HDTenEightyP/NetNews huggingface dataset:
From: cnar08@vaxa.strath.ac.uk
Newsgroups: sci.engr.control
Subject: Program-CC to Postscript
Date: 27 Jan 93 16:22:38 GMT
Organization: Strathclyde University VAX Cluster

Program-CC only does a screen dump directly to the
printer or if you use a TSR program you can save 
the screen dump to a file and print it later.

Does any one know if there is a way to convert 
Program-CC files to postscript. The reason I want
files in postscript is so that I can directly
put them into a document instead of "cutting
and pasting" later. 

Any help would be much appreciated.

---------------------------------------------------

Mahmood Akbar
Industrial Control Centre,
University of Strathclyde
Glasgow G1 1QE
e-mail cnar08@uk.ac.strath.vaxb

---------------------------------------------------
From: tsu1@vax.oxford.ac.uk
Newsgroups: sci.engr.control
Subject: TIME SERIES FORECASTING/KALMAN FILTER
Date: 26 Jan 93 20:45:42 GMT
Organization: Oxford University VAX 6620


I am working in a project dealing with the forecasting of traffic congestion
in urban road networks, for use in a real time drivers' information system.
I used formulations like

^y(t+1) = a1.y(t) + a2.y(t-1) + ..... +
          b11.q1(t) + b12.q1(t-1) + ..... +
          b21.q2(t) + b22.q2(t-1) + ..... +
            .......
          c1.yh(t+1) + c2.yh(t) + ...
          d11.qh1(t) + d12.qh1(t-1) + ..... +
          d21.qh2(t) + d22.qh2(t-1) + ..... +         (1)
         
          
where ^y(t+1) the predicted level of flow at time t+1 at the link of interest
       y(t)   the measured flow at the link of interest
       qi(t)  the measured flow at link i upstream of the link of interest 
       yh(t)  historical flow for the link of interest at time t
       qhi(t) historical flow for link i at time t
              (historical flow (t) = average flow(t) over the last few days) 

and kalman filter theory to identify the system parameters which are assumed to
be time varying.
I used several formulations (differnt terms of the AR and MA components)  but
I did not find any formulation that consistently performs better.

I then tried to predict the ratio between predicted and historical 
flow ^ry(t+1)=^y(t+1)/yh(t+1) and then from this ratio to predict the ^y(t+1)
using formulations like
  ^ry(t+1) = A1.ry(t) + A2.ry(t-1) + ...
             B11.rq1(t) + ........ 
             B21.rq2(t) + ....

   ^y(t+1) = ^ry(t+1).yh(t+1)

where   rqi(t) = qi(t)/qhi(t)

I found that the latter approach consistently performs better than the former.
There is often a regularity in the patterns observed every day, but given the
fact in both formulations I used historical info I didn't expect significant
differences in the forecasts.
Can anybody help me on how I can a develop a theoretical proof of this outcome?
Do you know of any papers discussing a relevant subject?


Thanks very much,

Petros Vythoulkas
TSU1@vax.oxford.ac.uk
Transport Studies Unit
University of Oxford
Newsgroups: sci.engr.control,sci.engr.civil
From: sarafrk@vuse.vanderbilt.edu (Rajeev K. Saraf)
Subject: Do people talk about traffic control in this group
Originator: sarafrk@cee1
Organization: Vanderbilt University School of Engineering, Nashville, TN, USA
Distribution: usa
Date: Tue, 26 Jan 1993 18:05:56 GMT

Hi netters,
I am in transportation engineering working in area of real time traffic
control. I was wondering if users in this group discuss about this area,
or if this topic falls outside the the scope of this group.
Thanks,


Rajeev Saraf
sarafrk@vuse.vanderbilt.edu
From: dcm@pd.org (Howard Hunnicutt)
Newsgroups: sci.engr.control
Subject: Need supplier and support for indstrial PC's for process control
Date: 21 Jan 1993 20:50:44 GMT
Organization: Emory University, Dept of Math and CS
NNTP-Posting-Host: noel.pd.org
X-Newsreader: TIN [version 1.1 PL6]

We need a good source and support for process control 486's with the following:

19" rack mounted with brackets
withstand temperatures between 10 and 65 degrees Celsius
shock resistant to 50G
vibration resistant to 5G

Thank you for taking a gander at this.

