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Vecta
on Advanced Process Control |
| Technology
has revolutionised process control. Process
Automation Systems incorporate the memory, processor and
software technologies developed in the PC industry which
now allow users to apply a range of advanced techniques
to supplement the more traditional, essentially, single
linear variable PID, ratio, and feedforward control.
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APC
facilities typically include:
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- multi-variable
control (MVC), in which several variables
are used to compute the required level of
control;
- on-line batch
scheduling and automation, in which
production is automatically scheduled to take
account of orders, available equipment and
materials against specific business objectives
and constraints;
- non-conventional
advanced control, in which plant behaviour
is compared to a model and rules applied to bring
plant behaviour closer to that required;
- dynamics control, in which the
true transfer function of a plant unit is
modelled so that precise control can be achieved;
especially useful in extending life, reducing
energy consumption, or improving precision of
rotating machinery;
- matrix control,
a more extreme form of multi-variable control
where a range of measured variables and controls
are all assumed to affect the process outcome to
some degree;
- statistical
process control (SPC), in which statistical
techniques are used to detect and correct
potential deviations from desired performance;
- alarm
management, in which patterns of deviations
are analysed in order to identify and focus
operator attention on, the prime cause of an
alarm;
- operator advice,
in which patterns of process measurements are
analysed and translated into advice on
appropriate rectification actions by operators.
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Deployment of advanced
process control is often accompanied by use of
special-purpose or application-specific sensors or
on-line analysers. Business
management can also be improved by use of Manufacturing
Execution Systems (MES) to integrate information from
enterprise and plant level systems and incorporate
features such as order processing, production scheduling,
resource management, customer relationship management
(CRM), asset and inventory management, formulation
(recipe) management, predictive maintenance.
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Use of
advanced process control techniques can significantly
increase output, improve quality, and reduce both product
and plant whole-life costs but selection, deployment and
maintenance can be difficult. |
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Our Process Automation Experts Network is
dedicated to exploring developments in process automation
and enterprise integration. This involves projecting the
evolution of enterprise and plant level functionality and
identifying strategic business needs. It also requires
identifying issues related to supplier and partner
selection.
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Our extended network ensures we have the
expertise to help you solve just about any business or
technology problem.
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More info from: Andy.Booth@vecta5.com
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Vecta Consulting Limited, Mulberry House,
2 The Spinney,
Cottenham, CAMBRIDGE, CB24 8RN
Tel:
+44 (0) 1954 250222, Fax:
+44 (0) 1954 252333
ⰰ1-2014 Vecta Consulting Limited
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Vecta5
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