FIR Fit參數子選項字段和按鈕
Redo Fit(重新擬合):重新進行FIR設定和擬合。
Initialize Parametric(初始化參數):使用這些參數近似作為parametric fit(參數擬合)的初始輸入。結果和約束都被復制到Parametric Fit(參數擬合)選項卡窗口。
Row Headings(行標題):輸入和中間變量。
Column Headings(列標題):輸出。
Ramp(斜坡):將輸出配置為斜坡。
每個單元格的內容
Model Type(模型類型):該列表框顯示了FIR Fit Plots子選項卡上當前選中的模型類型。
Model Parameters and Constraints(模型參數和約束):顯示的參數量取決于所設置的模型類型。在每個單元格中也顯示了參數值和高低限。與該輸入—輸出組相對應的擬合統計在每個單元格表的底行顯示。
此窗口提供的一些其他選項:
Parameter Constraints(參數約束):通過適當地更改上下限值,對參數設置約束。 FIR和PAR模型將實時更新為F2P模型上實施的這些新限制。
參數擬合
對此窗口中的數據執行參數擬合(請參見第35頁的“直接參數化模型辨識”)。需要注意的是,通過前一個選項卡上的FIR擬合對數據的參數擬合給出良好的初始估計是非常重要的。
Parametric Fit(參數擬合)窗口布局類似于Pre-Fit(預擬合)下的Parameters(參數)子選項卡。此選項卡有兩種顯示模式:
?Setup Mode(設置模式):單元格可更改,不會變灰。在此模式下,你可以執行參數擬合。Low和High值對應于適用于擬合的低限和高限。此模式中的參數值可用作初始猜測。
?Results Mode(結果模式):所有單元格都顯示擬合的不能更改的結果。此模式顯示了從AIDAPro引擎獲得的結果。 95%Low和95%High值對應于參數計算的95%置信帶。
Parametric Fit窗口字段
Fit/New Fit(擬合/新擬合):?若窗口處于設置模式,請執行擬合(單元格不顯示灰色)。
?通過將當前模式從結果模式更改為設置模式,執行新的擬合。
Row Headings(行標題):輸入和中間變量。
Column Headings(列標題):輸出。
Ramp(斜坡):確認輸出為斜坡。
每個單元格的內容:所有單元格都有兩種顯示模式—設置和結果模式。
原文:
FIR Fit Parameters Subtab Fields and Buttons
Redo Fit: Redo the FIR setup and fitting.
Initialize Parametric: Use these parametric approximations as initial inputs for the parametric fit. The results and constraints are copied to the Parametric Fit tab window.
Row Headings: Inputs and intermediates.
Column Headings: Outputs.
**Ramp: **Confirms the output is a ramp.
Contents of each cell
**Model Type: **The list box displays the current type of model selected on the FIR Fit Plots subtab.
**Model Parameters and Constraints: **The number of parameters displayed depends on the set model type. Parameter values and the high and low limits are shown in each cell. The Fit Stat corresponding to that input-output pair is shown in the bottom row of each cell table.
Some of the other options available in this window:
Parameter Constraints: Place constraints on parameters by changing the appropriate low and high limit values. The FIR to PAR model will immediately be updated with these new limits enforced on the F2P model.
Parametric Fit
You perform parametric fit on the data in this window (refer to “Direct Parametric Model Identification” on page 35). It is important that a good initial estimate be given to a parametric fit of data by making a FIR Fit on the previous tab.
The Parametric Fit window layout is similar to the Parameters subtab under Pre-Fit. There are two modes of display for this tab:
**?Setup Mode: **The cells are available for changes and are not grayed out. In this mode you can perform a parametric fit. The Low and High values correspond to low and high limits applicable to the fit. The parameter value in this mode can serve as the initial guess.
**?Results Mode: **All cells display the results of the fit but none can be changed.This mode displays after results are obtained from the AIDAPro engine. The 95% Low and 95% High values correspond to the computed 95 percent confidence bands on the parameters.
Parametric Fit Window Fields
**Fit/New Fit: **? Perform a fit if the window is in setup mode(cells are not grayed out).
? Perform a new fit by changing the current mode from results mode to setup mode.
**Row Headings: **Inputs and Intermediates.
Column Headings: Outputs.
Ramp: Confirms the output is a ramp.
**Contents of each cell: **All the cells have two display modes – Setup and Results modes.
2016.11.20