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Non-linear sliding surface: towards high performance robust control

DSpace at IIT Bombay

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Field Value
 
Title Non-linear sliding surface: towards high performance robust control
 
Creator FULWANI, D
BANDYOPADHYAY, B
FRIDMAN, L
 
Subject VARIABLE-STRUCTURE SYSTEMS
TRACKING CONTROL
LINEAR-SYSTEMS
UNCERTAIN SYSTEMS
INPUT SATURATION
MODE CONTROL
FEEDBACK
DESIGN
 
Description The study proposes a method to design a non-linear sliding surface to achieve better transient response for a class of single-input and single-output (SISO) non-linear uncertain system represented in a Brunowsky canonical form. The proposed surface can also be used for linear uncertain systems with matched perturbations. The proposed surface increases the damping ratio of the closed-loop system from its initial low value; as the output approaches the setpoint from its initial value. Initially, the system is lightly damped resulting in a quick response and as the output approaches the setpoint, the system is overdamped to avoid overshoot. The existence of sliding mode is proved and a new control law is proposed to enforce sliding motion. The scheme is able to achieve low overshoot and short settling time simultaneously which is not possible with a linear sliding surface. To ease the synthesis of the non-linear surface, linear matrix inequalities-based algorithm is proposed. Effectiveness of the proposed scheme is illustrated by the simulation results.
 
Publisher INST ENGINEERING TECHNOLOGY-IET
 
Date 2014-10-16T14:00:16Z
2014-10-16T14:00:16Z
2012
 
Type Article
 
Identifier IET CONTROL THEORY AND APPLICATIONS, 6(2)235-242
http://dx.doi.org/10.1049/iet-cta.2010.0727
http://dspace.library.iitb.ac.in/jspui/handle/100/15729
 
Language en