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2021 (vol. 31) - Number 3

Vanya R. Barseghyan:

The problem of control of rod heating process with nonseparated conditions at intermediate moments of time

Khadidja Bentata , Ahmed Mohammedi, Tarak Benslimane:

Development of rapid and reliable cuckoo search algorithm for global maximum power point tracking of solar PV systems in partial shading condition

Jakub Musial, Krzysztof Stebel and Jacek Czeczot:

Self-improving Q-learning based controller for a class of dynamical processes

Ramesh Devarapalli and Vikash Kumar:

Power system oscillation damping controller design: a novel approach of integrated HHO-PSO algorithm

T. Kaczorek:

Poles and zeros assignment by state feedbacks in positive linear systems

Saule Sh. Kazhikenova and Sagyndyk N. Shaltakov, Bekbolat R. Nussupbekov:

Difference melt model

R. Almeida and N. Martins, E. Girejko and A.B. Malinowska, L. Machado:

Evacuation by leader-follower model with bounded confidence and predictive mechanisms

B. Zhao and R. Zhang, Y. Xing:

Evaluation of medical service quality based on a novel multi-criteria decision-making method with unknown weighted information

Stefan Mititelu, Savin Treanta:

Efficiency in vector ratio variational control problems involving geodesic quasiinvex multiple integral functionals

D.K. Dash and P.K. Sadhu, B. Subudhi:

Spider monkey optimization (SMO) – lattice Levenberg–Marquardt recursive least squares based grid synchronization control scheme for a three-phase PV system

Suresh Rasappan and K.A. Niranjan Kumar:

Dynamics, control, stability, diffusion and synchronization of modified chaotic colpitts oscillator

ACS Abstract:

2005 (Volume 15)
Number 1
1. A set of PID tuning rules
2. IMM based UKF and IMM based EKF algorithms for tracking highly maneuverable target
3. Parameterization of LMS-based control algorithms for local zones of quiet
4. On robust state feedback control of a permanent magnet synchronous machine drive: an experimental evaluation
5. A pole placement controller for active vehicle suspension
6. On the adaptive impulsive noise removal in color images

A set of PID tuning rulesDownload full PDF article
Leszek Trybus
(Department of Electrical Engineering and Informatics, Rzeszów University of Technology, Poland)

A set of PID tuning rules for four plant models used currently in self-tuning controllers is developed. The four models are: 1st and 2nd order plants with delays, multiple time constant, Strejc model. Critically damped responses are assumed, i.e. no overshoot and short settling time. Oscillatory responses can also be obtained for low-order models. Classical techniques of polezero cancellation, Pad? approximation and root locus are employed. The rules are "handbooklike", what means that they explicitly express PID settings in terms of plant parameters, making self-tuning applications possible. Settling time estimates are also given.

keywords: PID controller, tuning rules, root locus.


IMM based UKF and IMM based EKF algorithms for tracking highly maneuverable targetDownload full PDF article
Mohand Said Djouadi and Abdennour Sebbagh
(Laboratoire Robotique and Productique, Ecole Militaire Polytechnique, Algérie)
Daoud Berkani
(Electrical and Computer Engineering, Ecole Nationale Polytechnique, Algérie)

This paper aims to contribute in solving the problem of model-based body motion estimation by using data coming from visual sensors. We consider the case of state estimation in jump Markov nonlinear systems. The Interacting Multiple Model (IMM) algorithm is specially designed to track accurately targets whose state and/or measurement (assumed to be linear) models changes during motion transition. However, when these models are nonlinear, the IMM algorithm must be modified in order to guarantee an accurate track. In this paper we propose to compare the results given by an IMM algorithm Extended Kalman filter based (IMM-EKF) versus those given by an IMM algorithm Unscented Kalman filter based (IMM-UKF) in tracking target assumed to be highly maneuverable.

keywords: estimation, Kalman filtering, target tracking, visual servoing.


Parameterization of LMS-based control algorithms for local zones of quietDownload full PDF article
Małgorzata I. Michalczyk
(Institute of Automatic Control, Silesian University of Technology, Poland)

The paper summarizes the research on parameterization of LMS-based adaptive control algorithms for active noise control (ANC) systems. These single- and multi-channel systems were built in enclosures to create three-dimensional zones of quiet (3D ZoQs) by controlling electro-acoustic plants characterized by complicated dynamics and strong nonstationarities. On the basis of results of simulation as well as real-world experiments it was shown how the electroacoustic plant modeling errors, adaptation parameter and controller filter order choice influence the ANC system performance, also in nonstationary conditions. These observations were used to formulate some parameterization rules and hints for systems controlling electro-acoustic plants. It was shown that properly parameterized ANC systems create large adaptive, spatially moving 3D ZoQs.

keywords: Active Noise Control Systems, adaptation, FX-LMS algorithm.


On robust state feedback control of a permanent magnet synchronous machine drive: an experimental evaluationDownload full PDF article
K. Benmansour, M. Boucherit and M. Tadjine
(Laboratoire de Commande des Processus, Département de génie électrique, Ecole Nationale Polytechnique, Algérie)
H. Rezine
(Laboratoire de Controle et Commande, U.E.R d'automatique, Algérie)

This paper presents a theory and an experimental evaluation of robust control algorithm for permanent magnet synchronous machine (PMSM) speed drive fed by voltage source inverter. A simple control model is first obtained by performing field orientation through a nominal linearizing state feedback. Then, the robust control algorithm based on pole placement is applied to the PMSM in order to deal with plant uncertainties. The adopted method uses the notion of geometric stability and the multi-model approach in order to synthesis the state regulation by robust pole placement. To show the validity of our control approach, DSP based experimental results are presented. These results are very satisfactory and prove the feasibility of our control algorithm.

keywords: Permanent magnet synchronous machine, robust control, PWM inverter, field oriented vector control, state regulation, robust control, dSPACE kit, pole placement.


A pole placement controller for active vehicle suspensionDownload full PDF article
Jarosław Konieczny and Janusz Kowal
(Department of Process Control, AGH - University of Science and Technology, Poland)

The paper explores the potential applications of a controller designed in accordance with the pole placement rule. A 2DOF model representing a quarter-vehicle suspension is considered. However, this is only a theoretical model, and the dynamic properties of a active element are neglected. The study investigates how the variations of the gains matrix K elements should affect the dynamic behavior of an active vibration control system.

keywords: Pole placement, vehicle suspension, active variations control.


On the adaptive impulsive noise removal in color imagesDownload full PDF article
Bogdan Smolka and Konrad Wojciechowski
(Silesian University of Technology, Faculty of Automatic Control, Electronics and Computer Science, Poland)

In this paper a novel class of filters designed for the removal of impulsive noise in color images is presented. The proposed filter family is based on the kernel function which controls the noise suppression properties of the proposed filtering scheme. The comparison of the new filtering method with the standard techniques used for impulsive noise removal indicates its superior noise reduction capabilities and excellent structure preserving properties.

keywords: color image processing, noise reduction, image quality enhancement.


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