Simulink:Aerospace 6 DoF Model Singularity with High Altitudes
I am using the "Simple Variable Mass 6DoF ECEF (Quaternion)" for a rocket model and everything is working great and as expected, except when the altitude (h) exceeds a certain value (around 180,000 meters). I end up getting an error:
"Derivative input 1 of ‘LV01/Simple Variable Mass 6DoF ECEF (Quaternion)/Calculate Velocity in Body Axes/ub,vb,wb’ at time 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)."
View post on imgur.comAny ideas? I’m kind of stuck since I need to get up to around 500 km. I couldn’t find anything that discussed limitations on with the model. Maybe there is another more appropriate model to use?I am using the "Simple Variable Mass 6DoF ECEF (Quaternion)" for a rocket model and everything is working great and as expected, except when the altitude (h) exceeds a certain value (around 180,000 meters). I end up getting an error:
"Derivative input 1 of ‘LV01/Simple Variable Mass 6DoF ECEF (Quaternion)/Calculate Velocity in Body Axes/ub,vb,wb’ at time 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)."
View post on imgur.comAny ideas? I’m kind of stuck since I need to get up to around 500 km. I couldn’t find anything that discussed limitations on with the model. Maybe there is another more appropriate model to use? I am using the "Simple Variable Mass 6DoF ECEF (Quaternion)" for a rocket model and everything is working great and as expected, except when the altitude (h) exceeds a certain value (around 180,000 meters). I end up getting an error:
"Derivative input 1 of ‘LV01/Simple Variable Mass 6DoF ECEF (Quaternion)/Calculate Velocity in Body Axes/ub,vb,wb’ at time 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)."
View post on imgur.comAny ideas? I’m kind of stuck since I need to get up to around 500 km. I couldn’t find anything that discussed limitations on with the model. Maybe there is another more appropriate model to use? simulink MATLAB Answers — New Questions
