scholarly journals An improved optimization method for materials distribution based on spatiotemporal clustering in automobile assembly lines

Procedia CIRP ◽  
2021 ◽  
Vol 97 ◽  
pp. 241-246
Author(s):  
Sheng Qu ◽  
Yaoguang Hu ◽  
Lixiang Zhang ◽  
Shan Lu
Keyword(s):  
Optimization Method ◽  
Assembly Lines ◽  
Automobile Assembly ◽  
Spatiotemporal Clustering

Integrated Production Planning and Scheduling on Automobile Assembly Lines

2003 ◽  
Vol 35 (8) ◽  
pp. 711-725 ◽  
Author(s):  
Hong-Sen Yan ◽  
Qi-Feng Xia ◽  
Min-Ru Zhu ◽  
Xia-Ling Liu ◽  
Zhi-Min Guo
Keyword(s):  
Production Planning ◽  
Assembly Lines ◽  
Planning And Scheduling ◽  
Integrated Production ◽  
Automobile Assembly ◽  
Production Planning And Scheduling ◽  
Integrated Production Planning

Researching and Applying the Line Balancing Methods in Optimizing Automobile Assembly Lines

2019 ◽  
Vol 889 ◽  
pp. 574-579
Author(s):  
Nguyen Phi Trung ◽  
Le Minh Tai
Keyword(s):  
Waiting Time ◽  
Efficiency Index ◽  
Idle Time ◽  
Line Balancing ◽  
Assembly Lines ◽  
Time Saving ◽  
Automobile Manufacturing ◽  
Advantages And Disadvantages ◽  
Automobile Assembly ◽  
Task Time

The purpose of this paper is to researching basic methods of line balancing used widely in operations. Particularly, five basic methods including Longest task time, Shortest task time, Most following tasks, Least following task, Ranked positional weighted are researched. Then they are applied in balancing the assembly line of an automobile manufacturing company. The results show the comparisons of advantages and disadvantages of each method based on total idle time and efficiency index. Firstly, idle time is the waiting time or non-working time of the workers while they are still paid their enough salary. Moreover, the waiting time makes an unfair between workers - some people work more and some work less. Secondly, efficiency in the workplace is the time it takes to do something. Efficient employees and managers complete tasks in the least amount of time possible with the least amount of resources possible by utilizing certain time-saving strategies. The calculations are performed to create these two values and graphs are drawn with the support of excel softwares.

scholarly journals System Modeling and Real-Time Simulator for Highly Model-Mixed Assembly Systems

1999 ◽  
Vol 121 (2) ◽  
pp. 282-289 ◽  
Author(s):  
Chung-Hsien Kuo ◽  
Han-Pang Huang ◽  
Kuang C. Wei ◽  
Steve S. H. Tang
Keyword(s):  
Real Time ◽  
Automobile Industry ◽  
Production Systems ◽  
System Modeling ◽  
Rapid Change ◽  
Assembly Systems ◽  
Assembly Lines ◽  
Flexible Assembly ◽  
Automobile Assembly ◽  
Demand Fluctuations

In recent years, the automobile industry is facing more challenge than ever due to rapid model change requirements and demand fluctuations. Traditional fixed-type production systems are less capable in coping with the rapid change, while flexible production systems can better meet the requirement of low-volume production with model variations. Flexible machines integrated with model-mixed assembly lines form flexible assembly systems (FASs). In this paper, Colored Timed Petri Net (CTPN) is used to model a highly model-mixed automobile assembly system. Based on this CTPN model, a real-time simulator was developed along with different dispatching rules. Besides, the algorithm of balanced budget work standard (BWS) for a small batch production is developed for adjusting the loading balance of the operators in the highly model-mixed assembly lines. The simulator can be used as an effective tool for developing scheduling strategies.

The effect of joint forces and torques on speed variation in automobile assembly lines

Work ◽  
2018 ◽  
Vol 61 (2) ◽  
pp. 211-224 ◽  
Author(s):  
Derya Ide ◽  
Onder Tokcalar ◽  
Tulin Gunduz
Keyword(s):  
Assembly Lines ◽  
Speed Variation ◽  
Automobile Assembly ◽  
Joint Forces

Facing the open innovation gap: measuring and building open innovation in supply chains

2015 ◽  
Vol 10 (1) ◽  
pp. 50-75 ◽  
Author(s):  
Rania Abd Elmonem Shamah ◽  
Shaymaa M. Elssawabi
Keyword(s):  
Supply Chains ◽  
Open Innovation ◽  
Assembly Lines ◽  
Content Type ◽  
Internal Customer ◽  
Automobile Assembly ◽  
Innovative Products ◽  
Middle Managerial ◽  
Managerial Level

