Move blocking strategy applied to re-entrant manufacturing line scheduling

Jung, Tae Y.; Jang, Hong; Lee, Jay

doi:10.1007/s12555-014-0243-9

Cited by 7 publications

(3 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A strategy called move blocking (MB) has seen prior application in RHC for a similar purpose [32]. This strategy involves constraining groups of adjacent-in-time predicted inputs to have the same value, curtailing the number of degrees of freedom in the optimisation problem to reduce complexity at the expense of optimality [33].…”

Section: B Structured Noise Blocking In Estimationmentioning

confidence: 99%

Receding horizon estimation and control with structured noise blocking for mobile robot slip compensation

Wallace

Kong

Hill

et al. 2019

2019 International Conference on Robotics and Automation (ICRA)

View full text Add to dashboard Cite

The control of field robots in varying and uncertain terrain conditions presents a challenge for autonomous navigation. Online estimation of the wheel-terrain slip characteristics is essential for generating the accurate control predictions necessary for tracking trajectories in off-road environments. Receding horizon estimation (RHE) provides a powerful framework for constrained estimation, and when combined with receding horizon control (RHC), yields an adaptive optimisationbased control method. Presently, such methods assume slip to be constant over the estimation horizon, while our proposed structured blocking approach relaxes this assumption, resulting in improved state and parameter estimation. We demonstrate and compare the performance of this method in simulation, and propose an overlapping-block strategy to ameliorate some of the limitations encountered in applying noise-blocking in a receding horizon estimation and control (RHEC) context.

show abstract

Section: B Structured Noise Blocking In Estimationmentioning

confidence: 99%

Receding horizon estimation and control with structured noise blocking for mobile robot slip compensation

Wallace

Kong

Hill

et al. 2019

2019 International Conference on Robotics and Automation (ICRA)

View full text Add to dashboard Cite

show abstract

“…Therefore, fabrication system that is represented by Intel Five Machine Six Steps Mini Fab is considered in this study. The Mini Fab is selected because it is small, yet it captures most of the complexities and challenges involved in the real fabrication facilities in the form of re-entrant loops, operators, batching, failures, preventive maintenance, set-ups, disparate processing, loading and unloading [7,23,24,26,32,33]. Accordingly, the description of Mini Fab system is discussed first in the following sub-section.…”

Section: The Proposed Simulation Model For Wafer Fab Systemmentioning

confidence: 99%

“…A numerical problem description, considered from the literature [7,23,24,26,32,33], representing the complex process of mini fab is as follows. Diffusion workstation is a batch processor whereas ion-implantation and lithography workstations are discrete processors.…”

Section: Description Of Mini Fabmentioning

confidence: 99%

Investigation of different inputs and a new release policy in the proposed simulation model for wafer fabrication system

Singh

Mathirajan

2019

Sādhanā

View full text Add to dashboard Cite

This paper investigates the effect of different inputs on selected performance metrics such as cycle time, WIP level and throughput in the processes of semiconductor wafer fab by developing a simulation model of representative but fictitious semiconductor wafer fab. The different inputs include arrival rate, arrival distribution, processing time, maintenance schedule, operator schedule, batch size, dispatching rule and release policy. Simulation results show that the relationship between inputs and system performance metrics, considered in this study, are extremely complex particularly for the inputs maintenance schedule, operator schedule and batch size. An overall result shows that dispatching rule and closed loop release policy can significamtly improve the performance of wafer fabrication system. However; major improvement comes from closed loop release policy. Accordingly, this paper presents a new closed loop release policy called as constant batch machine workload (CONSTBWL) to improve the performance of wafer fab. The behaviour of CONSTBWL is analysed in combination with dispatching rules using the proposed simulation model for wafer fab. Simulation results show that CONSTBWL policy outperformed traditional release policies in terms of the average cycle time, the work in process (WIP) level and the standard deviation of WIP level under a prescribed throughput level. Furthermore, the analysis of the results indicated that a good shop floor performance can be achieved with a right combination of closed loop release policy and simple dispatching rules with respect to the choice of performance metrics.

show abstract

Experimental investigation for performance assessment of scheduling policies in semiconductor wafer fabrication—a simulation approach

Singh

Mathirajan

2018

Int J Adv Manuf Technol

View full text Add to dashboard Cite

Move blocking strategy applied to re-entrant manufacturing line scheduling

Cited by 7 publications

References 16 publications

Receding horizon estimation and control with structured noise blocking for mobile robot slip compensation

Receding horizon estimation and control with structured noise blocking for mobile robot slip compensation

Investigation of different inputs and a new release policy in the proposed simulation model for wafer fabrication system

Experimental investigation for performance assessment of scheduling policies in semiconductor wafer fabrication—a simulation approach

Contact Info

Product

Resources

About