CST MWS maximum number of pulse widths simulated,solver stopped

來源：更新時間：2024-07-31 閱讀：

請教高手，在用T模塊仿真一個諧振腔時，總是出現(xiàn)這樣的警告：
maximum number of pulse widths simulated, solver stopped
please note that the steady state energy criterion has not been satisfied.
maximum number of pulse 已經(jīng)加到80還不行。
請教一下怎么處理啊？
謝謝了！

要學(xué)會搜索啊！
CST MWS計算箱體屏蔽效能的問題|/read-htm-tid-64002.html

對于初學(xué)者來說，這個警告好像一直是比較頭疼的

CST MWS幫助文件《Transient Solver Problem Handling》。
Maximum number of pulse widths simulated, solver stopped. / Maximum simulation time reached, solver stopped. Please note that the steady state energy criterion has not been satisfied.
The transient solver operates with a time pulse as excitation, and the simulation stops when one of the following conditions are met:
Either the remaining energy in the calculation domain as well as the port signals have decreased to the steady state value specified on the time domain solver parameter page in the Accuracy field.
The simulation time reaches the maximum solver duration, either defined as Time, Number of pulses or Propagation distance on the Steady state tab on the Special Time Domain Solver Parameter page.
The warning appears when the latter condition was satisfied first before the accuracy level has been reached. This means the energy level remaining in the structure is still bigger than the specified steady state value. Usually this is the case for resonating (energy stays inside the structure for a long time) or large structures (it takes a long time for a pulse to penetrate through the structure). The extra energy would appear as a truncation error, which causes some ripples in the S-parameter curves.
Recommended solutions are the following:
For non-resonating structures, the maximum solver duration setting can be adjusted, with the appropriate choice of defining number of pulses or a time or propagation distance setting.
For resonating structures a much better approach would be to activate the Autoregressive Filter (see advanced Topics manual) on the AR Filter tab on the Special Time Domain Solver Parameter page, which allows to shorten the simulation time and in addition to avoid the truncation error.

拜讀了管理員帖子，感覺非常強大。
有兩個問題請教一下：
1、我已經(jīng)用過AR濾波器了，過濾后的頻率與過濾前的偏差比較大，并且誤差最多到E-9量級。
2、工作站的計算速度與普通機器的速度差距多大？我的電腦是i5處理器，8G內(nèi)存。
謝謝了！

1、還是希望你能上傳模型，因為用T仿真強諧振問題一直是比較頭疼的，個人認為并不是AR可以解決的；
2、計算速度，如果配置相同，應(yīng)該沒什么區(qū)別吧
我的經(jīng)驗是：在內(nèi)存足夠的情況下，CPU核數(shù)越多計算越快，但并不是完全線性的

附件是我的模型。
我仿真的結(jié)構(gòu)是一個諧振腔鏈，在最后一個腔的末端加入了一個探針，利用探針激勵場來看腔鏈的頻率和場分布。
腔鏈的工作頻率是2998MHz。
謝謝了！

打開你的模型出錯。只能看到一部分模型
既然是諧振腔，用T估計很難，有多大?沒用F試試？

試試這個。
我用F模算過，可是結(jié)果就跟一把梳子似的。但是用T模算的還算正常。
謝謝。

模型應(yīng)該是一個腔體，打開文件提示open failed。

Global mesh properties：35、35、10，不理解設(shè)置這么高網(wǎng)格的意義是什么……。重新設(shè)置為10、10、10，取消metal edge refinement factor。選擇enery based adaptive mesh refinement，激活online AR-Filter。