Georgia-based supplier would be even better.
Newsgroups: sci.engr.control
From: adams@nefeli.berkeley.edu (Adam L. Schwartz)
Subject: Re: Convex Quadratic Programming
Organization: U.C. Berkeley -- ERL
Date: Fri, 22 Jan 1993 18:16:35 GMT

In article <C191Mo.Aws@ecf.toronto.edu> rairan@ecf.toronto.edu (RAI Ranjan) writes:
>  Hello.  Does anyone know of interesting applications of CONVEX quadratic
>programming in control?  References would be appriciated.

LQG is an interesting convex quadratic programming problem.

-Adam
From: vergara@jupiter.informatik.uni-dortmund.de (Victor Vergara)
Newsgroups: sci.engr.control
Subject: multi-model
Date: 22 Jan 1993 15:41:22 GMT
Organization: University of Dortmund, Germany
Distribution: world
NNTP-Posting-Host: jupiter.informatik.uni-dortmund.de


I would like to get any information on the state of the art
of multi-model systems.

I read Ackermann's book "Abtastregelung" und Jedner & Unbehauen's
papers, but the references are not enough.

I am wondering if anyone coul send me references about papers
on this subject.

Thanks!!

	vergara@jupiter.informatik.uni-dortmund.de 


Newsgroups: sci.engr.control
From: grigoria@gn.ecn.purdue.edu (Karolos Grigoriadis)
Subject: Re: HELP: Simul. Diag of matrices
Organization: Purdue University Engineering Computer Network
Date: Sat, 23 Jan 93 18:35:25 GMT

In article <1993Jan23.150935.29306@cronkite.ocis.temple.edu> neilfp@astro.ocis.temple.edu (Neil F. Palumbo) writes:
>
>Can anyone suggest a good reference on the simultaneous diagonalization of
>several matrices? Thanks...
>
>			Neil

A set of diagonalizable matrices is simultaneously diagonalizable iff
the matrices commute pairwise.
For details check the (excellent) book: Matrix Analysis by R.A. Horn and
C.R. Johnson (Cambridge Univ. Press)

Karolos Grigoriadis
Space Systems and Controls Lab
Purdue University
From: mek@guinan.psu.edu (Mark E. Kotanchek)
Newsgroups: sci.engr.control
Subject: Re: Do people talk about traffic control in this group
Date: 26 Jan 93 20:01:59 GMT
Distribution: usa
Organization: Penn State Center for Academic Computing

In article <C1H3Lw.57r@vuse.vanderbilt.edu> sarafrk@vuse.vanderbilt.edu  
(Rajeev K. Saraf) writes:
> Hi netters,
> I am in transportation engineering working in area of real time traffic
> control. I was wondering if users in this group discuss about this area,
> or if this topic falls outside the the scope of this group.
> Thanks,
> 
> 
> Rajeev Saraf
> sarafrk@vuse.vanderbilt.edu

IMHO, control is control is control. Discuss away.

Actually, my IEEE section speaker a few months back spoke on Intelligent  
Vehicle Highway Systems and Intelligent Vehicles. A fascinating  
multi-disciplinary problem with societal as well as technical issues. Many  
of the defense contractors are trying to address this market because their  
experience in development of maintainable and reliable complex systems is  
applicable since this is not a problem you want to have implemented by an  
academic or free-lance software hacker. (NOTE: I said IMPLEMENTED not  
STUDIED!!! ;)

Mark.
--
Mark Kotanchek
Guidance & Control Dept - 363 ASB
Applied Research Lab/Penn State
P.O. Box 30
State College, PA 16804
Newsgroups: sci.engr.control
From: scallan@sweetpea.jsc.nasa.gov (-BJS-)
Subject: Robust Controller Synthesis w/ MATLAB
Followup-To: sci.engr.control
Keywords: robust control matlab
Organization: MDSSC
Date: Thu, 28 Jan 1993 14:43:46 GMT


   I have a question for those of you readers who have performed
optimal controller synthesis using the robust control and mutools
toolboxes available in matlab.  I am attempting to design a controller
for an "improper" system, i.e., the frequency response does not
roll-off at high frequencies.  Is there any such requirement on the
plant in order to use the 'hinfsyn', 'h2syn', musynfit, etc.
functions.

