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A mixed dispatching rule approach in FMS scheduling
Springer Science and Business Media LLC - Tập 6 - Trang 69-87 - 1994
Short-term scheduling in flexible manufacturing systems (FMSs) is a difficult
problem because of the complexities and dynamic behavior of FMSs. To solve this
problem, a dispatching rule approach is widely used. In this approach, however,
a single dispatching rule is usually assigned for all machines in a system
during a given scheduling interval. In this paper, a mixed dispatching rule
which can a...
Modular synthesis of Petri nets for modeling flexible manufacturing systems
Springer Science and Business Media LLC - Tập 7 - Trang 287-310 - 1995
This paper proposes a modular Petri net synthesis method for modeling flexible
manufacturing systems based on synchronization among control processes of the
manufacturing resources (such as robots and machines). In the method, the target
system is modeled in a bottom-up and uniform manner by first describing the
system's control processes using strongly connected state machines (SCSMs) as
the basi...
Direct and Indirect Effects of Product Mix Characteristics on Capacity Management Decisions and Operating Performance
Springer Science and Business Media LLC - Tập 13 - Trang 241-265 - 2001
Studies of the performance effects of product mix complexity typically treat
plant capacity utilization and machine scheduling (for example, setup frequency)
as exogenous factors associated with technology choices, economies of scale, and
the level of market demand. However, capacity utilization and machine scheduling
also reflect tactical operating decisions taken by local managers to maximize
sh...
Process Monitoring Strategies for Surface Mount Manufacturing Processes
Springer Science and Business Media LLC - Tập 15 - Trang 95-112 - 2003
Establishing reliable surface mount assemblies requires robust design and
assembly practices, including stringent process control schemes for achieving
high yield processes and high quality solder interconnects. Conventional
Shewhart-based process control charts prevalent in today's complex surface mount
manufacturing processes are found to be inadequate as a result of
autocorrelation, high false ...
Manufacturing Cost Modeling for Product Design
Springer Science and Business Media LLC - Tập 12 - Trang 207-217 - 2000
The process of product design is driven toward achieving design specifications
while meeting cost targets. Designers typically have models and tools to aid in
functional and performance analysis of the design but few tools and little
quantitative information to aid in cost analysis. Estimates of the cost of
manufacture often are made through a cost multiplier based on material cost.
Manufacturing ...
A review of some issues and identification of some barriers in the implementation of FMS
Springer Science and Business Media LLC - Tập 19 - Trang 1-40 - 2007
Global competition, advancements in technology and ever changing customers’
demand have made the manufacturing companies to realize the importance of
flexible manufacturing systems (FMS). These organizations are looking at FMS as
a viable alternative to enhance their competitive edge. But, implementation of
this universally accepted and challenging technology is not an easy task. A
large number of...
Batch sizes and lead-time performance in flexible manufacturing systems
Springer Science and Business Media LLC - Tập 8 - Trang 5-21 - 1996
Production lead-time performance in flexible manufacturing systems is influenced
by several factors which include: machine groupings, demand rates, machine
processing rates, product batching, material handling system capacity, and so
on. Hence, control of lead-time performance can be affected through the
manipulation of one or more of these variables. In this article, we investigate
the potential ...
Business Process Reengineering and Flexibility: A Case for Unification
Springer Science and Business Media LLC - Tập 14 - Trang 73-86 - 2002
Business process reengineering (BPR) offers a radical approach to improving the
performance of an organization. However, although there have been successes BPR
is recognized as a high-risk activity, prone to failure. There are a variety of
reasons for this and this paper highlights one which is argued to be the lack of
attention that BPR pays to flexibility and its inability to cope with a changin...
Optimal door fitting with systematic fixture adjustment
Springer Science and Business Media LLC - Tập 6 - Trang 99-121 - 1994
A systematic approach is presented to obtain the best door gap quality through
optimal door fitting in automobile body manufacturing. First, three indexes of
gap quality are defined; they are: (1) door gap width deviation relative to
design nominal; (2) door gap parallelism; and (3) car-to-car gap consistency.
Then the door-fitting problem is formulated into a general constrained
optimization prob...
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