Hey there, I need some help with this error. Would anyone be willing to provide guidance?

2 visualizzazioni (ultimi 30 giorni)
How do I reduce the fixed step size or tighten the error tolerances?

Risposta accettata

Sam Chak
Sam Chak il 9 Ott 2023
For a fixed-step solver, you can modify the settings in the Solver tab of the Configuration Parameters dialog box (see image below). However, when it indicates that the derivative of the state at a certain time is not finite, the issue may be caused by a singularity in the solution. Singularities typically occur when the model contains division-by-zero terms.
If this is under the direct control of a model designer, you can alter the mathematical expression that leads to the zero in the denominator. If the model is constructed in accordance with the governing laws of physics, where you cannot alter the mathematical principles (e.g., black holes or kinematic singularities of robot arms), then you can attempt a coordinate transformation or apply an externally-manipulated input signal to the system to actively avoid the singularity.
  3 Commenti
Danikha Shyken
Danikha Shyken il 17 Ott 2023
How can I confirm that this is the case, and what steps should I take to resolve it?: If this is under the direct control of a model designer, you can alter the mathematical expression that leads to the zero in the denominator. If the model is constructed in accordance with the governing laws of physics, where you cannot alter the mathematical principles (e.g., black holes or kinematic singularities of robot arms), then you can attempt a coordinate transformation or apply an externally-manipulated input signal to the system to actively avoid the singularity.
Sam Chak
Sam Chak il 17 Ott 2023
I suggest that you show what's under the state-space block mask so that we can analyze the dynamics.

Accedi per commentare.

Più risposte (0)

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by