   The problem I am encountering does not seem to be related to this; I
have problems with the row rank test on the matrix, [a b1; c2, d21].
This matrix ends up being (7x5) and thus cannot have full row rank.
Obviously, I have formulated the problem incorrectly, but I am not sure
where I've gone astray.  There are three measurements available to the
controller and the "Z" vector (the measurements to be kept small) has
one measurement.  The performance specification (Wp) is second order,
is this okay??  Can anyone give me possible avenues to explore which I
might have missed??  The requirement indicates that the number (n+p)
must be equal to or less than (n+m1+m2), where;

	n  = number of states,
	p  = number of outputs,
	m1 = number of exogenous inputs,
	m2 = number of controls


   Any ideas would be greatly appreciated either by e-mail or via
posting.  Thanks in advance.

					Befuddled but not Defeated,

					-BJS-


-- 

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Brian J. Scallan,				  scallan@sweetpea.jsc.nasa.gov

When angry, count four; when very angry, swear.
Pudd'nhead Wilson - M. Twain

The opinions expressed 
should not be interpreted as those 
of my employer or any other (semi-)rational entity.			{-BJS-}
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Newsgroups: sci.engr.control
From: chandram@ece.scarolina.edu (Rajagopal Chandramohan)
Subject: NG for Process control
Keywords: Process control
Organization: USC  Department of Computer Science
Date: 25 Jan 93 06:08:30 GMT

Hi netters,

I am interested in finding out about any news group on Process Control
(if it exists).

Rajagopal Chandramohan

(chandram@ece.scarolina.edu)
From: neilfp@astro.ocis.temple.edu (Neil F. Palumbo)
Newsgroups: sci.engr.control
Subject: HELP: Simul. Diag of matrices
Date: 23 Jan 93 15:09:35 GMT
Organization: Temple University
X-Newsreader: TIN [version 1.1 PL8]

[ Article crossposted from sci.math ]
[ Author was Neil F. Palumbo (neilfp@astro.ocis.temple.edu) ]
[ Posted on Sat, 23 Jan 1993 02:28:59 GMT ]


Hi All,

Can anyone suggest a good reference on the simultaneous diagonalization of
several matrices? Thanks...

			Neil
Newsgroups: sci.engr.control
From: mike@sherlock.med.ge.com (Michael Dyer)
Subject: "Light Curtain" info request
Keywords: light curtain
Organization: GE Medical Systems, Magnetic Resonance
Distribution: usa
Date: Thu, 21 Jan 93 17:05:24 GMT

I need to protect a pinch point on an enclosure that I've developed
for X-Radiation testing. The best solution I've seen is two light 
curtains at right angles -- to protect both the side approach and
the top approach to the pinch point.

I have information on two vendors and I'd like comments on what other
vendors may have good products and any actual usage information you
might have on the vendors I do know about.

	Scientific Technologies, Inc (STI) is proposing use of their 
	FlexSafe(tm) product. It would use one device, consisting of
	two segments to cover the side and top.

	Data Instruments/Wintriss Controls Group is proposing two of
	their Shadow V(tm) Light Curtain, one for the side, the
	other for the top.

An initial pass at the spec sheets and quotations give the edge to STI --
but I have no reliability or usage experience with either.  I would
appreciate comments.  If requested I will post/e-mail a summary.

