HDTenEightyP/NetNews huggingface dataset:
From: erik@maui.til.com (Erik Horstkotte)
Subject: Re: Fuzzy Control  (more questions)
Keywords: fuzzy control
Organization: Togai InfraLogic, Inc.
Date: Tue, 15 Sep 1992 19:20:46 GMT

In article <1992Sep12.190738.892@csus.edu>, tching@target.water.ca.gov
(Tracy Ching <SysAdmin>) writes:
|> In article <68037@hydra.gatech.EDU> gm26@prism.gatech.EDU
|> (MCMURRAY,GARY V) writes:
|> > I am having trouble understanding how the membership function
|> >is created in order to create linguistic control rules and the
|> defuzzification
|> >rules. 
|> >Internet: gm26@prism.gatech.edu
|> 
|> 	What techniques (if any) are available to come up with the
|> membership
|> functions.
|> tching@water.ca.gov

There are some, but most depend on having an existing controller that
you
are trying to duplicate.  In practice, that's a fairly rare situation.
We
at TIL are currently working on genetic algorithm techniques to
automatically tune a fuzzy control system in place.  This seems to be
a
promising approach.

The general technique for doing the job by hand is to start off with
an
arbitrary set of membership functions (I like to use 50% crossover
points
between triangular membership functions, with equally spaced peaks
ranging
between the extreme values of the associated variables), and to tune
the
results in place, or in simulation.  The technique works reasonably
well,
but requires some experience, and takes quite a bit of time.
-- 
Erik Horstkotte, Manager, Software Development, Togai InfraLogic,
Inc.
erik@til.til.com, uunet!til!erik - (714) 975-8522
Standard disclaimer: the preceding are my opinions, not TIL's.
Newsgroups: sci.engr.control
From: rajkumar@hobo.ECE.ORST.EDU (Rajkumar Vedam)
Subject: Re: test / (model reduction textbooks)
Keywords: test, model reduction
Organization: ECE Dept.,OSU,Corvallis
Date: Sat, 12 Sep 1992 18:45:50 GMT

In article <18qoe6INN8cn@bode.usc.edu> goh@bode.usc.edu (K.C.Goh) writes:
>This is a test posting.
>
>Does anybody out there know of any textbooks at the 
>graduate level which discuss the various methods of model reduction,
>e.g. balanced model reduction, hankel singular values, stochastic
>truncation ?
>
>Regards.
>

Have you tried the book "Dynamic Systems Control, Linear Systems
Analysis And Synthesis" by Robert E.Skelton, John Wiley & Sons, 1988 ?

--------------
Rajkumar Vedam
From: dangold1@iastate.edu (Daniel M Goldman)
Newsgroups: sci.engr.control
Subject: contact sensor
Date: 14 Sep 92 18:03:56 GMT
Organization: Iowa State University, Ames IA

Does anyone have a suggestion on how to build or where to buy
a sensor for a feedback loop which will detect the air/fluid or 
air/solid interface within 0.001mm?  The device must determine 
the thickness of a very soft material, and be able to detect
the surface without deforming it.  For robotics, it would close
the "caliper" until it "touched", then note the thickness, and
procede with the next step.  Any suggetions appreciated.
thank -DmG
  Please e-mail or post reply.
From: gm26@prism.gatech.EDU (MCMURRAY,GARY V)
Newsgroups: sci.engr.control
Subject: Fuzzy Control
Keywords: fuzzy control
Date: 11 Sep 92 20:26:06 GMT
Organization: Georgia Institute of Technology


Hello Everybody!!

Since this is a new news group, I hope that this is an appropriate place
for me to ask this question:  I am beginning to read up on and attempt
to learn to use fuzzy logic for some research that I am involved with
here at Georgia Tech.  I have a collection of articles by Zadeh that
outline the basis for fuzzy logic.  I have also been reading a book by 
Witold Pedrycz called "Fuzzy Control and Fuzzy Systems".  
  My question is 1) Are there any papers that detail a fuzzy control
system; 2) I am having trouble understanding how the membership function
is created in order to create linguistic control rules and the defuzzification
rules.  Thanks for all of your help and I hope that this group is a big
success!!