Purpose – This study aims to develop a standardized instrument to measure open innovation and trust. The instrument is designed to examine the willingness of those involved in supply chains (SCs) to apply open innovation. It may also be used to observe the potential role of customers, competitors and suppliers in improving the performance of SCs. Design/methodology/approach – This survey of the extant studies of Multinational Automobiles Assembly lines in Egypt involved a questionnaire, which was provided across all grades at the middle managerial level. This questionnaire was divided into two main sections. The first section was concerned with elements of open innovation such as innovation, shared values and shared knowledge. The second section was focused on interrelated types of organizational and extra-organizational trust. Findings – The developed instrument was designed to access and analyze the different types of trust required for the optimal application of open innovation. Its purpose was to enhance customer satisfaction, and to help to create better internal-customer performance and the provision of innovative products. This explorative study indicated that Multinational Automobile Assembly lines in Egypt are willing to apply open innovation methods to improve their performance. Research limitations/implications – The study had a number of limitations. As the survey was conducted entirely on Multinational Automobile Assembly lines in Egypt, the applicability of the proposed scale will need to be tested further on different countries and types of industry. Originality/value – There is little empirical research about implementation of open innovation. Practitioners and researchers should find value in this unique instrument tool.

scholarly journals A Novel Assembly Line Balancing Method Based on PSO Algorithm

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Xiaomei Hu ◽  
Yangyang Zhang ◽  
Ning Zeng ◽  
Dong Wang
Keyword(s):  
Manufacturing System ◽  
Assembly Line ◽  
Assembly Line Balancing ◽  
Pso Algorithm ◽  
Optimization Method ◽  
Line Balancing ◽  
Assembly Lines ◽  
Smoothness Index ◽  
Takt Time ◽  
Assembly Line Balancing Problem

Assembly line is widely used in manufacturing system. Assembly line balancing problem is a crucial question during design and management of assembly lines since it directly affects the productivity of the whole manufacturing system. The model of assembly line balancing problem is put forward and a general optimization method is proposed. The key data on assembly line balancing problem is confirmed, and the precedence relations diagram is described. A double objective optimization model based on takt time and smoothness index is built, and balance optimization scheme based on PSO algorithm is proposed. Through the simulation experiments of examples, the feasibility and validity of the assembly line balancing method based on PSO algorithm is proved.

Organic Computing für Nacharbeit in Fließmontagen*/Organic computing for rework in flow assembly lines – Enhancing the efficiency of complex rework processes using an observer/controller-architecture

2018 ◽  
Vol 108 (03) ◽  
pp. 118-123
Author(s):  
W. Tönnes ◽  
E. Westkämper
Keyword(s):  
Computer Science ◽  
Innovative Approach ◽  
Manual Labor ◽  
Complex Task ◽  
Assembly Lines ◽  
Flow Lines ◽  
Automobile Assembly ◽  
Oder Nicht ◽  
Organic Computing

In der Fließmontage von Automobilen kommt es während der meist manuellen Montage gelegentlich zu Fehlern wie Beschädigungen an Kabelsteckern oder nicht korrekt montierten Bauteilen. Diese Fehler müssen möglichst innerhalb der Fließmontage behoben werden, um eine kostenintensive Nacharbeit am Fahrzeug in separaten Bereichen zu vermeiden. Dieser Beitrag zeigt, wie ein neuartiger Informatikansatz bei der Beherrschung dieser komplexen Aufgabe unterstützend wirken kann.   In flow lines for automobile assembly, defects like damaged cable connectors or incorrectly assembled components occur randomly due to the high amount of manual labor. These defects must be reworked as quickly as possible within the flow assembly to avoid additional rework on the product in separate areas. This article shows how an innovative approach in computer science can help to master this complex task.

Scheduling multiple servers to facilitate just-in-time part-supply in automobile assembly lines

2018 ◽  
Vol 38 (3) ◽  
pp. 347-360 ◽  
Author(s):  
Tao Peng ◽  
Binghai Zhou
Keyword(s):  
Local Search ◽  
Ant Colony Optimization ◽  
Ant Colony ◽  
Mixed Integer ◽  
Inventory Level ◽  
Just In Time ◽  
Tree Search ◽  
Assembly Lines ◽  
Content Type ◽  
Automobile Assembly

Purpose With regard to product variety and cost competition, just-in-time (JIT) part-supply has become a critical issue in automobile assembly lines (AALs). This paper aims to investigate a multiple server scheduling problem (MSSP) encountered in the JIT part-supply process of AALs. Parts are stored in boxes and allotted from the JIT-supermarket to consumptive stations with a multiple server system. The schedule is to dispatch and sequence material boxes on each server for minimizing line-side inventory levels. Design/methodology/approach A mixed integer linear programming (MILP) model is established to formulate the proposed MSSP to pave the way for CPLEX procedure. Considering the high complexity of MSSP, a hybrid ant colony optimization (HACO) approach is developed by integrating basic ant colony optimization (ACO) with local optimizers that comprise of a fast local search and a tailored breadth-first tree search method. Findings Both CPLEX and HACO approach are capable of solving small-scale instances to optimality within reasonable computation time. The proposed HACO has been well enhanced with the embedded fast local search and tailored breadth-first tree search, and it performs robustly in a statistically significant manner when applied to real-world scale instances. Originality/value No stock-outs constraints and weighted line-side inventory level are considered in this paper, and the MSSP is solved satisfactorily to facilitate an efficient JIT part-supply of the AAL. In terms of the algorithm design, a tree search-based local optimizer is embedded into ACO to combine the mechanisms of ACO and problem-specific optimization.

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