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**Topic under **Control Mode

**Source:** www.diee.unica.it

**File size:** **855.6 KB**

**File type:** **pdf**

**Last download on:**
Sat Mar 25, 2017 02:46:14 PM

__Short Desciption__:

Theory to implementation, This Master thesis deals with the design of the program for a control unit using Supervisory
Control Theory (SCT) introducing a systematic methodology for development of event-
driven supervisory control systems. Different difficulties arises in physical implementation
of SCT and unfortunately there is still a gap between the theoretical development and the
number of applications of SCT in the industry.

__Summary__:

he approach presented in this thesis is
based on the introduction of different behavioural models among the entries of the SCT.
Both input and output electric signals of the PLC have been modelled to take into account
the gap between an automaton event and a logic signal. A model of the interactions between
the control unit and the process is included in the Plant model to facilitate the extraction of
the controller behaviour from the supervisor. An approach to obtain from the Supervisor a
Controller
straightforwardly implementable is presented. The Controller is implemented as
a Mealy machine. The obtained Controller is exploited as input for the automatic generation
of the PLC control program. Two Use Case Studies have been treated to experiment the
presented methodology. The first one deals with the control of an automatic gate for a car
park while the second one controls a pick and place station. Both the use case studies are
high detailed with built automata models and generated PLC control code

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"Control system design using Supervisory Control Theory"

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