Transition from one Sub State to Another State

Hi All

I have two States

State A and State B

In State A there is one more State A1

In State B there are two more Sub State State B1 and B2

Output of B1 State has two values say x=2,x=3

When x=2 it Will transition to B2,

But When x=3 it should transition to State A1,

PLease can anyone tell which condition to add to transition to State A1

[Muthukumar Ganesan]

Hi,

There is an ambiguity in your question. What do you refer by output of State B1 ?

Please clarify to help you better

Thanks

Answer 1

[Purvaja]

Hey @Rithik,

I see that you want to change states with certain conditions. Transition from a sub state in a state to another sub state in another state will be similar to transition from a sub state to another sub state within same state. So, therefore we can simply use transition condition on transition arrows to change sub-states.

I have created the following dummy model as per the requirements given in question. There are 2 states “A” and “B”, with sub states, “A1”,”B1”,“B2” accordingly. State B1 inside state B has default transition, that uses the input given to the entire stateflow chart. There is an if-else condition that produces output “x” based on the input fed to the stateflow chart. And hence based on this output next state is determined.

Refer to the below diagrams for a better clarifications on the stateflow chart and how the result is achieved:

• Simulink Model consisting of dummy signals, showing input and output of “Stateflow” block:
• Stateflow diagram indicating states and sub-states, along with transition conditions:

For more information, kindly refer to the following MathWorks documentations:

1. Stateflow: https://www.mathworks.com/help/stateflow/getting-started.html
2. Transition Between operating modes: https://www.mathworks.com/help/stateflow/ug/transitions.html

To access the documentation for the MATLAB release you are using, please execute the following command in the MATLAB command window:

web(fullfile(docroot, 'stateflow/getting-started.html')) 
web(fullfile(docroot, 'stateflow/ug/transitions.html'))

Hope this helps!