National Instruments ni matrixx xmath 用户手册

•

Chapter 5, 

, describes three utility functions: 

hankelsv( )

, 

stable( )

, and 

compare( )

. 

•

Chapter 6, 

, illustrates a number of the MRM functions and 

their underlying ideas. 

Throughout this document, bibliographic references are cited with 
bracketed entries. For example, a reference to [VODM1] corresponds 
to a paper published by Van Overschee and De Moor. For a table of 
bibliographic references, refer to Appendix A, 

.

This manual uses the following general nomenclature:

•

Matrix variables are generally denoted with capital letters; vectors are 
represented in lowercase.

•

G(s) is used to denote a transfer function of a system where s is the 
Laplace variable. G(q) is used when both continuous and discrete 
systems are allowed.

•

H(s) is used to denote the frequency response, over some range of 
frequencies of a system where s is the Laplace variable. H(q) is used 
to indicate that the system can be continuous or discrete.

•

A single apostrophe following a matrix variable, for example, x’, 
denotes the transpose of that variable. An asterisk following a matrix 
variable, for example, A*, indicates the complex conjugate, or 
Hermitian, transpose of that variable.

This publication makes use of the following types of conventions: font, 
format, symbol, mouse, and note. These conventions are detailed in 
Chapter 2, MATRIXx Publications, Online Help, and Customer Support, 
of the MATRIXx Getting Started Guide.