state of the art in t...The fast and accurate collision detection and distance calculation between geometric models is fundamen-tal in robotics, manufacturing and computer-simulated en-vironments. This paper surveys the state of the art in the theory and algorithms of distance and pseudo distance func-tions between convex sets. An overview on the existing results, including fast algorithms for distance calculation, definitions and properties of various pseudo distance functions (the J-function, the growth distance, and the pseudo minimum translational distance), is presented. The distance and pseudo distance functions are versatile in a wide range of areas. Their applications in robot motion planning, grasp analy-sis/synthesis, form error evaluation, and engineering optimi-zation is demonstrated.展开更多
基金This project is supported by National Natural Science Foundation of China (No.50390063, 50390064), Research Grant Council of HK SAR (CityU1086/01E)and City University of HK Applied R&D Project(No.9620002).
文摘In electronics packaging the time-pressure dispensing system is widely usedto squeeze the adhesive fluid in a syringe onto boards or substrates with the pressurized air.However, complexity of the process, which includes the air-fluid coupling and the nonlinearuncertainties, makes it difficult to have a consistent process performance. An integrated dispensingprocess model is first introduced and then its input-output regression relationship is used todesign a run to run control methodology for this process. The controller takes EWMA scheme and itsstability region is given. Experimental results verify the effectiveness of the proposed run to runcontrol method for dispensing process.
基金supported by the National Natural Science Foundation of China(Grant Nos.50175014,50390063 and 59990470).
文摘The fast and accurate collision detection and distance calculation between geometric models is fundamen-tal in robotics, manufacturing and computer-simulated en-vironments. This paper surveys the state of the art in the theory and algorithms of distance and pseudo distance func-tions between convex sets. An overview on the existing results, including fast algorithms for distance calculation, definitions and properties of various pseudo distance functions (the J-function, the growth distance, and the pseudo minimum translational distance), is presented. The distance and pseudo distance functions are versatile in a wide range of areas. Their applications in robot motion planning, grasp analy-sis/synthesis, form error evaluation, and engineering optimi-zation is demonstrated.
