Photocatalytic production of hydrogen peroxide (H2O2) represents a clean and sustainable method to produce H2O2 in recent years. Although this vision is very appealing, the development of high - performance catalysts ...
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In order to enhance openness and flexibility of industrial robot controlsystem, an open controlsystem based on double-CPU was designed. An embedded industrial computer based on 86 CPU with Windows XP worked as the u...
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This paper proposes a novel architecture of the numericalcontrol (NC) system based on multiprocessor and real-time Ethernet. To comply with the trend of modular, open framework NC system, the hardware architecture is...
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This paper proposes a better way for industrial robots to avoid collisions while manipulating objects. The method uses the Oriented Bounding Boxes (OBB) theory. OBB is effective because it can work with objects turned...
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This article studies a third-order trajectory planning method for point-to-point *** available instances for third-order trajectory planning are first *** distinguish those,three criteria are presented relying on traj...
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This article studies a third-order trajectory planning method for point-to-point *** available instances for third-order trajectory planning are first *** distinguish those,three criteria are presented relying on trajectory *** that,a fast preprocessing approach considering the trajectory as a whole is given based on the criteria constructed and system ***,the time-optimality of the trajectory is *** relevant formulas are derived with the combination of geometrical symmetry of trajectory and area *** a result,an accurate algorithm and its implementation procedure are *** experimental results show the effectiveness and precision of the proposed *** presented algorithm has been applied in semiconductor manufacturing equipment successfully.
Aimed for the real-time requirement of Ethernet in embedded system, an Agent-based system was presented. There were one managing node and a lot of control nodes in this new system. In order to reduce the real-time dec...
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ISBN:
(纸本)0780397215
Aimed for the real-time requirement of Ethernet in embedded system, an Agent-based system was presented. There were one managing node and a lot of control nodes in this new system. In order to reduce the real-time decline resulting from channel conflict, every control node was assigned a default priority and the control nodes with the same priority formed a group. Every control node communicated with each other and managing node based on the priority groups they belonged to. Master Agent in managing node received different status data from every Sub Agent in the control nodes in different cycles. A dynamic adjustment model was set up in Master Agent. The status data gathered from control nodes were counted as inputs of the model;thus, through the model, the priorities of these control nodes could have dynamic adjustments. Network communication distributed channel resources by way of dynamic priorities, ensuring not only that there was less communication conflict among nodes at a certain moment, but also that adaptive adjustments of priorities could be achieved to improve transmission efficiency. The analysis and the simulation results demonstrate the method is correct and efficient.
Semiconductor light-emitting die (LED) has now become one of the most popular lighting devices. Before dies are put into process of package, they need be inspected and sorted strictly, so following waste will be saved...
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In order to improve production efficiency, inspecting and sorting of LED dies are done respectively in prober and sorter. During the inspection, dies may be broken, fragmentized, tiny moved, or deflected slightly, bes...
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Aimed at the goal of improving the quality and the efficiency of welding for T-type welding seam, This paper put forward a method to track the seam by using the vision sensor. Machine tool main motion trajectory is ge...
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