Rok 2021

• Novel hierarchical nonlinear control algorithm to improve dissolved oxygen control in biological WWTP

  Publikacja

  • R. Piotrowski
  • H. K. Sawicki (dawniej: H. Sawicki)
  • K. Żuk

  - JOURNAL OF PROCESS CONTROL - Rok 2021

  Wastewater treatment is a problem known to humankind for centuries. The quality of treated sewage determines the condition of reservoirs around the world. Control of such a complex and nonlinear system as a wastewater treatment plant requires thorough knowledge of the process. The paper presents a hierarchical control system of a Sequencing Batch Reactor (SBR) in Wastewater Treatment Plant (WWTP) taking into account a model based...

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Rok 2020

• Design of optimal state feedback controller with observer for multidimensional electrical system

  Publikacja

  • R. Piotrowski
  • M. Szafrański
  • K. Żuk

  - Przegląd Elektrotechniczny - Rok 2020

  From the control point of view, two-input-two-output RC electrical system is a linear and multidimensional system. In this paper, integral control and closed-loop observer are verified whether they can be used and designed. To verify this, Kalman tests are made. These structures are presented and discussed. Integral Control is tested with some base disturbances impact and checked whether it can handle them. The estimated values...

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