Gary McMurray
-- 
MCMURRAY,GARY V
Georgia Institute of Technology, Atlanta Georgia, 30332
uucp:	  ...!{decvax,hplabs,ncar,purdue,rutgers}!gatech!prism!gm26
Internet: gm26@prism.gatech.edu
Newsgroups: sci.engr.civil
From: jwb@eos.ncsu.edu (John W. Baugh Jr.)
Subject: PDES GARM
Reply-To: jwb@eos.ncsu.edu
Organization: North Carolina State University
Date: Tue, 15 Sep 1992 15:39:51 GMT

Anyone here familiar with the PDES General AEC Reference Model?

Well, in hoping for the best, here are some questions:

  * I have a draft marked Oct. 1988 -- is this the most recent?

  * Will GARM be "approved" in a state similar to this draft?

  * Is anyone developing generic functional / technical units
    as an AEC library (e.g., of parameterized components) using
    EXPRESS?

  * Any comments on the meta-topology capabilities?  Wouldn't
    hypergraphs subsume such capabilities and be more
    straightforward to specify and understand?

Answers to these questions, or comments by anyone familiar with GARM,
would be appreciated.

--
John Baugh
jwb@eos.ncsu.edu
Newsgroups: sci.engr.control
From: stote@tomcat.den.mmc.com (M. Stote)
Subject: Ren Sheng Lin where are you?
Organization: Martin Marietta Astronautics Group
Date: Mon, 14 Sep 1992 21:49:38 GMT

If anyone knows of an email address for Ren Sheng Lin please email 
it to me.  My last information is that he is in England pursuing
a doctoral program.  We were good friends in grad school but I
lost his address.

I know this group isn't a finding service but I've run out of other means.
Sorry

--
Mike Stoughton
stote@den.mmc.com
From: neilfp@astro.ocis.temple.edu (Neil F. Palumbo)
Newsgroups: sci.engr.control
Subject: Re: XAY+XB+CY+D=0, HELP
Date: 12 Sep 92 01:58:03 GMT
Organization: Temple University
X-Newsreader: Tin 1.1 PL5

I am trying to solve the matrix equation:

		XAY + XB + CY + D = 0, 

where A is (nxn), B (nxm), C (mxn) and D (mxm) with n > m. Furthermore,
the unknown matrices {X,Y} must be of a particular structure, namely X must
have the structure:

		| xx xx .. xx 0 ...................................0 |
		| 0  0  .. 0  xx xx .. xx 0 .......................0 |
		| 0  0  ...............0  xx xx .. xx 0 .............|
		| .................................................. |
		| 0  0  ..............................0  xx xx .. xx |

and Y must have the structure Y=X' (note Y not= X). Any ideas, comments etc?
Newsgroups: sci.engr.control
From: harald@efads1.tuwien.ac.at (Harald Stadlbauer)
Subject: RTA - realtime toolbox
Reply-To: harald@efads1.tuwien.ac.at (Harald Stadlbauer)
Organization: Technical University of Vienna, INFA
Date: Sun, 13 Sep 1992 19:59:56 GMT


will forward replies to him:


For all that have the need to bring Real-Time and relational DBs
together, there is some hope now.

RTA (Real Time Architecture) is a toolbox for implementing OS-independent,
distributed, Real-Time applications which require data to be stored and
maintained in relational DBs like ORACLE and DEC-Rdb.

RTA features

o  an OS-independent C interface library for system-calls
o  a common C subroutine library for Real-Time applications
o  a Real-Time object system for administration of shared memory
   data-objects
o  a procedural SQL interface for easy use of SQL in C programs
o  OS-independent  task management and supervision
o  OS-independent  intertask event handling
o  OS-independent  intertask queue communication
o  OS-independent  node (network nodes) handling and supervision
o  OS-independent  network-wide intertask event handling
o  OS-independent  network-wide intertask queue communication
o  a memory resident real time database (RtDb) with a hot link
   to a relational DB (SqlDb) with automatic RtDb to SqlDb
   table-synchronisation
o  network-wide RtDb to RtDb (internode) table-synchronisation
o  network-wide SqlDb to SqlDb (internode) table-synchronisation

Moreover it offers highly sophisticated features for easy
implementation of  MASTER-SLAVE and/or SERVER-CLIENT
configurations with HOT-LINKS to slaves and clients.


