Simulink presenting a convergence error
12 visualizaciones (últimos 30 días)
Mostrar comentarios más antiguos
Lucas duboc
el 10 de Abr. de 2024 a las 16:13
Comentada: Lucas duboc
el 11 de Abr. de 2024 a las 0:13
I made a simple simulaltion of a x=Asen(wt) function in simulink using differential equations, but instead of a constant senoidal curve, it is converging to zero, although its very slow (w needs to be high or simulation time needs to be very long), here is the simulink code, and the scope output, the only custom things to simulink is a fixed simulation step of 0.01.
Original function is A*sin(wt), with A=2 and w = 60 modeled as a differential equation of x''(t) = -w² *x(t), x'(0) = Aw and x(0) = 0
I think the problem is a rounding error since it is very slow, but I don't know how to fix it
0 comentarios
Respuesta aceptada
Paul
el 10 de Abr. de 2024 a las 21:51
Setting the fixed-step solver to ode8 seems to work pretty well for the problem shown in the question with a fixed step of 0.01. Don't know how well ode8 will work for other choices of w and step size, but I suspect it will be better than any of the others for this particular system.
Más respuestas (0)
Ver también
Categorías
Más información sobre General Applications en Help Center y File Exchange.
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!