COMPUTING & CONTROL

ENGINEERING JOURNAL

Information brokerage is a range of intermediary
services between customers and information sources.
In this scenario, automated online businesses emerge
and continually re-assess their market and self-organise
to fulfil their optimal business development. This
process is likely to involve increasingly active intelligent
elements in the global net.

Recent years have seen many process plants replace
hard desk operator interfaces with modern computer
based VDU interfaces. Alarm systems have similarly

undergone a transformation in their user interface. This
article describes some of the developments within the
UK coal-fired generating industry in moving to the new
technology, with specific reference to alarm displays.

Systems development has moved from treating systems
as purely technical problems, towards seeing systems
as parts of the user's environment. Stakeholders are
increasingly involved in requirements engineering,
which is balanced between co-operating with
stakeholders who own the requirements, and the need
for a controlled process of development. This article
assesses progress towards the possibly unreachable
goal of fully co-operative requirements engineering.

Simulation of ceramic firing 23
by S. H. Pulko, A. 1. Hurst, H. R. Newton,
J. M. Gilbert and A. J. Wilkinson
Ceramic firing is an irreversible process. Cracking and
excessive deformation reduce the yield which, at this
stage of manufacture, is undesirable both economically
and environmentally. A model has been developed to
predict the temperature fields within ceramic pieces
during firing and to simulate the associated ceramic
deformation.

Cyclic scheduling, formal methods
and information modelling 33
by Mark R. Whittington and Mike Shackleton
As real-time control engineering requirements become
ever more demanding, the engineer is forced to seek
new methods of analysis and design to maintain the
efficiency and quality of the real-time software
development process. This article discusses how
techniques originating in the field of information
modelling are being successfully developed for the
design and verification of flight safety-critical software

COMPUTING & CONTROL
ENGINEERING JOUR.NAL

VOL.10, NO.2, APRIL 1999


SPECIAL FEATURE: FID TUNING METHODS

Developing controllers through
a process off natural evolution 42
by Steve Daley

PID controller tuning 44
by Derek F. Atherton

Optinial PID tuning using direct
search algorithms 51
by S. Daley and G. F. Liu

Modiffied Smith predictor ffor
extruded diameter control 57
by Lorcan Smith

Bilinear controller with
PID structure 63
by K. J. Burnham, A. Dunoyer and S. Marcroft

Letter to the Editor 70

Implementation off a pan-European
TINA-compliant service
management platform 73
by Sohail Rana and Eric Sellin


Book Beviews 79

Seamless real-time control
systems: challenges ffor the
railway industry 81
by C. S. Chang, A. G. Bruce and 1. M. Hampton


Calendar 88

Beijing '99

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COMPUTING & CONTROL ENGINEERING JOURNAL
VOL. 10, NO. 3, JUNE 1999





UKACC and its contribution
to IFAC's world role 90
by Peter Fleming


Roger Hockney 92


Advanced gasifier control 93
by Roger Dixon



Portable codes reducing the
cost of obsolescence in
embedded systems 98
by Neil Audsley, lain Bate and Alan Grigg

Quantum computings
an introduction 105
by Tony Hey

An overview of Controller
Area Network 113
by M. Farsi, K. Ratcliff and M. Barbosa


The one-card trick—multi-
application smart card
E-commerce prototypes 121
by John Elliott

Systems engineering—
is it a new discipllfie? 129
by Euring Alan Stoddart

Book Review 135


Calendar 136

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