Liaoning Police College Academy

Dalian, China

Liaoning Police College Academy

Dalian, China

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Lu R.,Liaoning Police College Academy | Li L.-Y.,Dalian University of Foreign Languages
Xitong Fangzhen Xuebao / Journal of System Simulation | Year: 2014

Considering the problem of scheduling model and schedulibility for cluster tools with residency time constraints, the linear programing model with both dual-blade robot and temporal constraints was constructed. Based on this, the process of dual-blade robot to periodically process and transport wafer was analyzed, and the necessary and sufficient conditions were proved theoretically. The control policy which made unschedulable problem into schedulable one was proposed by means of reducing parallel models and choosing appropriate processing and residency time. The simulations and engineering software were realized respectively. The results show that the proposed model and control policy will help to reduce testing wafers and increase producitivity.


Lu R.,Liaoning Police College Academy | Li L.,Dalian University of Foreign Languages
Xitong Fangzhen Xuebao / Journal of System Simulation | Year: 2016

Considering the scheduling model and schedulibility for single-arm cluster tools with wafer residency time constraints, a mixed- integer linear programming model with both single-arm and temporal constraints for processing module was constructed. The rationality of equivalent processing time for concurrency module was theoretically proved. Based on this, the periodic wafer processing and transportation procedure for both single-arm and processing module was analyzed. Meanwhile, the schedulibility conditions for cluster tools were proved. The simulation experiments were carried out to test the model and schedulable conditions, and the results reveal the validity and feasibility of the presented model. © 2016, The Editorial Board of Journal of System Simulation. All right reserved.


Lu R.,Liaoning Police College Academy
26th Chinese Control and Decision Conference, CCDC 2014 | Year: 2014

Because of residency time constraits for cluster tools, it is very difficult to schedule them. This paper addresses their scheduling issues and conducts their schedulability and scheduling analysis. A linear programming model with temporal constraints of dual-blade robot and processing modules is developed. With the model, the cycle process of the dual-blade robot and processing module is analyzed. Based on the model and the analysis, necessary and sufficient conditions under which the system is schedulable are presented. At the same time, the control strategy to make the non-schedulability scheme into schedulable scheme is discussed by means of decreasing the processing mudule number and choosing the appropriate processing time. The simulation results show that the mentioned model and control strategy is helpful to decrease the number of the test wafers and to increase the wafer productivity. © 2014 IEEE.

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