Simulation error while integrating a DE like dy/dt = 1/y.

Hello,

I've got a DE where there for example dy = 1/y. Because my initial value equals zero, 1/0 equals infinite. Simulink gives an error and tells me that:

Derivative of state '1' in block 'Simulatie_van_Wijk_nieuw/Inertia centrifugal pump/Integrator' at time 0.0 is not finite.

Can somebody help me with this problem (what can I do to work around this?) I still need my DE solved..

Answer 1

[Subin Kuttappan Stellal Mary]

As you had mentioned, Simulink is expected to give an error for 1/0.

As a workaround, you can try using 0+eps instead of 0 as the initial condition.

For more details about eps, refer the documentation link :

http://in.mathworks.com/help/matlab/ref/eps.html