Unconstrained optimization criteria for blind equalization of multichannel linear systems of nonminimum phase

2002 ◽  
Author(s):  
Y. Inouye ◽  
T. Sato
Keyword(s):  
Linear Systems ◽  
Unconstrained Optimization ◽  
Blind Equalization ◽  
Nonminimum Phase ◽  
Optimization Criteria

scholarly journals STABLE DYNAMIC INVERSION OF NONMINIMUM-PHASE SCALAR LINEAR SYSTEMS

2005 ◽  
Vol 38 (1) ◽  
pp. 107-112 ◽  
Author(s):  
Daniele Pallastrelli ◽  
Aurelio Piazzi
Keyword(s):  
Linear Systems ◽  
Dynamic Inversion ◽  
Nonminimum Phase

Preview-Based Stable-Inversion for Output Tracking of Linear Systems

1999 ◽  
Vol 121 (4) ◽  
pp. 625-630 ◽  
Author(s):  
Qingze Zou ◽  
Santosh Devasia
Keyword(s):  
Linear Systems ◽  
Tracking Error ◽  
High Accuracy ◽  
Nonminimum Phase ◽  
Output Tracking ◽  
Stable Inversion ◽  
Nonminimum Phase Systems ◽  
Phase Systems ◽  
Inversion Techniques ◽  
Planning Problems

Stable Inversion techniques can be used to achieve high-accuracy output tracking. However, for nonminimum phase systems, the inverse is noncausal—hence the inverse has to be precomputed using a prespecified desired-output trajectory. This requirement for prespecification of the desired output restricts the use of inversion-based approaches to trajectory planning problems (for nonminimum phase systems). In the present article, it is shown that preview information of the desired output can be used to achieve online inversion-based output-tracking of linear systems. The amount of preview-time needed is quantified in terms of the tracking error and the internal dynamics of the system (zeros of the system). The methodology is applied to the online output tracking of a flexible structure and experimental results are presented.

Sign in / Sign up

Export Citation Format

Share Document