2020 (vol. 30) - Number 3

*M.A. Hammami, N.H. Rettab:*

On the region of attraction of dynamical systems: Application to Lorenz equations

*J. Rudy, J. Pempera, C. Smutnicki:*

Improving the TSAB algorithm through parallel computing

*Chiranjibe Jana, Madhumangal Pal , Guiwu Wei:*

Multiple Attribute Decision Making method based on intuitionistic Dombi operators and its application in~mutual fund evaluation

*S. Ogonowski, D. Bismor, Z. Ogonowski:*

Control of complex dynamic nonlinear loading process for electromagnetic mill

*N.A. Baleghi, M.H. Shafiei:*

An observer-based controller design for nonlinear discrete-time switched systems with~time-delay and affine parametric uncertainty

*Amine El Bhih, Youssef Benfatah, Mostafa Rachik:*

Exact determinantions of maximal output admissible set for a class of~semilinear discrete systems

*Archana Tiwari, Debanjana Bhattacharyya, K.C. Pati:*

Controllabilty and stability analysis on a group associated with Black-Scholes equation

*A. Sambas, I.M. Moroz, S. Vaidyanathan:*

A new 4-D hyperchaotic system with no equilibrium, its multistability, offset boosting and circuit simulation

*A.S.S. Abadi, P.A. Hosseinabadi, S. Mekhilef, A. Ordys:*

A new strongly predefined time sliding mode controller for a class of cascade high-order nonlinear systems

ACS Abstract:

**2003 (Volume 13)**

Number 4

**Robot controller with a self-measurement capability enabling the identification of friction**

Adam Wozniak, Wojciech Szynkiewicz and Cezary Zielinski(Warsaw University of Technology, Poland) |

**keywords:** robot controller, servomechanism, friction model, identification.

**The interval parabolic system**

Krzysztof Oprzedkiewicz(University of Mining and Metallurgy, Poland) |

**keywords:** interval systems, parabolic systems,the exponential stability.

**On controllability and minimum energy control of linear positive systems with delays**

Beata Sikora(Silesian University of Technology, Poland) |

**keywords:** positive dynamical systems, delay systems, relative controllability, admissible control, minimum energy control.

**Active control of circular plate vibration by using piezoceramic actuators**

Lucyna Leniowska and Ryszard Leniowski(University of Rzesz?w, Poland) |

**keywords:** active vibration control, feedback control, piezoceramic transducers, identification methods.

**Multivariable robust control applied to steering of three ship's velocities**

Witold Gierusz(Gdynia Maritime University, Poland) |

**keywords:** training ship, simulation model, multivariable system, robust control, real-time steering.

**Hierarchical control in a large scale stochastic system with nonclassical information structure**

Zdzislaw Duda and Witold Brandys(Silesian University of Technology, Poland) |

**keywords:** large scale system, stochastic system, decentralized control, optimal control.

**Errors of elementary floating-point operations in control algorithms**

Zbigniew Swider(Technical University of Rzeszow, Poland) |

*b*denotes the number of mantissa bits. Error of Euler rectangular integrator , commonly used in digital controllers, is evaluated as well. For small sampling step the error depends primarily on precision of the addition executed by the integrator. Increase of the precision used in some small controllers is also considered. The results are verified for first-order transfer function subject to white noise, sinusoidal and constant-plus-noise inputs.

**keywords:** floating-point arithmetic, roundoff errors, delta-operator, stochastic systems.

<< Back