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비선형 ARX 모델

시그모이드, 웨이블릿과 같은 동적 네트워크를 사용하여 모델링한 비선형 동작

비선형 ARX 모델을 사용하여 웨이블릿 네트워크, 트리 분할, 시그모이드 네트워크와 같은 동적 비선형성 추정기를 이용해 시스템의 비선형성을 나타냅니다. 이들 모델은 툴박스에서 idnlarx 객체로 표현됩니다. System Identification 앱 또는 명령줄에서 nlarx 명령을 사용하여 비선형 ARX 모델을 추정할 수 있습니다.

System Identification측정된 데이터에서 동적 시스템의 모델 식별하기

함수

모두 확장

idnlarxNonlinear ARX model
nlarxEstimate parameters of nonlinear ARX model
nlarxOptionsOption set for nlarx
isnlarxDetect nonlinearity in estimation data
initSet or randomize initial parameter values
getpvecObtain model parameters and associated uncertainty data
setpvecModify values of model parameters
linearRegressorSpecify linear regressor for nonlinear ARX model
polynomialRegressorSpecify polynomial regressor for nonlinear ARX model
customRegressorSpecify custom regressor for nonlinear ARX model
getregRegressor expressions and numerical values in nonlinear ARX model
polyreg(Not recommended) Powers and products of standard regressors
customreg(Not recommended) Custom regressor for nonlinear ARX models
addreg(Not recommended) Add custom regressors to nonlinear ARX model
customnetCustom network function for nonlinear ARX and Hammerstein-Wiener models
linearLinear mapping object for nonlinear ARX models
neuralnetMultilayer feedforward neural network mapping function for nonlinear ARX models (requires Deep Learning Toolbox)
treepartitionTree-partitioned nonlinear function for nonlinear ARX models
wavenetWavelet network function for nonlinear ARX and Hammerstein-Wiener models
sigmoidnetSigmoid network function for nonlinear ARX and Hammerstein-Wiener models
evaluateValue of nonlinearity estimator at given input
simSimulate response of identified model
simOptionsOption set for sim
predictPredict K-step-ahead model output
predictOptionsOption set for predict
compareCompare identified model output and measured output
compareOptionsOption set for compare
forecastForecast identified model output
forecastOptionsOption set for forecast
plotPlot nonlinearity of nonlinear ARX model
evaluateValue of nonlinearity estimator at given input
getDelayInfoGet input/output delay information for idnlarx model structure
findopCompute operating point for Nonlinear ARX model
findopOptionsOption set for findop
operspecConstruct operating point specification object for idnlarx model
linearizeLinearize nonlinear ARX model
linappLinear approximation of nonlinear ARX and Hammerstein-Wiener models for given input

블록

모두 확장

Nonlinear ARX ModelSimulate nonlinear ARX model in Simulink software
Iddata Sink시뮬레이션 데이터를 iddata 객체로 MATLAB 작업 영역으로 내보내기
Iddata SourceImport time-domain data stored in iddata object in MATLAB workspace

도움말 항목

What are Nonlinear ARX Models?

Understand the structure of a nonlinear ARX model.

Available Mapping Functions for Nonlinear ARX Models

Choose from sigmoid, wavelet, tree partition, linear, neural, and custom network nonlinearities.

Identifying Nonlinear ARX Models

Specify the Nonlinear ARX structure, and configure the estimation algorithm.

Validate Nonlinear ARX Models

Plot model nonlinearities, analyze residuals, and simulate and predict model output.

Using Nonlinear ARX Models

Simulate, predict, and forecast model output, linearize nonlinear ARX models, and import estimated models into the Simulink® software.

Linear Approximation of Nonlinear Black-Box Models

Choose the approach for computing linear approximations, compute operating points for linearization, and linearize your model.

How the Software Computes Nonlinear ARX Model Output

How the software evaluates the output of nonlinearity estimators and uses this output to compute the model response.

추천 예제