Time dependent matrix entry

5 次查看（过去 30 天）

Christo van Rensburg 2021-10-26

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1572073-time-dependent-matrix-entry

评论： Christo van Rensburg 2021-10-28

Good day,

I've got a repeating sequence block with a 1x2-matrix for the durations of the output values. I however need to change these values, each entry, according to a ramp function that implements a linear increase. Below is a setup of the model I currently have in Simulink.

Any idea on how I can achieve this?

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Jon 2021-10-26

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1572073-time-dependent-matrix-entry#answer_817148

编辑：Jon 2021-10-26

Under source blocks in the Simulink library there is a block called Ramp. It seems like this should work for your purpose.

6 个评论
显示 4更早的评论隐藏 4更早的评论

Jon 2021-10-27

编辑：Jon 2021-10-27

I now see you want the square wave to go from say 0 to 5 rather than -1 to 1. You can just add 1 to the output of the sign block (using a sum block and constant) and then scale it with a gain block.

If you need the on and off (low and high values) duration to be different, you can offset the chirp signal (add a constant) before you apply the sign function.

Christo van Rensburg 2021-10-28

Hi John,

So I actually managed to figure it out on my own using the blocks shown below:

So what happens is:

Using a "Variable Pulse Generator" block to generate pulses with the frequency specified by the preceeding blocks.
I then simply add the appropriate gain (5).
Finally, each signal is delayed by a time stamp according to my requirement with the "Transport Delay" block.

But thanks once more for your time and effort to help me get to the bottom of this!

Christo

请先登录，再进行评论。