How to use a range of inputs in a Simulink Model

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Sam Fennell
Sam Fennell 2017-3-9
编辑： Sofia Carvalho 2017-3-14
Hello, I would like to use a range of inputs that change at specific time intervals in my Simulink model. I have an Excel table with solar radiation data and their corresponding times throughout the day. For example; 500W at 9am, 600W at 10am, 700W at 11am, etc. I would like to use this data as an input to my model and have it change automatically at 1 hour intervals as the simulation is running. What is the best way to do this? Any help would be much appreciated. Thank you
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Astarag Chattopadhyay
Astarag Chattopadhyay 2017-3-14
You can explore these two options:
1) Write a MATLAB function that updates a variable (may be structure or Cell array) in the base workspace after the required interval. Use this variable as the input to your Simulink model.
2) Add a storage block (may be RAM) in your model and store all your data into it. After the required time interval increment the address and give the write enable.

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Sofia Carvalho
Sofia Carvalho 2017-3-14
编辑：Sofia Carvalho 2017-3-14
I'm doing exactly the same thing, have you come to a solution? I have 8760 radiation values correspondent to the 8760 hours in a year. I input a timeseries variable from the workspace to Simulink with 2 columns (1st one with dd-mm-yyy HH:MM:SS and the 2nd one with Wh/m2 values), however when I graph the values the time series is converted from 0 to 10 and the radiation values are not the same as in the workspace. Any ideas?
Why does the data from matlab (figure 1) turns into the data seen in figure 2 in Simulink?

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