Algebraic loop in Simulink
显示 更早的评论
Hi,
I have a problem in my simulink model, simulation fail because of an algebraic loop according to the simulation diagnostic. I tried a lot of things but it didn't worked.
I think simulink try to solve the "chicken an egg" problem, i tried to set an initial value but nothing worked.
Thanks for your help
采纳的回答
Sebastian Castro
2015-4-23
1 个投票
Instead of using Algebraic Constraint blocks to try guide the initial condition of the algebraic loop solver, you could try break the loop with a low-pass filter (Transfer Fcn block in the Continuous library).
Just make sure that the cut-off frequency of this filter is large enough that it doesn't affect the dynamics of your actual system.
For example, if you know your system has frequencies up to 1000 Hz, try put the filter frequency at like... 5000 Hz or so.
- Sebastian
2 个评论
jonas house
2015-4-23
移动：Walter Roberson
2025-1-20
Pallavi
2025-1-20
移动：Walter Roberson
2025-1-20
I have trying to simulate my model for 1ms but the algebraic loop doesnot allow it, I tried using unit delay it makes the system totally unstable. I tried adding low pass filter with cutoff frequency 300Hz. The low pass filter alone didnot eliminate the algebraic loop so I added unit delay followed by algebraic loop in the feedback; however my system is as unstable as before. Is there any solution?
更多回答（0 个）
类别
在 帮助中心 和 File Exchange 中查找有关 Array and Matrix Mathematics 的更多信息
产品
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
