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  1. A Numerical Comparison of Infinite-Spectrum-Shaping Techniques When Controlling Stable and Unstable Dead-Time Systems via the Standard PID Controller

    Article • July 2025, Springer Science + Business Media

    Assoc. Prof. Libor Pekař

  2. Advances in Study of Time-Delay Systems and Their Applications: A Second Edition

    Article • Mathematics, June 2025, MDPI AG

    Assoc. Prof. Libor Pekař

  3. Manipulating trapped air bubbles in ice for message storage in cold regions

    Article • Cell Reports Physical Science, June 2025, Elsevier

    Assoc. Prof. Libor Pekař

  4. Metaheuristic-Based Model Optimization of a Steam-Filled Chamber

    Article • IEEE Access, January 2025, Institute of Electrical & Electronics Engineers (IEEE)

    Assoc. Prof. Libor Pekař, Maciej Smołka

  5. Open and Closed Source Models for LLM-Generated Metaheuristics Solving Engineering Optimization Problem

    Article • January 2025, Springer Science + Business Media

    Assoc. Prof. Libor Pekař, Maciej Smołka

  6. Effects of Environmental Temperature and Trapped Air Bubbles on the Mechanical Properties of Ice Cubes

    Article • ACS Applied Materials & Interfaces, November 2024, American Chemical Society (ACS)

    Assoc. Prof. Libor Pekař

  7. An experimental study on the effect of CO2 laser powers on melting characteristics of clear ice − part I: Horizontal irradiation

    Article • Applied Thermal Engineering, July 2024, Elsevier

    Assoc. Prof. Libor Pekař

  8. Experimental study on the effect of inverted aperture plate temperature on frosting characteristics under rising flow considering edge effect

    Article • International Journal of Heat and Mass Transfer, June 2024, Elsevier

    Assoc. Prof. Libor Pekař

  9. A numerical study of multiphase flow boiling heat transfer of nanofluids in the horizontal metal foam tubes

    Article • International Journal of Thermofluids, May 2024, Elsevier

    Assoc. Prof. Libor Pekař

  10. Experimental study on the distribution and growth characteristics of trapped air bubbles in ice slices at different freezing temperatures

    Article • Applied Thermal Engineering, May 2024, Elsevier

    Assoc. Prof. Libor Pekař

  11. Enhancing a Hierarchical Evolutionary Strategy Using the Nearest-Better Clustering

    Article • January 2024, Springer Science + Business Media

    Maciej Smołka, Assoc. Prof. Libor Pekař

  12. On the Relation Between the Smith Predictor and Algebraic Control Approach for Time Delay Systems: A Case Study

    Article • January 2024, Springer Science + Business Media

    Assoc. Prof. Libor Pekař

  13. Efficient Time-Delay System Optimization with Auto-Configured Metaheuristics

    Article • October 2023, Institute of Electrical & Electronics Engineers (IEEE)

    Maciej Smołka, Assoc. Prof. Libor Pekař

  14. Further experimental results on modelling and algebraic control of a delayed looped heating-cooling process under uncertainties

    Article • Heliyon, August 2023, Elsevier

    Assoc. Prof. Libor Pekař

  15. Regions of robust relative stability for PI controllers and LTI plants with unstructured multiplicative uncertainty: A second-order-based example

    Article • Heliyon, August 2023, Elsevier

    Assoc. Prof. Libor Pekař

  16. Maximizing Efficiency: A Comparative Study of SOMA Algorithm Variants and Constraint Handling Methods for Time Delay System Optimization

    Article • July 2023, ACM (Association for Computing Machinery)

    Maciej Smołka, Hubert Guzowski, Assoc. Prof. Libor Pekař

  17. Operating Point Shift Induced by Relay Asymmetry: An Iterative Solution Proposal

    Article • June 2023, Institute of Electrical & Electronics Engineers (IEEE)

    Assoc. Prof. Libor Pekař

  18. Asymmetric System Model Parameters Identification Framework via Relay Feedback

    Article • IEEE Access, January 2023, Institute of Electrical & Electronics Engineers (IEEE)

    Assoc. Prof. Libor Pekař

  19. Comparison of Stabilization with P/I-Delayed Controllers for Second-Order Systems Using Built-In MATLAB Heuristic Optimization Methods

    Article • January 2023, Springer Science + Business Media

    Assoc. Prof. Libor Pekař

  20. Optimized 8-Parameter Relay-Based Delayed Thermal Process Model Identification via Saturated Relay and Artificial Delay

