Hi everyone i need "Run time control block" help me . Let me ask what is the value of that constant "initial" i don't understand it

Answer 1

[Walter Roberson]

https://www.mathworks.com/help/simulink/slref/switch.html

The Switch block passes through the first input or the third input based on the value of the second input. The first and third inputs are called data inputs. The second input is called the control input. Specify the condition under which the block passes the first input by using the Criteria for passing first input and Threshold parameters.

So in context, if the clock2 is >= 20 then the constant is passed, and if clock2 < 20 then the output limited pu1 is passed.

[hai]

Thank you very much, in short, in normal state, the signal is calculated through the first input, but when the condition at input 2 is met, the signal is calculated through the third input.

[Fangjun Jiang]

The opposite.

when t<20, the "initial" value is passed through.

"initial" is a variable. Its value is usually defined in the base workspace. You can check its value in the MATLAB Command Window.

[Walter Roberson]

Ah, I was reading "first" port as numbering from the bottom, but it could easily have been numbered from the top.

[hai]

Thank you very much