Petri net‐based modeling and performance analysis of transaction scheduling in grid database

2009 ◽  
Vol 28 (6) ◽  
pp. 1458-1470 ◽  
Author(s):  
Yaojun Han ◽  
Changjun Jiang ◽  
Xuemei Luo
Keyword(s):  
Performance Analysis ◽  
Petri Net ◽  
Transaction Scheduling ◽  
Grid Database ◽  
And Performance

Modeling and Performance Analysis of a Flexible PCB Assembly Station Using Petri Nets

1991 ◽  
Vol 113 (4) ◽  
pp. 410-416 ◽  
Author(s):  
MengChu Zhou ◽  
Ming C. Leu
Keyword(s):  
Performance Analysis ◽  
Petri Nets ◽  
Petri Net ◽  
Printed Circuit Boards ◽  
Control Structure ◽  
Mutual Exclusion ◽  
System Control ◽  
Pcb Assembly ◽  
And Performance ◽  
Equipment Utilization

This paper presents Petri net modeling and performance analysis of a flexible workstation for automatic assembly of printed circuit boards. Concentrating on the operational aspects, we construct ordinary and temporal Petri net models for an existing flexible workstation (AT&T FWS-200). These models enable designers to have better understanding of concurrency, synchronization, mutual exclusion, and sequential relations involved in the system control from the graphical representations of Petri nets. From the models the performance analysis of system operations under different settings can be conducted, with the results used to help designers choose the best operational setting based on system parameters such as component insertion time and robot failure rate. We focus our performance analysis on two cases: one is the Petri net with parallel mutual exclusion based control structure, and the other is the control structure based on the marked graph. The analysis results lead to the conclusion that the former structure has better performance in terms of throughput and equipment utilization. The approaches as presented in this paper can be generalized and applied to many other applications of multi-robot assembly systems.

Simulation and Performance Analysis of a FMS/CIM Using Stochastic Timed Petri Nets

2013 ◽  
Vol 837 ◽  
pp. 322-327
Author(s):  
Daniela Coman ◽  
Adela Ionescu
Keyword(s):  
Performance Analysis ◽  
Petri Nets ◽  
Petri Net ◽  
Flexible Manufacturing ◽  
Manufacturing System ◽  
Utilization Rate ◽  
Deadlock Detection ◽  
Timed Petri Nets ◽  
Graphic Construction ◽  
And Performance

This paper focuses on the modelling, simulation and the performance analysis of a flexible manufacturing system using stochastic timed Petri nets so as to evaluate various performance parameters such as utilization rate of machines, deadlock detection, cycle time, and throughput rate of system in order to obtain the optimum productivity. The simulation of the manufacturing system using Petri nets provides the possibility to view the manufacturing process in time. Petri net model is implemented in Petri Net Toolbox under MATLAB environment. It is achieved the graphic construction of the net. Then, transporting it into a specific mathematical formalism it is made, so that the fulfiled structure to be fully retrieved and used to bring out the internal dynamics of the model. It is validated in this way the net topology, the evolution of (their dynamics), as well as the structural and behavioral properties (corresponding to checking if resources usage is stable and the model have no deadlocks). Some global performance indicators are determined in order to evaluate the performance of the proposed manufacturing system.

A GENERALIZED STOCHASTIC PETRI-NET MODEL FOR PERFORMANCE ANALYSIS AND ALLOCATION OPTIMIZATION OF A PARTICULAR REPAIR SYSTEM

2013 ◽  
Vol 30 (01) ◽  
pp. 1250042 ◽  
Author(s):  
BINFENG LI ◽  
XIAOBIN LI ◽  
WEIHONG GUO ◽  
SU WU
Keyword(s):  
Performance Analysis ◽  
Petri Net ◽  
High Speed ◽  
Real Field ◽  
Repair System ◽  
Repair Service ◽  
Stochastic Petri Net ◽  
Multiple Parameters ◽  
And Performance ◽  
Generalized Stochastic Petri Net

This paper presents a generalized stochastic Petri-net model for performance analysis and allocation optimization of a repair system with interchangeable inventory. A repair system with interchangeable-inventory is an important type of repair-service, which features components that are assembled circularly with interchangeable-component inventory. Despite improved efficiency, major difficulties in model formulation and performance analysis arise due to a complex fork/join structure and the presence of interchangeable-component inventory. In this study, by applying a generalized stochastic Petri-net to model the fork/join structure and interchangeable inventory, a system with one overhaul center and one interchangeable-component repair shop was defined in the Petri-net by places, transitions and tokens. A performance analysis with single and multiple parameters and simulation experiments was performed according to the real field data of high-speed railway locomotives overhaul. With appropriate weights on each portion of the system resources, the optimal design scenario for the allocation of a specific repair system was achieved to control the overall expenditure.

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