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Transmission Shift Control

User: "Batuhan Coskun"
Batuhan Coskun
Altair Community Member
Updated by Batuhan Coskun

Hi everyone,

I have a question about tranmission shift control in Activate. I modeled engine, transmission and other subsystem for my model. But I didn't solve the gear shifting.

I use an Oml Block for gear control. In this block, gear and engine speed my input and selected gear output.  I need a current gear info. For this reason, I connect the output gear to input gear. But, when I connect them,, I get an Algebraic loop detected error.

I think, gear has an empty value, when start the simulation. Therefore, I check this value with isempty function. If empty, I define the value 1. However, it doesn't solve the problem. I get this error even if the function is empty, when we connect the output to the input. It doesn't allow them to connect.

Do you have any suggestion to solve this problem or use another method? 

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