    Article • January 2023, Springer Science + Business Media

    Assoc. Prof. Libor Pekař

  21. Stabilization of Second-Order Systems Using PI Controllers with Delayed Proportional and Integral Parts

    Article • January 2023, Springer Science + Business Media

    Assoc. Prof. Libor Pekař

  22. Stabilization of Second-Order Systems Using a P/I-Delayed Controller

    Article • January 2023, Springer Science + Business Media

    Assoc. Prof. Libor Pekař

  23. Calculation of robustly relatively stabilizing PID controllers for linear time-invariant systems with unstructured uncertainty

    Article • ISA Transactions, December 2022, Elsevier

    Assoc. Prof. Libor Pekař

  24. Modelling study on freezing process of water droplet on inclined cold plate surface with droplet dynamic behavior considered

    Article • International Journal of Heat and Mass Transfer, November 2022, Elsevier

    Assoc. Prof. Libor Pekař

  25. Effective Parametric Optimization of Heating-Cooling Process with Optimum near the Domain Border

    Article • October 2022, Institute of Electrical & Electronics Engineers (IEEE)

    Maciej Smołka, Assoc. Prof. Libor Pekař

  26. Socio-cognitive Optimization of Time-delay Control Problems using Agent-based Metaheuristics

    Article • October 2022, Institute of Electrical & Electronics Engineers (IEEE)

    Maciej Smołka, Assoc. Prof. Libor Pekař

  27. Socio-cognitive Optimization of Time-delay Control Problems using Evolutionary Metaheuristics

    Article • October 2022, Institute of Electrical & Electronics Engineers (IEEE)

    Maciej Smołka, Assoc. Prof. Libor Pekař

  28. Guide for Stabilization and Heuristic Optimization of Second-order Systems Controlled by P/I-delayed Controllers

    Article • October 2022, Institute of Electrical & Electronics Engineers (IEEE)

    Assoc. Prof. Libor Pekař

  29. Parameter identification of a delayed infinite-dimensional heat-exchanger process based on relay feedback and root loci analysis

    Article • Scientific Reports, June 2022, Springer Science + Business Media

    Assoc. Prof. Libor Pekař

  30. Editorial: Emerging Sustainable and Energy-Efficient Technologies in Heat Pumps for Residential Heating

    Article • Frontiers in Energy Research, March 2022, Frontiers

    Assoc. Prof. Libor Pekař

  31. Design of Robust PI Controllers for Interval Plants With Worst-Case Gain and Phase Margin Specifications in Presence of Multiple Crossover Frequencies

    Article • IEEE Access, January 2022, Institute of Electrical & Electronics Engineers (IEEE)

    Assoc. Prof. Libor Pekař

  32. Recursive least squares identification of heat exchanger system using block-structured models

    Article • Proceedings of the Institution of Mechanical Engineers Part I Journal of Systems and Control Engineering, November 2021, SAGE Publications

    Assoc. Prof. Libor Pekař

  33. Experimental Investigation and Control of a Hot-Air Tunnel with Improved Performance and Energy Saving

    Article • ACS Omega, June 2021, American Chemical Society (ACS)

    Assoc. Prof. Libor Pekař

  34. Numerical Gridding Stability Charts Estimation using Quasi-polynomial Approximation for TDS

    Article • June 2021, Institute of Electrical & Electronics Engineers (IEEE)

    Assoc. Prof. Libor Pekař

  35. A numerical study on frosting and its early stage under forced convection conditions with surface and environmental factors considered

    Article • Sustainable Energy Technologies and Assessments, April 2021, Elsevier

    Assoc. Prof. Libor Pekař

  36. On the Infinite-Dimensional Model Multiple-Parameter Estimation Using Feedback-Relay Identification Test

    Article • January 2021, Springer Science + Business Media

    Assoc. Prof. Libor Pekař

  37. Time Detection of Malware Threads

    Article • January 2021, Springer Science + Business Media

    Assoc. Prof. Libor Pekař

  38. A modeling study on the revere cycle defrosting of an air source heat pump with the melted frost downwards flowing away and local drainage

    Article • Energy and Buildings, November 2020, Elsevier

    Assoc. Prof. Libor Pekař

  39. Review of Kalah Game Research and the Proposition of a Novel Heuristic–Deterministic Algorithm Compared to Tree-Search Solutions and Human Decision-Making

    Article • Informatics, September 2020, MDPI AG

    Assoc. Prof. Libor Pekař

  40. Control of a Multivariable System Using Optimal Control Pairs: A Quadruple-Tank Process

    Article • IEEE Access, January 2020, Institute of Electrical & Electronics Engineers (IEEE)

