Page 871 - Mechatronics with Experiments

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MATLAB , SIMULINK , STATEFLOW, AND AUTO-CODE GENERATION 857
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Stateflow rather than in Simulink . In typical usage, a SF model is a block in a Simulink ®
model. The SF model is called the chart. The chart is used to represent various modes of
operation.
The mathematical modeling paradigm in Stateflow is based on the concept of oper-
ating modes. The operating modes are called the states, in which various logics are imple-
mented and are called actions.The transitions between these states are based on some
events and/or conditions.
The programmer needs to express the problem at hand in these terms;
1. states,
2. actions,
3. transitions and junctions,
4. conditions,
5. events,
6. data.
Events and data are non-graphical objects of Stateflow, whereas the others are graphical
objects.
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Stateflow is started from MATLAB command window by typing (Figure A.31)

>> stateflow
This brings up the “sflib” (Stateflow library) window. The development tools for Stateflow
include the
1. Stateflow Editor
2. Model Explorer, and
3. Debugger.

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FIGURE A.31: Stateflow windows in MATLAB .