How can I build a custom block in simscape representing nonlinear resistor having equation "v=(20/pi)​*atan(4000​*i)"?)

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Muhammad
Muhammad on 26 Aug 2013
Answered: Sabin on 23 Dec 2025 at 19:50
I get error "The units for both operands in relational operations must be commensurate,or one of the operands must be 0." when i try to write "v=(20/pi)*atan(4000*i)" in equation field.

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Answers (1)

Sabin
Sabin on 23 Dec 2025 at 19:50
As the error says, the units of both operands must be commensurate. Assuming v is in Volts and i is in Amps this condition is not met.

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