Thank you for any help.
			-- Mike
			mike@sherlock.med.ge.com

--
---------------------------------------------------------------------------
   Michael J. Dyer                      Telephone:   AT&T 414.647.4044
   General Electric Medical Systems           GE DialComm  8 *767.4044
   P.O. Box 414  Mail Stop 12-27            Sect'y   AT&T 414.647.4584
   Milwaukee, Wisconsin  USA 53201                         8 *767.4584
   internet:  mike@sherlock.med.ge.com
Newsgroups: sci.engr.control
From: grigoria@gn.ecn.purdue.edu (Karolos Grigoriadis)
Subject: Re: Convex Quadratic Programming
Organization: Purdue University Engineering Computer Network
Date: Sat, 23 Jan 93 03:52:08 GMT

In article <BENCZE.93Jan22121555@isl.stanford.edu> bencze@isl.stanford.edu (William J. Bencze) writes:
>>> On Fri, 22 Jan 1993 09:42:23 GMT, rairan@ecf.toronto.edu (RAI Ranjan) said:
>
>>   Hello.  Does anyone know of interesting applications of CONVEX quadratic
>> programming in control?  References would be appriciated.
>
>  Take a look at "Linear Controller Design, Limits of Performance" by
>Stephen Boyd and Craig Barratt. (Prentice Hall, 1991).  They show that a
>wide range of common controller design problems can be described as convex
>optimization problems.
>
>-Bill
>--
> Bill Bencze                               bencze@isl.stanford.edu
>
>
>
>

See also:

J.C. Geromel, P.L.D. Peres and J. Bernussou, "On a Convex Parameter Space
Method for Linear Control Design of Uncertain Systems," SIAM J. Control
and Optimization, 29, 2, 381-402, 1991.

P.P Khargonekar and M.A. Rotea, "Mixed H_2/H_oo Control: A Convex
Optimization Approach," IEEE TAC-36, 7, 824-837, 1991.

....and references therein...


Karolos Grigoriadis
Space Systems and Controls Lab
Purdue University


Newsgroups: sci.engr.control
From: rairan@ecf.toronto.edu (RAI Ranjan)
Subject: Convex Quadratic Programming
Organization: University of Toronto, Engineering Computing Facility
Date: Fri, 22 Jan 1993 09:42:23 GMT

  Hello.  Does anyone know of interesting applications of CONVEX quadratic
programming in control?  References would be appriciated.

-- 
Ranjan Rai                             <rairan@ecf.toronto.edu> 
Engineering Science 9T3                <rr@odin.control.toronto.edu> 
University of Toronto
From: ics.jjmc@Control.Com (J. J. McCarthy)
Newsgroups: sci.engr.control
Subject: Senior Software Process Improvement Engineer
Date: 26 Jan 93 17:18:36 GMT
Reply-To: ics.jjmc@control.com
Organization: Industrial Computing Society

Honeywell - Industrial Automation and Control (IAC) 
has a position open in Ft. Washington (Philadelphia) 
for a Senior Software Process Improvement Engineer. 

In this position, you will work with others in the business to: 

1) Lead the definition of world-class software development processes and
   tools suitable for real-time control system product development and
   delivery; 

2) Lead the implementation and deployment of the defined software processes
   and tools, and 

3) Maintain and manage software metrics.

MINIMUM ACCEPTABLE QUALIFICATIONS:

B.S. in computer science or engineering;

At least eight years of experience in software design and development
 (preferrably, embedded/real-time software);

At least two years of experience with the 
   development and deployment of software development and maintenance process,
   procedures and methods, 
   software productivity and quality metrics collection and management, 
   computer-aided software engineering tool selection, deployment and use.


If you meet the minimum qualifications, fax your resume to: 
   David Eisner, Director
   Process Controllers & I/O
   Honeywell-IAC
   1100 Virgina Drive
   Fort Washington, PA-19034.
   Fax #: 215-641-3850


jjmc
Newsgroups: sci.engr.control
From: brucew@hilbert.coe.northeastern.edu (Bruce Wilson)
Subject: Call for Papers: Automated Modeling
Keywords: automated modeling
Organization: Northeastern University
Date: Fri, 22 Jan 1993 15:32:22 GMT

CALL FOR PAPERS
 
SYMPOSIUM ON AUTOMATED MODELING FOR DESIGN
 
THE 1993 ASME WAM 
NOVEMBER 28 - DECEMBER 3, 1993 
NEW ORLEANS
 
The Modeling and Identification Technical Panel of the Dynamic Systems
and Control Division of ASME is sponsoring a symposium to address the
current issues in developing automated modeling environments for
design.  The symposium will be held at the 1993 ASME Winter Annual
Meeting.
 
