Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/4759
Title: Nonlinear adaptive speed and field weakening controllers for DC motors
Authors: Liu, Zuo Zong.
Keywords: DRNTU::Engineering::Electrical and electronic engineering::Control and instrumentation::Control engineering
Issue Date: 2000
Abstract: In this thesis, we address field weakening control of a SEDCM system for high performance speed tracking. Two control strategies, based on in-depth understanding of the physical system and drive characteristics, are proposed. They implement both the exact model knowledge controllers plus on-line parameter estimation, and the nonlinear adaptive MIMO controller. The exact model knowledge field weakening controllers are developed using differential geometric approach, model reference adaptive identification, and observer techniques. These controllers include 1) nonlinear MIMO controller, 2) improved nonlinear MIMO controller, 3) nonlinear load-adaptive MIMO controller, and 4) nonlinear sensorless MIMO controller. They are specially designed to fast reject load torque disturbance, which is a practically challenging problem for the closed-loop controller design of motor drives. The nonlinear adaptive MIMO field weakening controller is presented by backstepping technique combined with variable structure control design to compensate for the parametric uncertainties of the armature, field resistance, and load disturbance. Computer simulations of all these controllers and parameter estimation are presented for a specific motor to demonstrate their effectiveness.
URI: http://hdl.handle.net/10356/4759
Schools: School of Electrical and Electronic Engineering 
Rights: Nanyang Technological University
Fulltext Permission: restricted
Fulltext Availability: With Fulltext
Appears in Collections:EEE Theses

Files in This Item:
File Description SizeFormat 
EEE-THESES_761.pdf
  Restricted Access
14.93 MBAdobe PDFView/Open

Page view(s) 50

481
Updated on May 24, 2024

Download(s)

10
Updated on May 24, 2024

Google ScholarTM

Check

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.