Restart signal from workspace in Simulink

Hi Community,

I extracted a signal from some data, so I have a signal and an corresponding time array in my workspace.

For now, I grab them in Simulink as

[time, signal]

array with a "From Workspace" block.

Is there any way to resart this signal/array during my simulation (without state flow)?

I tried using enabled/triggered subsystems, but this just stops/starts the signal from the point where it would be without the subsystem.

I would like to restart the signal from it's first datapoint.

Answer 1

[Fangjun Jiang]

Use an Integrator block and enable its "Reset" inport, which can receive your "reset" or "trigger" signal.

The input to the Integrator block is a Constant value of 1. Once reset or triggered, the Integrator block ouptut value will increase from zero at the same pace as the simulation clock.

Feed this "time/clock" signal to an 1-D Lookup Table block. The table data is your [time, signal] value.

Every time the clock starts from zero and increases, the output of the Lookup Table block will be this restarted signal.

[Phab]

Wow, I love these simple answers!

Perfect according to the KISS principle.

And every time I ask myself why I don't think of it myself.