怎么用matlab做系统辨识,系统辨识大牛Ljung编写的MATLAB系统辨识使用手册
【实例简介】
系统辨识大牛Ljung编写的MATLAB系统辨识使用手册,这本书详细地介绍了在MATLAB已经所属simulink环境下,系统辨识工具箱的一些使用办法,是一本非常经典的教材!
Revision History
pril 1988
First printing
July 1991
Second printing
M
ay1995
Third printing
November 2000 Fourth printing
Revised for Version 5.0(Release 12)
pril 2001
Fifth printing
July 2002
Online only
Revised for Version 5.0.2 Release 13)
June 2004
Sixth printing
Revised for Version 6.0.1(Release 14)
March 2005
Online only
Revised for Version 6.1.1Release 14SP2)
September 2005 Seventh printing
Revised for Version 6.1.2(Release 14SP3)
March 2006
Online only
Revised for Version 6.1.3(Release 2006a)
September 2006 Online only
Revised for Version 6.2 Release 2006b)
March 2007
Online only
Revised for Version 7.0 ( Release 2007a)
September 2007 Online only
Revised for Version 7.1 (Release 2007b
March 2008
Online only
Revised for Version 7.2(Release 2008a)
October 2008
Online only
Revised for Version 7.2.1 Release 2008b)
March 2009
Online only
Revised for Version 7.3(Release 2009a)
September 2009 Online only
Revised for Version 7.3.1(Release 2009b)
March 2010
Online only
Revised for Version 7. 4 (Release 2010a)
eptember
2010 Online only
Revised for Version 7.4.1(Release 2010b)
pril 2011
Online onl
Revised for Version 7.4.2(Release 2011a)
September 2011 Online only
Revised for Version 7.4.3(Release 2011b)
March 2012
Online only
Revised for Version 8.0( Release 2012a
about the Developers
About the Developers
ystem Identification Toolbox software is developed in association with the
following leading researchers in the system identification field
Lennart Ljung. Professor Lennart Ljung is with the department of
Electrical Engineering at Linkoping University in Sweden. He is a recognized
leader in system identification and has published numerous papers and books
in this area
Qinghua Zhang. Dr. Qinghua Zhang is a researcher at Institut National
de recherche en Informatique et en Automatique(INria) and at Institut de
Recherche en Informatique et systemes Aleatoires (Irisa), both in rennes
France. He conducts research in the areas of nonlinear system identification
fault diagnosis, and signal processing with applications in the fields of energy
automotive, and biomedical systems
Peter Lindskog. Dr. Peter Lindskog is employed by nira dynami
AB, Sweden. He conducts research in the areas of system identification
signal processing, and automatic control with a focus on vehicle industry
applications
Anatoli Juditsky. Professor Anatoli Juditsky is with the laboratoire Jean
Kuntzmann at the Universite Joseph Fourier, Grenoble, france. He conducts
research in the areas of nonparametric statistics, system identification, and
stochastic optimization
About the developers
Contents
Choosing Your System Identification Approach
Linear model structures
1-2
What Are Model objects?
Model objects represent linear systems
About model data
1-5
Types of Model objects
Dynamic System Models
1-9
Numeric Models
1-11
umeric Linear Time Invariant (LTD Models
1-11
Identified LTI models
Identified Nonlinear models
1-12
Nonlinear model structures
1-13
Recommended Model Estimation Sequence
1-14
Supported Models for Time- and Frequency-Domain
Data
,,,,,,,1-16
Supported Models for Time-Domain Data
1-16
Supported Models for Frequency-Domain Data
1-17
See also
1-18
Supported Continuous-and Discrete-Time Models
1-19
Model estimation commands
1-21
Creating Model Structures at the command Line ... 1-22
about system Identification Toolbox Model Objects ... 1-22
When to Construct a Model Structure Independently of
Estimation
1-23
Commands for Constructing Model Structures
1-24
Model Properties
1-25
See als
1-27
Modeling Multiple-Output Systems ......... 1-28
About Modeling multiple-Output Systems
1-28
Modeling Multiple Outputs Directly
1-29
Modeling multiple outputs as a Combination of
Single-Output Models.......
1-29
Improving Multiple-Output Estimation Results by
Weighing Outputs During Estimation ....... 1-30
Identified linear Time-Invariant models
1-32
IDLTI Models
1-32
Configuration of the Structure of Measured and Noise o
Representation of the Measured and noise Components fo
Various model Types
1-33
Components ....
1-35
Imposing Constraints on the Values of Mode
Parameters
1-37
Estimation of Linear models
1-8
Data Import and Processing
2「
Supported Data ...
2-3
Ways to Obtain Identification Data
Ways to Prepare Data for System Identification ... 2-6
Requirements on Data Sampling
Representing Data in MATLAB Workspace
·····
Time-Domain Data Representation
2-9
Time-Series Data Representation
2-10
Contents
Frequency-Domain Data Representation ....... 2-11
Importing Data into the Gui
2-17
Types of Data You Can import into the GUi
2-17
Importing time-Domain Data into the GUI
2-18
Importing Frequency-Domain Data into the GUI
2-22
Importing Data Objects into the GUI ......... 2-30
Specifying the data sampling interval
2-34
Specifying estimation and validation Data
2-35
Prep
ing data Using Quick Start
Creating Data Sets from a Subset of Signal Channelo
2-36
2-37
Creating multiexperiment Data Sets in the gUi
2-39
Managing data in the gui ............. 2-46
Representing Time- and Frequency-Domain Data Using
iddata object
2-55
iddata constructor
2-55
iddata Properties.........
2-58
Creating Multiexperiment Data at the Command Line .. 2-61
Select Data Channels, I/O Data and Experiments in iddata
Objects
2-63
Increasing Number of Channels or Data Points of iddata
Objects
2-67
Managing iddata Objects
2-69
Representing Frequency-Response Data Using idfrd
Obiec
2-76
idfrd Constructor
2-76
idfrd Properties
2-77
Select I/o Channels and Data in idfrd Objects ..... 2-79
Adding Input or Output Channels in idfrd Objects
2-80
Managing idfrd Objects
2-83
Operations That Create idfrd Objects
2-83
Analyzing Data quality
2-85
Is your data ready for modeling?
2-85
Plotting Data in the guI Versus at the command line
2-86
How to plot data in the gui
2-86
How to plot data at the command line
2-92
How to Analyze Data Using the advice Command
2-94
Selecting Subsets of Data
2-96
IX
Why Select Subsets of Data?
2-96
Extract Subsets of Data Using the GUI
2-97
Extract Subsets of data at the Command Line
2-99
Handling Missing Data and outliers
2-100
Handling missing data
2-100
Handling outliers
2-101
Extract and Model Specific Data Segments
2-102
See also
2-103
Handling offsets and Trends in Data
2-104
When to detrend data
2-104
Alternatives for Detrending Data in GUi or at the
Command-Line
2-105
Next Steps After detrending
2-107
How to Detrend Data Using the Gui
2-108
How to detrend data at the Command line
2-109
Detrending Steady-State Dat
109
cending transient Dat
2-109
See also
2-110
Resampling Data
2-111
What Is resampling?...,,.,,,,,,,,,,,.2-111
Resampling data without Aliasing Effects
2-112
See also
2-116
Resampling data Using the GUi
.,,,,2-117
Resampling Data at the Command line
2-118
Filtering Data
2-120
Supported Filters
2-120
Choosing to Prefilter Your Data
2-120
See also
2-121
How to Filter Data Using the gui
2-122
Filtering Time-Domain Data in the GuI........ 2-122
Content
【实例截图】
【核心代码】
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