MATLAB: Extracting a response time in simulink

controlresponse timesimulink

So I have a control system in simulink which I have put into a test harness and I want to find the response time for that system to a step function. So I made a subsystem that returns a 1 when the demand and output systems are within 1% of each other and want to be able to extract a response time by taking the time taken for the 1 to appear away from the time at which the step function switches on but I'm stuck on how to do this. Any ideas?

Best Answer

Ok, I think you need Sources\Clock block.
It gives the simulation time. You can capture the time output of this block when your comparision satisfied.
-----OR-----
You can log the your data to workspace using To Workspace block selecting format as structure with time. Thus data will be saved in structure format at each time step.After simulation, using matlab commands you can find when the data reached to 1.
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