    Assoc. Prof. Libor Pekař

  41. A Novel Frequency-Domain Approach for the Exact Range of Imaginary Spectra and the Stability Analysis of LTI Systems With Two Delays

    Article • IEEE Access, January 2020, Institute of Electrical & Electronics Engineers (IEEE)

    Assoc. Prof. Libor Pekař

  42. Design and Software Implementation of Heuristic and Suboptimal Strategies for the Mancala/Kalah Game

    Article • January 2020, Springer Science + Business Media

    Assoc. Prof. Libor Pekař

  43. Robust PI Control of Interval Plants With Gain and Phase Margin Specifications: Application to a Continuous Stirred Tank Reactor

    Article • IEEE Access, January 2020, Institute of Electrical & Electronics Engineers (IEEE)

    Assoc. Prof. Libor Pekař

  44. Value-Set-Based Approach to Robust Stability Analysis for Ellipsoidal Families of Fractional-Order Polynomials with Complicated Uncertainty Structure

    Article • Applied Sciences, December 2019, MDPI AG

    Assoc. Prof. Libor Pekař

  45. A Potential Use of the Balanced Tuning Method for the Control of a Class of Time-Delay Systems

    Article • June 2019, Institute of Electrical & Electronics Engineers (IEEE)

    Assoc. Prof. Libor Pekař

  46. Time-delay stability switching boundary determination for DC microgrid clusters with the distributed control framework

    Article • Applied Energy, October 2018, Elsevier

    Assoc. Prof. Libor Pekař

  47. Robust Stability of Fractional-Order Linear Time-Invariant Systems: Parametric versus Unstructured Uncertainty Models

    Article • Complexity, August 2018, Hindawi Publishing Corporation

    Assoc. Prof. Libor Pekař, Bilal Senol

  48. Advances in Modelling, Analysis, and Design of Delayed Systems

    Article • Mathematical Problems in Engineering, May 2018, Hindawi Publishing Corporation

    Assoc. Prof. Libor Pekař

  49. Some Recent Results on Direct Delay-Dependent Stability Analysis: Review and Open Problems

    Article • May 2018, Springer Science + Business Media

    Assoc. Prof. Libor Pekař

  50. A Suboptimal Shifting Based Zero-pole Placement Method for Systems with Delays

    Article • International Journal of Control Automation and Systems, March 2018, Springer Science + Business Media

    Assoc. Prof. Libor Pekař

  51. Spectrum Analysis of LTI Continuous-Time Systems With Constant Delays: A Literature Overview of Some Recent Results

    Article • IEEE Access, January 2018, Institute of Electrical & Electronics Engineers (IEEE)

    Assoc. Prof. Libor Pekař

  52. A comparative study of two tuning rules for delayed compensation controllers

    Article • MATEC Web of Conferences, January 2018, EDP Sciences

    Assoc. Prof. Libor Pekař

  53. Robust stability of thermal control systems with uncertain parameters: The graphical analysis examples

    Article • Applied Thermal Engineering, October 2017, Elsevier

    Assoc. Prof. Libor Pekař

  54. Robust stability of fractional order polynomials with complicated uncertainty structure

    Article • PLOS One, June 2017, PLOS

    Assoc. Prof. Libor Pekař

  55. Gridding discretization-based multiple stability switching delay search algorithm: The movement of a human being on a controlled swaying bow

    Article • PLOS One, June 2017, PLOS

    Assoc. Prof. Libor Pekař

  56. Compromising controller parameters setting for a delayed thermal process

    Article • June 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Assoc. Prof. Libor Pekař

  57. Direct stability-switching delays determination procedure with differential averaging

    Article • Transactions of the Institute of Measurement and Control, April 2017, SAGE Publications

    Assoc. Prof. Libor Pekař

  58. Algebraic robust control of a closed circuit heating-cooling system with a heat exchanger and internal loop delays

    Article • Applied Thermal Engineering, February 2017, Elsevier

    Assoc. Prof. Libor Pekař

  59. Improved and innovated universal DAQ microcontroller unit

    Article • January 2017, De Gruyter

    Assoc. Prof. Libor Pekař

  60. The revision and extension of the RMS ring for time delay systems

    Article • Bulletin of the Polish Academy of Sciences Technical Sciences, January 2017, De Gruyter

