How to reduce step size or tighten error tolerance?

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Hoda abuzied 2012 年 8 月 27 日

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https://jp.mathworks.com/matlabcentral/answers/46783-how-to-reduce-step-size-or-tighten-error-tolerance

Hello, All

I got the following error while simulating a quadrotor model pointing to integrator block in the quadrotor dynamics but i can't figure out how to solve it.

Derivative input 14 of 'QuadSim/Dynamics/Integrator' at time 0.0 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)

Thanks in advance