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[版主推荐]ads优化时current EF得不了0，怎么办？

我是一个菜鸟

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注册：2010-10-21
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0楼发表于: 2010-11-03 19:01:02

仿真结果如下
Iteration/Trial #0:
  CurrentEF: 2499.99999991314
  Optimization variables:
    TL2.L = 22.2767e-03
    TL1.L = 22.2767e-03

  Nominal Optimization found no improvement in performance.
  The initial solution may be an optimal solution under the constraints.
  Possible remedies include:

    - Try a different optimization method. Perhaps Random first,
      Gradient second.
    - Check to insure optimization variables are sensitive to goals.
    - Relax the specification, later re-tightening.
    - For Random-type optimizers, increase the number of trials.
    - If the simulation fails to converge for Random-type optimizers,
      try using a Gradient method.
    - Check that the Error Function "EF" is not initially zero.
  If it is, you may tighten the specification.

Optim1[1] reached the iteration limit.

Resource usage:
    Total stopwatch time: 11.66 seconds.

-------------------------------------------------------------------------------
Simulation finished: dataset `adsms' written in:
  `E:\users\default\ads_prj/data ..

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离线g0dfather

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1楼发表于: 2010-11-03 19:22:23

2499也差太远了吧，结构原理有问题吧，要不就是你设错了

离线ypoc

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2楼发表于: 2010-11-03 22:54:14

优化方式你就选那个 Gradient，应该很快就能收敛了

OPTIM Optim1[1] <E:\ADS_PRO\MT\OPT_prj\networks\RF_MT>  optIter=(0->80)

SP Optim1[1].SP1[0] <E:\ADS_PRO\MT\OPT_prj\networks\RF_MT>  optIter=0  freq=(2.2 GHz->2.6 GHz)
.................................................................................
Iteration/Trial #0:
  CurrentEF: 2498.98126301429
  Optimization variables:
    TL1.L = 1e-03
    TL2.L = 1e-03
Iteration/Trial #1:
  CurrentEF: 2478.05290788602
  Optimization variables:
    TL1.L = 49.9933e-03
    TL2.L = 481.214e-06

。。。。。。。。

SP Optim1[1].SP1[54] <E:\ADS_PRO\MT\OPT_prj\networks\RF_MT>  optIter=54  freq=(2.2 GHz->2.6 GHz)
...............................................................
..................
Iteration/Trial #55:
  CurrentEF: 1.15108786323448
  Optimization variables:
    TL1.L = 47.7068e-03
    TL2.L = 26.403e-03

SP Optim1[1].SP1[55] <E:\ADS_PRO\MT\OPT_prj\networks\RF_MT>  optIter=55  freq=(2.2 GHz->2.6 GHz)
.................................................................................
Iteration/Trial #56:
  CurrentEF: 0.0364796239559944
  Optimization variables:
    TL1.L = 47.7045e-03
    TL2.L = 26.403e-03

SP Optim1[1].SP1[56] <E:\ADS_PRO\MT\OPT_prj\networks\RF_MT>  optIter=56  freq=(2.2 GHz->2.6 GHz)
.................................................................................
Iteration/Trial #57:
  CurrentEF: 0
  Optimization variables:
    TL1.L = 47.7045e-03
    TL2.L = 26.4058e-03

SP Optim1[1].SP1[57] <E:\ADS_PRO\MT\OPT_prj\networks\RF_MT>  optIter=57  freq=(2.2 GHz->2.6 GHz)
.................................................................................
Optim1[1] reached the goals.

Resource usage:
    Total stopwatch time: 24.33 seconds.

-------------------------------------------------------------------------------
Simulation finished: dataset `RF_MT' written in:
  `E:\ADS_PRO\MT\OPT_prj/data'
-------------------------------------------------------------------------------

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