Singularity error - Simulink

67 次查看（过去 30 天）
Harvijay Raj
Harvijay Raj 2018-2-13
回答： Suhan 2018-2-19
An error occurred while running the simulation and the simulation was terminated Caused by: Derivative of state '1' in block 'XXXXXX/Receiver/pre-amp/CTLE mode 2/Transfer Fcn15' at time 3.3003349235944607E-9 is not finite. The simulation will be stopped. 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)
Please help.
  5 个评论
显示 3更早的评论
Harvijay Raj
Harvijay Raj 2018-2-13
I am working on Serdes model, I have quite a few Xfer func that you might be interested in seeing.
Harvijay Raj
Harvijay Raj 2018-2-13
So r u from Mathworks? R u setting up some remote debug session?

请先登录，再进行评论。

请先登录，再回答此问题。

回答（1 个）

Suhan
Suhan 2018-2-19
Hi,
The singularity issues occur due to model instabilities. Instabilities may occur in a model due to a wide variety of reasons and one of them is the reference is too quick that the plant does not have enough time to respond and runs into singularities. This can be eliminated by putting in a filter on the reference signal.
Below is information on three tools that may assist you in further improving the model stability, if you are not already familiar with them:
1. Solver Profiler: The Solver Profiler can help you visualize your model dynamics and see where they may be unstable. Using the Solver Profile is described at this link: https://www.mathworks.com/help/simulink/ug/examine-solver-behavior-using-solver-profiler.html
2. Log the Simulink states, so you may view their values after running the simulation (perhaps stop the simulation before the error or use the above approach to remove the error): https://www.mathworks.com/help/simulink/examples/logging-states-in-structure-format.html
3. Use Stepping Options to pause the simulation and view signal values before the error occurs: https://www.mathworks.com/help/simulink/ug/simulation-stepper-interface.html

类别

在 Help Center 和 File Exchange 中查找有关 General Applications 的更多信息

标签

产品

Community Treasure Hunt

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

Start Hunting!

Translated by