주파수 응답 모델

스펙트럼 분석을 사용하여 획득한 주파수 응답 모델

앱

측정된 데이터에서 동적 시스템의 모델 식별하기

Estimate spectral model using time-domain data in the Live Editor (R2021b 이후)

`etfe`	Estimate empirical transfer functions and periodograms
`spa`	Estimate frequency response with fixed frequency resolution using spectral analysis
`spafdr`	Estimate frequency response and spectrum using spectral analysis with frequency-dependent resolution
`idfrd`	Frequency response data or model

`getpvec`	Obtain model parameters and associated uncertainty data
`setpvec`	Modify values of model parameters
`bode`	주파수 응답, 또는 크기 및 위상 데이터의 보드 플롯
`bodemag`	주파수 응답의 크기 전용 보드 플롯
`freqresp`	Evaluate system response over a grid of frequencies
`chgFreqUnit`	Change frequency units of frequency-response data model

Estimate Frequency-Response Models in the App
You must have already imported your data into the app and performed any necessary preprocessing operations.
명령줄에서 주파수 응답 모델 추정하기
etfe, spa 및 spafdr 명령을 사용하여 스펙트럼 모델을 추정할 수 있습니다.

What is a Frequency-Response Model?
A frequency-response model is the frequency response of a linear system evaluated over a range of frequency values.
Data Supported by Frequency-Response Models
Characteristics of data supported for estimation of spectral analysis models.
Selecting the Method for Computing Spectral Models
How to select the method for computing spectral models during estimation in the app and at the command line.
Controlling Frequency Resolution of Spectral Models
Controlling frequency resolution of spectral models during estimation in the app and at the command line.
Spectrum Normalization
The spectrum of a signal is the square of the Fourier transform of the signal.