RTA, which is purely implemented in ANSI-C, is available as
a Run-Time license or as an unlimited source code license.

It currently supports the following OSs and DBs:

          OS          DBs
          -----------------------------
          VMS         DEC-Rdb, ORACLE
          ULTRIX      ORACLE
          ISC-UNIX    ORACLE
          OS/2        ORACLE




-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
Harald Stadlbauer, Institute of Flexible Automation, Technical University of 
                   Vienna, Gusshausstr. 27-29, A-1040 Vienna, AUSTRIA
                   e-mail: harald@efads1.tuwien.ac.at
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
Newsgroups: sci.engr.control
From: dvsg0223@uxa.cso.uiuc.edu (David Salamon)
Subject: Re: Fuzzy Control
Organization: University of Illinois at Urbana
Date: Sat, 12 Sep 1992 00:54:54 GMT
Keywords: fuzzy control

Try this reference:

C.C.Lee, IEEE Transactions on Systems, Man, and Cybernetics, Vol 20,
No. 2, page 404 March/April 1990

It is a pretty good summary of Fuzzy control.

David

--------------------------------------------------------------
David Salamon                Physics Graduate Student (Slave)
d-salamon@uiuc.edu           University of Illinois
--------------------------------------------------------------


Newsgroups: sci.engr.control
From: crm182c@bmers245.uucp (Hing-Fai Lee)
Subject: Tools for analysing sample domain control system
Organization: Bell-Northern Research, Ottawa, Canada
Distribution: na
Date: Mon, 14 Sep 92 16:57:52 GMT

I am looking for tools in the public domain for analysing
sample data (Z domain) control system. Any information on
ftp sites, capabilities, limitation etc will be greatly
appreciated. Thanks in advance. Hing-Fai

-------------------------------------------------------------
- Name:  Hing-Fai Lee   Address: Bell-Northern Research     -
- Phone: 613-765-2097            P.O. Box 3511, Station C   -
- FAX:   613-765-4953            Ottawa, Canada, K1Y 4H7    -
- Email: crm182c@bnr.ca
-------------------------------------------------------------
- Disclaimer: I do not speak for BNR nor BNR speaks for me. -
-------------------------------------------------------------
From: jwwhite@ache.mad.adelaide.edu.au (John White)
Newsgroups: sci.engr
Subject: New York University Elect Engineering can you help Australia?
Date: 8 Sep 92 01:16:48 GMT
Organization: University of Adelaide, South Australia
NNTP-Posting-Host: ache.mad.adelaide.edu.au

This is an urgent request for advice and assistance.

My brother-in-law  Mr. Andrew Baker
                   26 Fitzroy Ave.
                   Camden Park   5038

                   Office phone  Australia  61-8-3760969
                   After hours   Australia  61-8-2719088
                   Fax           Australia  61-8-2948601

is the production manager for a South Australian based company which is
in the process of installing a computerised position detection system in New
York city.  He has just discovered that he needs to replace 9 copies of a
512 byte EPROM (27C512 / 150 ns) in the system which has already been sent
to New York.

Request for advice:

Is there any problem with the idea of sending a binary file
created on an IBM PC Cross Assembler across the Network to New York?
It would need to be transferred to my Macintosh via
Apple File Exchange then sent to my unix box via FTP then transferred
to somebody's unix box in New York via FTP who can then use the file
to burn 9 EPROMs to be picked up by our representative in New York.

Request for assistance:

Is anyone in New York prepared to do this for us and what would be the charges
for such a service?
Please E-Mail me:  jwwhite@ache.mad.adelaide.edu.au  (John White)
or contact Andy directly as above.