Topics: The topics to be addressed may include: general modeling,
analysis and simulation methodologies (both the synthesis and the
selection problem) for creating models for What If? design studies.
Methods for computing relevant performance metrics and integrating
these metrics with design specifications (e.g., with QFD
technologies).  Techniques for model validation/verification; model
reduction and augmentation strategies; and definitions of model
quality.
 
Objectives: The objectives of the symposium include: providing a forum
for researchers from the physical system modeling, automated modeling
and qualitative reasoning, design, design theory and methodology, and
CAE (simulation) communities to discuss their ideas and to compare
their goals, strategies, vocabulary etc.  To encourage participants-to
identify important research issues and engineering hurdles.  To
introduce new researcher to the field.
 
If you have any questions or suggestions, please contact Prof. Jeff
Stein at the address or phone numbers given below.
 
Papers accepted for publication are also eligible for publication in
the Journal of Dynamic Systems Measurement and Control.  Those wishing
to select this option should indicate so in a cover letter submitted
with their manuscript.  Because the review process for the Journal
takes longer than the review for the symposium, manuscripts will be
sent on to the Journal office at the conclusion of the symposium
review process along with the reviews obtained from the symposium
review.
 
Abstract (<300 Words) due March 8, 1993.
Notification of Abstract Acceptability March 15, 1993.
Manuscripts (4 copies) due May 1, 1993.
Notification of Manuscript Acceptability June 15, 1993.
Final manuscript due on Mats July 15, 1993.
 
Send all material to:
 
Prof. Jeffrey L. Stein
Dept. of Mechanical Engineering
2250 G.G Brown
The University of Michigan
Ann Arbor, MI 48109-2125
Tel # (313) 936-3336
FAX #(313) 747-3170
Email:J._Stein@Um.CC.Umich.Edu
 
 



Newsgroups: sci.engr,sci.energy
From: paul.burnett@pcs.sj.ca.us (Paul Burnett)
Newsgroups: sci.engr
Subject: Specifying Tolerances
Date: 24 Jan 93 05:52:00 GMT
Reply-To: paul.burnett@pcs.sj.ca.us (Paul Burnett)
Organization: PCS-BBS - San Jose, CA - 408-270-4085

TO: burstedt@oscar.UUCP

  >I am not concerned about the critical dimensions that I
  >specify on the drawing, but how can I protect the design intent of the
  >features that I do not specifically tolerance.

  >...the idea is to use as few dimensions as possible while
  >still requiring the molder to give us parts that are within
  >specification.

DB>What concerns me the most is how to tell the molder that I will inspect
  >the first article parts.  I need to be able to show the molder if he has
  >not kept the tolerances that we agreed upon.

Sounds to me like you want something for nothing.  The only way you can
"protect the design intent" _is_ to specifically tolerance every
dimension.  Can you say _why_ you want "to use as few dimensions as
possible"?  You can't "show the molder he has not kept tolerances" if
you don't _give_ the molder the tolerances.  If I was a molder, I would
agree upon tolerances on a signed drawing, and nothing else.
---
 . QMPro 1.0 41-8688 . ...from San Jose, CA
From: mch@anu.edu.au (Mick Cardew-Hall)
Newsgroups: sci.engr
Subject: Manufacturing Process Modelling
Date: 22 Jan 1993 05:26:15 GMT
Organization: Interdisciplinary Engineering Program, ANU, Australia
Distribution: world
Reply-To: mch@anu.edu.au
NNTP-Posting-Host: 150.203.45.16


HI

I have just arrived in Australia from the UK. I'm particularly interested in finding out
who is interested in the area of  modelling of manufacturing processes, particularly
casting and forging and in particular within Australia. 

I have a fair idea of what is going on in the UK , Europe and bits of the US but I want to
hear from ANYBODY ANYWHERE who has an interest.

I'll compile a list and mail it to those that drop me a line.


