scholarly journals Scheduling Flexible Manufacturing System with Stacker Crane Using Coloured Petri Nets

2019 ◽  
Vol 20 (2) ◽  
pp. 113
Author(s):  
Ari Setiawan ◽  
Teguh Ersada Natail Sitepu
Keyword(s):  
Petri Nets ◽  
Production Scheduling ◽  
Flexible Manufacturing ◽  
Material Handling ◽  
Manufacturing System ◽  
Flexible Manufacturing System ◽  
Coloured Petri Nets ◽  
Allocation Of Resources ◽  
Speed And Accuracy ◽  
Main Model

Scheduling Flexible Manufacturing System (FMS) can increase production speed and accuracy. It because FMS has an ability to process various variety of product at same work station. However, FMS need efficient allocation of resources, for example: allocation of material handling equipment. This paper presents production scheduling FMS modelling to 24 jobs and 4 machines considering stacker crane. Coloured Petri Nets (CP-Nets) is the programming language which used to simulate model because it’s simplicity. This model consists two main model activities. The first one is Physical Activity (PA) which related to every activity that involve physical movement, including stacker crane processes. PA consist five CP-Nets models: loading/unloading station, stacker crane, machine, picking mechanism, and pallet stocker. The second activity is Logical Expression (LE) which related to the rules on how FMS should operate. LE consist three CP-Nets models: machine selection, pick-up request, and stage two procedure.  A simulation and numerical report show utilization level of all machines around 80-84% and stacker crane 8,74%. 

Modeling and Analysis of Processing Flow in a Flexible Manufacturing System Using Synchronized Petri Nets

2015 ◽  
Vol 809-810 ◽  
pp. 1474-1479 ◽  
Author(s):  
George Culea ◽  
Ion Cristea ◽  
Petru Gabriel Puiu
Keyword(s):  
Petri Nets ◽  
Flexible Manufacturing ◽  
Material Handling ◽  
Manufacturing System ◽  
Flexible Manufacturing System ◽  
Modeling And Analysis ◽  
Threshold Test ◽  
Wireless Module ◽  
Modern Solution ◽  
Processing Flow

This paper presents the modeling and analysis of processing flow in a flexible manufacturing system. We considered the case of a flexible manufacturing system consists of three machining centers MC1, MC2, MC3 and two material handling system which assure parts loading and discharge, respectively. The parts incorporate an Arduino system with XBee wireless module. These embedded systems connected through a network wireless can allow easy identification of parts, easy identification of their position, of performed operations, ensuring optimal guiding pallets. In order to be able to model all the requirements imposed were used synchronized Petri nets with inhibiting arcs and with threshold test. Developed model aims to optimize parts flow, under the conditions in which MC1 and MC3 have a buffer for 3 parts and MC2 have a buffer for 4 parts, respectively. By implementing a wireless ZigBee network for the control of parts movement it provides a modern solution by which central control system will know the position of every intelligent parts and will be able change the flow of processing according to unpredictable circumstances. FMS modeling is useful both in the design to implementation of the program which controls material movements and machine flow, as well as part of exploitation, providing a clear view of FMS functioning. By that model verified through simulation it was able to optimize the flow of parts, so as that there are no blockage in the flow of manufacturing. The study allows software implementation of control systems for the FMS.

The Study on Production Performances of Part Transporter in Flexible Manufacturing System by Using Simulation Method

2012 ◽  
Vol 576 ◽  
pp. 714-717
Author(s):  
Mohammad Iqbal ◽  
Muhammad Ridwan Andi Purnomo ◽  
Muhammad Ammar Bin Mohd Imra ◽  
Mohamed Konneh ◽  
A.N. Mustafizul Karim
Keyword(s):  
Waiting Time ◽  
Flexible Manufacturing ◽  
Material Handling ◽  
Manufacturing System ◽  
Flexible Manufacturing System ◽  
Arrival Rate ◽  
Simulation Method ◽  
Simulation Software ◽  
Average Waiting Time ◽  
Processing Times

Material handling is one of major components in Flexible Manufacturing System (FMS). Any improvement of material handling capability is to affect the performance of the whole system. This paper discusses the simulation study on the effect of part arrival rate and dispatching rules to the average waiting time and production rate of the FMS. The facilities of the system were modeled into simulation environment by using Arena Simulation Software. The production parameters such as machine processing times, part transportation speed and type of products were put into the model to represent the behaviors of the real system. Two rules have been considered in the study, i. e. first come first served (FCFS), and shortest processing time (SPT). Average waiting time and productivity were taken into account as performance measures of the system. The result of the study showed that SPT rule gives shorter average waiting time and higher productivity. Based on this result, the SPT rules would be used to control part transporter in order to have a better performance of the FMS.

Impact of Depth of Menu Hierarchy on Performance Effectiveness in a Supervisory Task: Computerized Flexible Manufacturing System

1985 ◽  
Vol 27 (6) ◽  
pp. 713-722 ◽  
Author(s):  
Pentti Seppålå ◽  
Gavriel Salvendy
Keyword(s):  
Data Structure ◽  
Supervisory Control ◽  
Flexible Manufacturing ◽  
Manufacturing System ◽  
Flexible Manufacturing System ◽  
Performance Effectiveness ◽  
Performance Time ◽  
Hierarchical Levels ◽  
Parallel Mode ◽  
Speed And Accuracy

The purpose of the study was to examine the effect of different menu structures on the effectiveness of supervisory control in a flexible manufacturing system. The variables evaluated included four hierarchical levels, two sizes of database, two work methods, and four distances between the items in the data structure. The results indicated that both performance time and errors increased as the hierarchical levels of the data structure increased. This implies that the parallel mode of data presentation is more effective than the hierarchical one. Furthermore, information that is scattered around the database should be acquired and considered simultaneously, as searching back and forth through the menu hierarchy decreases the speed and accuracy of performance.

scholarly journals Development of a Small Scale Material Handling Machine for Automated Storage and Retrieval System (ASRS)

2020 ◽  
pp. 84-105
Author(s):  
Saif Ullah Iqbal ◽  
C. B. Yeo ◽  
Umar Nirmal
Keyword(s):  
Flexible Manufacturing ◽  
Material Handling ◽  
Manufacturing System ◽  
Flexible Manufacturing System ◽  
Retrieval System ◽  
Small Scale ◽  
Coding System ◽  
Storage And Retrieval ◽  
Software Modules ◽  
Automated Storage

The current works deals with the design and development of an Automated Storage and Retrieval System (ASRS) machine for Flexible Manufacturing System (FMS). The work involved investigating ASRS machine features and operating procedures, evaluating related hardware, software and communication modules for the machine. The work explored on the different options of hardware and software modules offered in the current market and further selected the suitable one for the ASRS machine development. Several design considerations and the limitations faced during the process of the project development and implementation are given. Arduino was used as the coding system for the Arduino UNO board while stainless steel 305 and aluminium was used as the main frame in fabricating the ASRS machine. Lastly, a final working prototype of a fully-developed ASRS machine with dimensions of: 80cm by 73cm by 94cm (length by width by height) is presented.

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