a project I am now working on with The University of
Southern California (L.A.)'s Industrial and Systems
Engineering Department in my spare time.
to bring the internet to the plant floor with this
technology. We are moving the controllers that
control equipment/tools on the plant floor to a
remote location so that the same remote server can be
used to control the operations of different machines
all across the Internet/Intranet.
project is completely Java based and it involves a lot of Enterprise
JavaBeans (EJB), Jini and serial
controller/servers will bring push technology to the
plant floor. Users can now subscribe to the
appropriate services that they want to help them
detect different kinds of anamolies and automatically
rectify them. This also will help people control
plant-floor tools from remote corners of the globe.
researchers investigating specific anamolies tend to
go more deeper into one particular type of anamoly
that they do not have time to research other types of
anamolies. This project helps to tie all the research
together and help alleviate this problem.
developing a Lean Manufacturing Machine System (LMMS)
that facilitates real-time process control and
maintenance for a multitude of similar production
equipment. The LMMS is based on combining nonlinear
dynamics with multi-agent systems to integrate
several signal-level and decision-level tasks. We
have developed a formalism to model agents for LMMS
and are implementing an architecture to implement
computations and communications involved in LMMS.
architecture uses a local server that gathers
signals from an equipment, stores and transfers
these to a remote host, receives control
input-generating algorithms from a remote host
server, updates control codes and executes these
through several actuators.
gateway is connected to several distributed
well-known agents, each responsible for detecting
a particular anomaly and synthesizing a remedial
control policy to optimize a limited local
objective. Global objectives are attained through
a collaborative negotiation among these agents.
The remote servers and agents are multiplexed to
simultaneously cater to several machines.
presented this architecture in specific reference to
controlling machining process under the presence of
multiple anomalies occurring over a reasonably wide
range of cutting conditions (process parameters). We
considered only 3 anomalies, namely, tool wear,
chatter and forces for performance assessment
recently presented a paper on LMMS at The International
Conference on Agile Manufacturing (ICAM '98), held at the
Radisson Hotel Metrodome in Minneapolis, Minnesotta
and The University of Minnesota Campus,
Minneapolis, Minnesota, USA from June 21-23 '98. Click here for the
If you are really interested in
learning more about this project, please send in a note
to me or to Prof.Dr.Satish Bukkapatnam of