Many thanks everyone for your time.
Newsgroups: sci.engr,sci.physics,sci.math,misc.wanted
From: haferman@icaen.uiowa.edu (Jeff Haferman)
Subject: NEED: internet address for Queen's University, Ontario
Date: Tue, 15 Sep 1992 19:39:22 GMT
Organization: University of Iowa, Iowa City, IA, USA


Please e-mail me an internet address for Queen's University in
Kingston, Ontario, CANADA.    Specifically, I am looking for
some folks in the Chemical Engineering Department there.

Also, if there is a more appropriate group to post this type
of query to, or if there is a database around with internet
addresses, please let me know.  



Jeff Haferman                            internet: haferman@icaen.uiowa.edu
Department of Mechanical Engineering     DoD 0186  BMWMOA 44469  AMA 460140
The University of Iowa
Iowa City, IA  52242                                 '76 R90S
From: mahadeva@ROSARITA.ENGR.UCDAVIS.EDU (Vim Mahadevan)
Newsgroups: sci.engr
Subject: data acquisition using laptop computers
Date: 8 Sep 92 22:31:49 GMT

I am interested in adapting some lab equipment so that it can be used in
the field.  The system consists of some sensing devices connected to an
IBM 8088 which does some calculations and spits out meaningful info.

My question:  what would be a good low priced, reliable laptop which could
be used for the data acquisition?  As you can tell, sampling speed is not
a high priority.  The current system samples only at about 4 Khz and it works
just fine.  From what I have read, most laptops cannot have an i/o card
added.  But there is some way you can add a card by attaching some sort
of jumper device.  Would like to hear from people using laptops, preferably
ibm, for data sampling, field measurements, etc.

This system will be marketed if it proves to work correctly.  This leads to
my second query:  anyone know anything about how I could approach a company
such as IBM and ask them to donate equipment to the company for development?
I heard that there arre cases where IBM will donate a computer or other
hardware to a fledgling company in exchange for a guarantee of a contract
if the product winds up in the marketplace.

Vim

Newsgroups: sci.engr
From: burkley@nosc.mil (Joe Burkley)
Subject: Journal of misinformation
Summary: Ever heard of it?
Organization: Naval Ocean Systems Center, San Diego, CA
Date: Tue, 15 Sep 1992 22:39:54 GMT

I have heard of publication called the Journal of Misinformation or 
something of that nature.  It is a parody of scientific journals, filled
with articles on subjects like artificial stupidity (as opposed to
artificial intelligence), etc.  Does anyone know if it still exists,
and a contact for getting a subscription?   Thanx.

				-Joe Burkley
				burkley@opus.nosc.mil
Newsgroups: sci.engr.civil
From: huangp@spot.Colorado.EDU (HUANG PEI YU)
Subject: Re: I want a hydrology program
Organization: University of Colorado, Boulder
Distribution: usa
Date: Mon, 14 Sep 1992 20:11:49 GMT

In article <PHILG.92Sep14125248@zug.ai.mit.edu> philg@martigny.ai.mit.edu writes:
>
>Does anyone know of programs that will calculate drainage basins,
>streams, ridges and ponds from a topographic model of a surface?
>
>Thanks,
>
>Philip Greenspun
>MIT Department of EECS

     Have you looked into the procedure "r.watershed," included
in the GRASS GIS package developed by the U.S. Army CERL? Appeared
to be what you need.

P. Huang
From: rush@pine.circa.ufl.edu (PANCHAPAKESAN)
Newsgroups: sci.engr.civil
Subject: Info needed about packages
Date: 13 Sep 92 22:51:23 GMT
Reply-To: rush@pine.circa.ufl.edu
Distribution: usa
Organization: University of Florida  (ufl.edu)
News-Software: VAX/VMS VNEWS 1.3-4

Hi,

I need information about heat transfer/ fluid flow
solver packages avialable in the market, and in particular,
a package called FIDAP. Can anyone tell me where to look?

Thanks in advance.

Raghu Panchapakesan

email : rush@pine.circa.ufl.edu
Newsgroups: sci.engr.civil
From: Sundar_Prasad@mtsg.ubc.ca
Subject: Impact load measurement/analysis methods?
Organization: Civil Engineering, Univ of BC
Distribution: na
Date: Mon, 14 Sep 1992 22:25:11 GMT

Hiya all,
I am looking for references on measuring and analysing impact loads on
structures. Specifically, my problem deals with hydrodynamic impact due
to ocean waves on offshore platform elements. But any work on experimental
measurement of high frequency or short duration loads will be useful.
Thanks for any pointers.

