i want to add switch blocks that switches my input

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Adi Taib
Adi Taib 2023-6-5
回答： Jon 2023-6-6
hi,
i tried to add an switch block to my model to switch the input to the divider betwenn the look up table to a constat of 0.
im putting the conditions properly but everytime i running the simulation its stops me when it reaches the condition i gave him and i cannot understand why or how i can make that switching.
please help me :(
  2 个评论
Saurabh
Saurabh 2023-6-6
By Looking at the Image I can figure out that if voltageBattery value is greather than or equal to 470, then it will take the Constant value otherwise 0.
Am I right?
And Can You Provide a little bit more description about the error you are getting?
Adi Taib
Adi Taib 2023-6-6
youre right,
i want to make a switch with this condition that when voltageBattery value is greater then or equal to 470 that it will swithc the input of the Lookup table to the constant of 0.
the error that it show to me is:

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回答（1 个）

Jon
Jon 2023-6-6
The problem you have is not with the switch, but with the "algebraic loop" that is formed when the switch changes state.
Please read about algebraic loops here, https://www.mathworks.com/help/simulink/ug/algebraic-loops.html
Typically you will find a loop of blocks all with "direct feedthrough".
First check if you really intended to create an algebraic loop, or whether you are missing for example some integration or time delay block that would have broken the loop. If not, a typical work around is to add a small delay somewhere in the loop, but you should check that this would still give you physically meaningful results before you resort to this approach.

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