2018 (vol. 28) - Number 1

*I. Duleba, I. Karcz-Duleba:*

A comparison of methods solving repeatable inverse kinematics for robot manipulators

*A. Niederliński:*

A new approach for modelling uncertainty in expert systems knowledge bases

*T.T. Tuan, L.D. Tufa, M.I.A. Mutalib, N.M. Ramli :*

Optimal operation of a process by integrating dynamic economic optimization and model predictive control formulated with empirical model

*M. Kaleta:*

Network winner determination problem

*A. Kowalewski:*

Extremal problems for parabolic systems with time-varying lags

*T. Rybus, K. Seweryn, J.Z. S±siadek:*

Application of predictive control for manipulator mounted on a satellite

*T. Kaczorek:*

Reachability and observability of positive discrete-time linear systems with integer positive and negative powers of the state Frobenius matrices

*G. Grassi, A. Ouannas, V-T. Pham:*

A general unified approach to chaos synchronization in~continuous-time systems (with or without equilibrium points) as well as in discrete-time systems

*D. Pazderski:*

A robust smooth controller for a unicycle-like robot

ACS Abstract:

**2009 (Volume 19)**

Number 1

**Axial dispersion models and their basic properties**

D. Bartova, B. Jakes, J. Kukal(Institute of Chemical Technology, Prague, Czech Republic) |

Mathematical description of models including initial and boundary conditions, transfer function, model transient response to Dirac impulse as weighting (impulse) function, model transient response to step function as step response are included in this study. There are also included further characteristics of impulse function: raw moments up to 4th order, variance, variation coefficient, skewness , kurtosis, location and value of mode. Complete set of these characteristics for all studied models is collected (model-by-model) in seven tables.

The authors declare several properties of weighting function as key ones: value of 1st raw (dimensional) moment, parametric values and mode properties, related to dependence on Peclet number. The plots of parametric values and mode properties vs. Peclet number are mentioned in the paper for four studied axial dispersion models.

**keywords:** axial dispersion, flow models, basic properties, moments, mode

**Zeros and the output-zeroing problem in linear systems with time delay in control vector**

J. Tokarzewski(Warsaw University of Technology, Poland) |

**keywords:** linear systems with time delay in control vector, state-space methods, output-zeroing problem, invariant zeros

**Novel digital PWM strategies of multilevel voltage source inverters**

D. Beriber, A. Talha(University of Sciences and Technology Houari Boumediene, Algeria) | E. Berkouk, M. Boucherit(Ecole Nationale Polytechnique d'Alger, Algeria) | B. Francois(Ecole Centrale de Lille, France) |

**keywords:** multilevel NPC inverter, generating function, connection function, PWM strategies, algebraic modulation

**Differential evolution applied to parameter estimation of induction motor**

B. Subudhi, D. Jena(Department of Electrical Engineering, NIT, India) |

**keywords:** differential evolution, induction motor, parameter estimation

**Neural network parallel force/position control of robot manipulators under environment and robot dynamics uncertainties**

F. Ferguene, N, Achour, R. Toumi(LRPE, Faculty of Electronics and Computer Science, Algeria) |

**keywords:** force/position control, parallel control, PID control, neural network controllers, adaptive control, robot manipulators

**Experimental investigations of human-operator as a pressure force regulator in man-hand tool system**

Z. Basista, M. Ksiazkiewicz, J. Tarnowski(Cracow University of Technology, Poland) |

**keywords:** man-machine system, manual control, human-operator, hand-tool

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