Sundar Prasad
Ocean Engineering
UBC, Vancouver, Canada
From: philg@zurich.ai.mit.edu (Philip Greenspun)
Newsgroups: sci.engr.civil
Subject: I want a hydrology program
Date: 14 Sep 92 16:52:48 GMT
Reply-To: philg@martigny.ai.mit.edu
Distribution: usa
Organization: M.I.T. Artificial Intelligence Lab.
In-reply-to: rush@pine.circa.ufl.edu's message of 13 Sep 92 22:51:23 GMT


Does anyone know of programs that will calculate drainage basins,
streams, ridges and ponds from a topographic model of a surface?

Thanks,

Philip Greenspun
MIT Department of EECS
From: silverma@aludra.usc.edu (David Silverman)
Newsgroups: sci.engr.civil
Subject: Re: I want a hydrology program
Date: 14 Sep 1992 18:59:33 -0700
Organization: University of Southern California, Los Angeles, CA
Distribution: usa
NNTP-Posting-Host: aludra.usc.edu

There's a company called Dodson & Assoc. (800) 235-8069 that has recently
sent me some brochures on a program called Valence and one called Networx,
both put out by Streamline Technologies, that sound like something you might
want to look into.
From: jtrsmith@garnet.berkeley.edu ()
Newsgroups: sci.engr.civil
Subject: please ignored this test
Date: 8 Sep 1992 05:36:48 GMT
Organization: University of California, Berkeley
Distribution: world
NNTP-Posting-Host: garnet.berkeley.edu

This is a test.
From: brachett@rhrk.uni-kl.de (Klaus Brachetti [MW])
Newsgroups: sci.engr
Subject: Looking for the Diss. of Dr. K. Sahasakmontri
Date: 11 Sep 92 09:58:30 GMT
Organization: University of Kaiserslautern, Germany

I'm looking for the dissertation of Dr. Sahasakmontri, Department of
Civil Engineering, University of Tokyo, Bunkyo-ku, Tokyo 113, Japan.

If it's possible to reach him via email, send me a mail.

Thanks, Klaus.

-- 

Institute of Applied Mechanics                internet: brachett@rhrk.uni-kl.de
University of Kaiserslautern, 6750            fax: +49/631/205-3055
Germany                                       phone: +49/631/205-2128
-- 

Institute of Applied Mechanics                internet: brachett@rhrk.uni-kl.de
University of Kaiserslautern, 6750            fax: +49/631/205-3055
Germany                                       phone: +49/631/205-2128
Xref: sparky sci.engr:2010 sci.environment:11346 sci.geo.fluids:337 sci.geo.geology:1965 sci.geo.meteorology:3075
From: harald@efasp1.tuwien.ac.at (Harald Stadlbauer)
Subject: Announcing RTA - realtime tools
Reply-To: harald@efasp1.tuwien.ac.at (Harald Stadlbauer)
Organization: Flexible Automation TU Wien
Date: Thu, 10 Sep 1992 14:26:11 GMT


I am posting this for a friend, who has no net access till now, but will forward replies to him:


For all that have the need to bring Real-Time and relational DBs
together, there is some hope now.

RTA (Real Time Architecture) is a toolbox for implementing OS-independent,
distributed, Real-Time applications which require data to be stored and
maintained in relational DBs like ORACLE and DEC-Rdb.

RTA features

o  an OS-independent C interface library for system-calls
o  a common C subroutine library for Real-Time applications
o  a Real-Time object system for administration of shared memory
   data-objects
o  a procedural SQL interface for easy use of SQL in C programs
o  OS-independent  task management and supervision
o  OS-independent  intertask event handling
o  OS-independent  intertask queue communication
o  OS-independent  node (network nodes) handling and supervision
o  OS-independent  network-wide intertask event handling
o  OS-independent  network-wide intertask queue communication
o  a memory resident real time database (RtDb) with a hot link
   to a relational DB (SqlDb) with automatic RtDb to SqlDb
   table-synchronisation
o  network-wide RtDb to RtDb (internode) table-synchronisation
o  network-wide SqlDb to SqlDb (internode) table-synchronisation

Moreover it offers highly sophisticated features for easy
implementation of  MASTER-SLAVE and/or SERVER-CLIENT
configurations with HOT-LINKS to slaves and clients.


