Authors:
Henry H. Hahn,
Mark W. Spong,
Volume: 1, Page 895 Paper number 1514
Abstract:
This paper describes progress in the development of an integrated network
of internet based control laboratories at the University of Illinois
at Urbana-Champaign. A key feature of our project is the use of real
experiments in addition to simulation and animation. Our first set
of experiments includes a DC-motor, an inverted pendulum, an inertia
wheel pendulum, and a two-link, direct drive robot arm. These experiments
were first tested online in the summer of 2000 and we are class testing
them in the fall of 2000 and spring of 2001.
Authors:
Branko G. Dijkstra,
Niad J. Rambaratsingh,
Carsten W. Scherer,
Okko H. Bosgra,
Maarten Steinbuch,
Sander Kerssemakers,
Volume: 1, Page 901 Paper number 1268
Abstract:
In this paper a new technique is presented to design input signals
for point-to-point control problems with the property of minimal excitation
of parasitic system oscillations. This technique is compared to impulse
based input design techniques in experiments performed on an industrial
XY-positioning table. Impulse Input Shaping was formulated as a solution
to an optimisation problem, which has been transformed for the case
of point-to-point problems, resulting in a more time-optimal solution.
The results from this new optimisation are very impressive considering
the simplicity.
Authors:
Stefano Di Gennaro,
Volume: 1, Page 907 Paper number 2188
Abstract:
This work deals with the nonlinear H-infinity control of a permanent
magnet synchronous motor subject to parameter variations during its
operation. The control aim is to track a desired angular trajectory.
First, a controller based on the nominal parameter values is determined,
while the parameter variations are considered disturbances acting on
the nominal plant. Second, a nonlinear H-infinity controller is designed
in order to satisfy the sub-optimal attenuation problem in the case
of availability of the whole state vector. This second step entails
the approximated resolution of a (nonlinear) Hamilton-Jacobi-Isaacs
equation. The resulting controller is tested in numerical simulations
and its performance is compared with that of a linear H-infinity controller.
Authors:
Huixing Zhou,
Kok Kiong Tan,
Tong-Heng Lee,
Volume: 1, Page 913 Paper number 1018
Abstract:
In this paper, a learning nonlinear PID controller is developed for
vaguely modeled nonlinear systems under significant disturbance and
noise. The control scheme is generic in nature, but it is applied specifically
to micro positioning of linear piezoelectric motors in this paper.
Mathematical models for the piezoelectric motor and the associated
friction phenomenon are provided and verified in the simulation and
experimental results provided. These results also highlight the good
motion control performance achieved from the control scheme.
Authors:
Romeu Reginatto,
Alexandre S. Bazanella,
Volume: 1, Page 919 Paper number 1895
Abstract:
The influence of the rotor time constant mismatch on the stability
of induction motors under field oriented control is analyzed. A global
stability criterion based on the solution of an LMI/LME problem is
given.
Authors:
Hou-Tsan Lee,
Li-Chen Fu,
Hsin-Shen Huang,
Volume: 1, Page 925 Paper number 2192
Abstract:
This paper proposes a speed tracking control of induction motors based
on the input/output linearization method, which can also achieve the
maximal power transfer. A simple group of observers are designed to
estimate the rotor flux in order to determine the orientation of rotor
flux. The control law of the maximal power transfer to the rotor gives
the relationship between the stator voltage and the orientation of
rotor flux in d-q frame. The speed tracking controller is also robust
with respect to the variation of rotor resistance and load torque.
Simulation results are given to show the effectiveness of the presented
controller. Experimental results are also given to validate the performances.
Authors:
Faa-Jeng Lin,
Rong-Jong Wai,
Chin-Chung Lee,
Shu-Peng Hsu,
Volume: 1, Page 931 Paper number 111
Abstract:
A robust controller, which combines the merits of integral-proportional
(IP) position control and neural network (NN) control, is designed
for a linear induction motor (LIM) servo drive in this study. First,
the secondary flux of the LIM is estimated using a sliding-mode flux
observer on the stationary reference frame and the feedback linearization
theory is used to decouple the thrust force and the flux amplitude
of the LIM. Then, the IP position controller is designed according
to the estimated mover parameters to match the time-domain command
tracking specifications. Moreover, a robust controller is formulated
using the NN uncertainty observer, which is implemented to estimate
the lumped uncertainty of the controlled plant, as an inner-loop force
controller to increase the robustness of the LIM servo drive system.
Furthermore, in the derivation of the on-line training algorithm of
the NN, an error function is used in the Lyapunov function to avoid
the real-time identification of the sys
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