Thanks 


Mick Cardew-Hall
Engineering Program
Australian National University
GPO Box 4
Canberra
ACT
AUSTRALIA

Tel:   06-2490330
fax:   06-2490506
email: mch@faceng.anu.edu.au


Xref: sparky sci.engr:2516 sci.engr.mech:823 uk.misc:3047 eunet.misc:680
From: clav08@ccsun.strath.ac.uk ("k.inshuk")
Newsgroups: sci.engr,sci.engr.mech,uk.misc,eunet.misc
Subject: Needing old spectrometer
Date: 21 Jan 93 20:05:32 GMT
Distribution: uk
Organization: University of Strathclyde

(This query has been posted previously in sci.engr and sci.engr.mech
newsgroups. But due to some error, first line was missing.)

Can anyone tell me, from where I can get a second hand "Computerised
or Non-computerised spectrometer" for metal testing. Please also tell
me the approximate cost, if possible.

Please send me the information on email address-

clav08@uk.ac.strath

Thanks in advance for help.

Kinshuk.
From: paul.burnett@pcs.sj.ca.us (Paul Burnett)
Newsgroups: sci.engr
Subject: AutoCAD in a hospital
Date: 24 Jan 93 07:33:00 GMT
Reply-To: paul.burnett@pcs.sj.ca.us (Paul Burnett)
Organization: PCS-BBS - San Jose, CA - 408-270-4085

TO: choy@skorpio.usask.ca

IAAT>What can you do with AutoCAD in a hospital?

Design hospitals - the facilities department designs everything from new
buildings to mundane minor renovations of existing space.  There is also
a new field of medical imaging using AutoCADD to let surgeons and others
see how reconstruction of various body parts can be done.
---
 . QMPro 1.0 41-8688 . ...from San Jose, CA
                                                                                                              
Newsgroups: sci.engr
From: seeta@eng.wayne.edu (Seetamraju UdayaBhaskar Sarma)
Subject: ... How to make a charger ...
Reply-To: seeta@eng.wayne.edu
Organization: College of Engineering, Wayne State University, Detroit Michigan, USA
Date: Mon, 25 Jan 1993 01:04:17 GMT


I have 2 laptop batteries (and only 1 laptop ;-((  )

The batteries cant be charged without placing them into the laptop and
pluggin'-in the charger ::: i.e., the company does not manufacture
a separate battery charger like the ones we are used to, for AA, AAA
and D- size cells.

To make things worse, each battery takes 5 to 6 Hrs to charge up.  That will
mean I have to wake up @ 3:00 AM to switch batteries, so that I have 2
fully charged batteries for working on my thesis in the library from
10:00 AM to 9:00 PM (Intermittenly, typing something into the laptop).

I have seen a lot of people discuss this on comp.sys.laptops much earlier...

I bought a 6V 400mA ORDINARY AC adapter, and would like to use it to
charge one of the batteries, while the other charges within the laptop.

((I am a student, and dont have money to have this made by somebody else.))

The 24cm long battery of my laptop has the ratings : 4.8V 5000mA/h

I know what 5000mA/h means, and I also know that continual charging of a
NICD battery only makes it hot.   So, should I hook the AC adapter to the
battery (The extra bettery cost me $100 :-(( )  and hope everything
works out well ?

What are the problems of using a 6V AC Adapter to charge a 4.8 V NICD battery?

And how do I POSSIBLY detect ``the end of charging'' using a multimeter, with
the multimeter connected in series in the charging circuitry.

Please answer whatever U can confidently answer about...

email or usenet repleis are equally good....

thanx a lot....

Seetamraju Udaya Bhaskar Sarma
(email : seetam @ ece7 . eng . wayne . edu)
Newsgroups: sci.engr.civil
From: ghorne@fox.nstn.ns.ca (Garth Horne)
Subject: Privitization of Sewer/Water Infrastructure
Keywords: Privitization Infrastructure
Organization: Environment Canada
Date: Tue, 26 Jan 1993 01:46:44 GMT

I am seeking leads on where to find information or articles on Privitization 
of Sewer and Water Infrastucture. Does anyone know of an institution, 
individual who would have information on this. Is there a location where 
this has actually occured.
Newsgroups: sci.engr.civil