RTA, which is purely implemented in ANSI-C, is available as
a Run-Time license or as an unlimited source code license.

It currently supports the following OSs and DBs:

          OS          DBs
          -----------------------------
          VMS         DEC-Rdb, ORACLE
          ULTRIX      ORACLE
          ISC-UNIX    ORACLE
          OS/2        ORACLE



-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
Harald Stadlbauer, Institute of Flexible Automation, Technical University of 
                   Vienna, Gusshausstr. 27-29, A-1040 Vienna, AUSTRIA
                   e-mail: harald@efads1.tuwien.ac.at
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
From: atmdcc@vax.oxford.ac.uk
Newsgroups: sci.engr
Subject: Ohmic contacts to n-type silicon
Date: 7 Sep 92 14:30:50 GMT
Organization: Oxford University VAX 6620

Does anyone know of a good method of making an ohmic contact to n-type silicon?

What I'm looking for is a simple evaporation/ sputtering technique to deposit a
metal or alloy down onto the silicon which avoids the unnecessary complication
of having to selectively dope a particular region. The metal-semiconductor
should not form a diode and the metal should adhere properly.

I've looked at some literature and whilst there's plenty of theoretical info
about energy bands, Fermi levels, and so on, there's scant detail of what you
do in practice.
-- 
................................................................................
 David Catling 	[Tel:+44 865 272927 Fax:+44 865 272923]
 	University of Oxford,  Atmospheric, Oceanic and Planetary Physics,
  	Clarendon Laboratory,  Parks Road,  Oxford OX1 3PU,  United Kingdom.
 Preferred Email: catling@atm.ox.ac.uk (janet)
		  catling@isams.dnet.nasa.gov (internet)
 My Law of Optimism:"The sooner you fall behind, The more time to catch up"
................................................................................
From: lungtt@gus26.ecn.purdue.edu (Terence T. Lung)
Newsgroups: sci.engr
Subject: Re: information about finite-element packages
Date: 7 Sep 92 02:34:58 GMT
Organization: Purdue University Engineering Computer Network

In article <1992Sep1.135543@cs.utwente.nl> dikker@cs.utwente.nl (Frank Dikker) writes:
>We are looking for a finite element package that has the following features:
>
>* A standard library of finite-elements
>* Free definitions of our own elements.
>* Possibilities to link with other sofware
>* It should run on a sun-4 (sparc)
>* Graphical representations
>* An extended set of solution methods
>* ...
>
>I hope someone can give me advice about such software. Your reactions will be
>highly appreciated.
>
>Frank Dikker

How about ABAQUS?  Does it run on a sun-4?  I don't know.  The rest of your
criteria is met nevertheless.

Terence
From: ifan24@IASTATE.EDU (Ifan Alki)
Newsgroups: sci.engr
Subject: Question on Yield strength of aluminum
Keywords: yield strength, aluminum
Date: 12 Sep 92 14:41:21 GMT
Reply-To: ifan24@IASTATE.EDU (Ifan Alki)
Organization: Iowa State University

Hi everybody,

I have a question about the yield strength of aluminum.
I have a stress-strain diagram of a tensile test.
The question is "How to determine the yield strength of the alumium base on that
diagram"
For high strength steel we take .2% offset strain or .5% strain extension under
load.
Is this applicable to aluminum ?
Please also give me the sources about this matter.

Thanks in advance.
      +                  
                +       ++++        ++   ++
      +       +  +    +    +      +  + +   +
      +      +      +      +         ++    +
      +      +++   +       +         +     +
      +      +      +      +  +      +     +
      +      +        +++++  +       +     +
 
  ifan24@vincent.iastate.edu






 
Newsgroups: sci.engr