    Assoc. Prof. Libor Pekař

  61. Enhanced TDS Stability Analysis Method via Characteristic Quasipolynomial Polynomization

    Article • January 2017, Springer Science + Business Media

    Assoc. Prof. Libor Pekař

  62. Robust Stabilization of a Heating-Cooling System by Using Two Feedback Controllers: a Numerical-Graphical Analysis

    Article • January 2017, DAAAM International

    Assoc. Prof. Libor Pekař

  63. Dominant Spectrum Assignment For Neutral Time Delay Systems: A Study Case

    Article • June 2016, European Council for Modeling and Simulation

    Assoc. Prof. Libor Pekař

  64. Delay systems with meromorphic functions design

    Article • June 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Assoc. Prof. Libor Pekař

  65. A comparison of possible exponential polynomial approximations to get commensurate delays

    Article • MATEC Web of Conferences, January 2016, EDP Sciences

    Assoc. Prof. Libor Pekař

  66. Polynomial Approximation of Quasipolynomials Based on Digital Filter Design Principles

    Article • January 2016, Springer Science + Business Media

    Assoc. Prof. Libor Pekař

  67. On delay (in)dependent stability for TDS

    Article • October 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Assoc. Prof. Libor Pekař

  68. A Simple DDS Algorithm For TDS: An Example

    Article • May 2015, European Council for Modeling and Simulation

    Assoc. Prof. Libor Pekař

  69. Simulation Of Robust Algebraic Control Of A Delayed Heat Exhanger With Controller Rationalization

    Article • May 2015, European Council for Modeling and Simulation

    Assoc. Prof. Libor Pekař

  70. Algebraic Methods in Autotuning Design: Theory and Design

    Article • January 2015, Springer Science + Business Media

    Assoc. Prof. Libor Pekař

  71. Extension of the Pole-Placement Shifting Based Tuning Algorithm to Neutral Delay Systems: A Case Study

    Article • January 2015, Springer Science + Business Media

    Assoc. Prof. Libor Pekař

  72. Control of time delay systems in a robust sense using two controllers

    Article • May 2014, Institute of Electrical & Electronics Engineers (IEEE)

    Assoc. Prof. Libor Pekař

  73. PPSA: A Tool for Suboptimal Control of Time Delay Systems: Revision and Open Tasks

    Article • January 2014, Springer Science + Business Media

    Assoc. Prof. Libor Pekař

  74. TFC robust control design for time delay systems — Analysis and example

    Article • June 2013, Institute of Electrical & Electronics Engineers (IEEE)

    Assoc. Prof. Libor Pekař

  75. Saturation Relay vs. Relay Transient Identification Tests For A TDS Model

    Article • May 2013, European Council for Modeling and Simulation

    Assoc. Prof. Libor Pekař

  76. On Finite-Dimensional Transformations of Anisochronic Controllers Designed by Algebraic Means: A User Interface

    Article • September 2012, IntechOpen

    Assoc. Prof. Libor Pekař

  77. Spectral Abscissa Minimization when Algebraic Control of Unstable LTI-TDS

    Article • IFAC Proceedings Volumes, January 2012, Elsevier

    Assoc. Prof. Libor Pekař

  78. Implementation of a New Quasi-Optimal Controller Tuning Algorithm for Time-Delay Systems

    Article • October 2011, IntechOpen

    Assoc. Prof. Libor Pekař

  79. Non-stepwise reference tracking for time delay systems

    Article • May 2011, Institute of Electrical & Electronics Engineers (IEEE)

    Assoc. Prof. Libor Pekař

  80. ON REFERENCE TRACKING AND DISTURBANCE REJECTION FOR TIME DELAY SYSTEMS

    Article • January 2011, ACTA Press

    Assoc. Prof. Libor Pekař

  81. Autotuning for delay systems using meromorphic functions

    Article • IFAC Proceedings Volumes, January 2010, Elsevier

    Assoc. Prof. Libor Pekař

  82. Control Design for Stable Systems with Both Input-Output and Internal Delays by Algebraic Means

    Article • January 2010, ACTA Press

    Assoc. Prof. Libor Pekař

  83. Design of controllers for delayed integration processes using RMS ring

    Article • June 2008, Institute of Electrical & Electronics Engineers (IEEE)

    Assoc. Prof. Libor Pekař

  84. Algebraic control of unstable delayed first order systems using RQ-meromorphic functions

    Article • June 2007, Institute of Electrical & Electronics Engineers (IEEE)

    Assoc. Prof. Libor Pekař

  85. Control of systems with periodic time-varying parameters: An algebraic approach

    Article • June 2007, Institute of Electrical & Electronics Engineers (IEEE)

    Assoc. Prof. Libor Pekař

  86. TIME DELAY SYSTEMS – MEROMORPHIC FUNCTIONS CONTROL APPROACH

    Article • IFAC Proceedings Volumes, January 2007, Elsevier

    Assoc. Prof. Libor Pekař