Research on dynamic dispatching rule for semiconductor assembly production line

2012 ◽  
Author(s):  
Chen Hai-Zan ◽  
Liu Chang ◽  
Rong Yuan ◽  
Zhu Jun
Keyword(s):  
Production Line ◽  
Dispatching Rule ◽  
Dynamic Dispatching ◽  
Assembly Production

Assessment on Copper C194 Mechanical Properties Variations in Typical Semiconductor Assembly Production Line

2012 ◽  
Vol 576 ◽  
pp. 523-526
Author(s):  
Abdullah Rashid Amirul ◽  
Saad Nor Hayati ◽  
Bulan Abdullah
Keyword(s):  
Mechanical Properties ◽  
Production Line ◽  
Defect Group ◽  
Control Group ◽  
Lead Frame ◽  
High Expectation ◽  
Bond Yield ◽  
Defect Groups ◽  
Semiconductor Manufacturer ◽  
Assembly Production

Process variation is inevitable for any production line regardless of the industry. The trend for smaller, lighter yet multifunctional devices has created high expectation for the semiconductor manufacturer to produce more robust and highly reliable devices. One way to achieve this is by assessing the variance performance of the assembly production. In this study, the mechanical properties of copper alloy C194 used as the lead frame for particular IC device have been investigated. Samples from control and defect groups been subjected to hardness (Rockwell test) and tensile (Instron test) while the optical microscopy used to verify the microstructure. The result shows that the hardness and tensile of the defect group is relatively lower than the control group while the elongation of the defect group is almost 10% higher. This finding is very useful to be shared with the process owner so that in-depth investigation on the lead frame material consistency or the temperature range optimization can be carried out to prevent such variations that contribute to the inconsistence wire bond yield performance.

Optimization Simulation of Hybrid Assembly Production Sequencing Management

2013 ◽  
Vol 850-851 ◽  
pp. 1008-1011
Author(s):  
Jian Feng Liu
Keyword(s):  
Mathematical Models ◽  
Production Process ◽  
Production Line ◽  
Production Capacity ◽  
Simulation Models ◽  
Manufacturing Plant ◽  
Hybrid Assembly ◽  
Automobile Engine ◽  
Optimization Simulation ◽  
Assembly Production

Sequencing of hybrid assembly production directly affects the balancecontinuity and punctuality of production process. First, the mathematical models with MILP of hybrid assembly production are established, and then the sets of sequencing scheme of minimum makespan which meet customers demands are obtained. Furthermore workshop simulation models with Flexsim software are established. In this paper, the painting hybrid assembly production line of some automobile engine manufacturing plant was employed to analyze the sequencing as an example, and the obtained painting production line sequencing scheme is consistent with the actual production of enterprises and it improves production capacity.

Application of RFID in a Flexible Assembly Production Line Based on Tracking Algorithm

2014 ◽  
Vol 1037 ◽  
pp. 557-560
Author(s):  
Bing Feng Liu ◽  
Gang Li
Keyword(s):  
Radio Frequency Identification ◽  
Production Line ◽  
Production Efficiency ◽  
Tracking System ◽  
Tracking Algorithm ◽  
Filter Model ◽  
Flexible Assembly ◽  
Frequency Identification ◽  
Assembly Production ◽  
Flexible Assembly Line

Radio frequency identification (RFID) technology provides a wireless way to detect and recognize objects. By using the RFID reader as a sensor, development of RFID helper object tracking system to track the production situation of a flexible assembly line make tracking application. At the same time, based on the range and without scope of cooperation tracking algorithm, we analysis the system. And in order to achieve the balance of density and cost among the read write device, this paper considers only simple reader and omnidirectional scattering antenna. In order to further improve the production efficiency, we use a particle filter model, in order to further processing tracking result of object, improve tracking precision. We suggest that the tracking system can also predict the operation state of product in assembly production line.

A New Combined Dispatching Rule of One-of-a-Kind Assembly Production Process

2011 ◽  
Vol 148-149 ◽  
pp. 409-412
Author(s):  
Ming Li ◽  
Ming Yu Zhang ◽  
Jun Han
Keyword(s):  
Performance Analysis ◽  
Production Process ◽  
Production System ◽  
Numerical Experiments ◽  
Critical Path ◽  
Total Tardiness ◽  
Dispatching Rule ◽  
Process Route ◽  
Interarrival Times ◽  
Assembly Production

In this paper, we researched a one-of-a-kind assembly production system where every product is unique (i.e. each product has its unique tree-like process route) and arrives one by one randomly with the exponentially distributed interarrival times. We proposed a new effective combined dispatching rule (ELFT rule) that is constructed by considering three factors: the latest finishing time (LFT), the remaining path size (RPS) and whether an operation is on the critical path (CP). We did many numerical experiments to compare the efficiency between the proposed rule and other rules that were reported in existing studies such as LFT rule and EDD rule. The performance analysis shows that the proposed dispatching rule is more effective in reducing the number of tardy products and total tardiness time.

CONWIP based control of a lamp assembly production line

2007 ◽  
Vol 18 (2) ◽  
pp. 261-271 ◽  
Author(s):  
W. H. Ip ◽  
Min Huang ◽  
K. L. Yung ◽  
Dingwei Wang ◽  
Xingwei Wang
Keyword(s):  
Production Line ◽  
Assembly Production
Sign in / Sign up

Export Citation Format

Share Document