Discussions

   I'm a student at Hochschule Bremen and I'm working with matlab/simulinkon these days but I got an error in the simulink model which is about
a strapdown inertial navigation system. The error says "Derivative input 1
of 'test/v_z_b1' at time 3.628075 is Inf or NaN.  Stopping simulation.
There may be a singularity in the solution.  If not, try reducing the step
size (either by reducing the fixed step size or by tightening the error
tolerances)". I tried to solve it by many ways but unfortunately I couldn't.

   Could you please help me or guide me for a suggestion to solve this error.

I've attached the simulink and matlab files and to run it, you have first to 

type data_tr0 to run in the command window of the matlab program and then 

type 100 which means 100 Hz after that open vect2bfn and test simulink files

run them respectively. 

Thank you for your cooperation.

    Best wishes,

    Saleh Al-Harrasi