Optimal vs. robust algorithms of active resource management in networked systems – design and property analysis
(Optymalne a odporne algorytmy aktywnego zarządzania zasobami w układach sieciowych – projektowanie i analiza właściwości)
PROGRAM: Iuventus Plus IV
No: 0156/IP2/2015/73
FUNDING INST.: Ministry of Science and Higher Education, Poland
REALIZED AT: Lodz University of Technology, Poland
DATES: Feb. 2015 – Feb. 2017
LEADER: Przemysław Ignaciuk, PhD, DSc
STATUS: completed


The purpose of the project was to create realistic models of networked systems, taking into account phenomena associated with information exchange in a distributed environment, e.g., sampling, quantization, delay, jitter, packet loss, etc.
The models served as a basis for control algorithm design, which involved robust control methods, e.g., sliding-mode control, and dynamic optimization. The designed algorithms were subjected to rigorous formal and experimental analysis using the created in the project test setup. The test setup includes both the benchmark plants with sensors and actuators (e.g., inverted pendulum on a cart system) and networking modules providing the interface for various communication technologies typically applied in remote control settings.
The designed new algorithms and control schemes not only ensure a high degree of robustness to perturbations and network-induced uncertainties but also good operational efficiency in the actual implementation.

Laboratory setup


  1. P. Ignaciuk: State-space modeling and analysis of order-up-to goods distribution networks with variable demand and positive lead time, rozdział w monografii Information Systems Architecture and Technology: Proceedings of 37th International Conference on Information Systems Architecture and Technology – ISAT 2016 – Part IV (red. Z. Wilimowska, L. Borzemski, A. Grzech, J. Świątek,), Advances in Intelligent Systems and Computing 524, Springer, 2017, pp. 55-65.
  2. M. Morawski, P. Ignaciuk: Adjustable sampling rate – an efficient way to reduce the impact of network-induced uncertainty in Networked Control Systems? rozdział w monografii Computer Networks, Communications in Computer and Information Science, Vol. 608 (red. P. Gaj, A. Kwiecień, P. Stera), Springer International Publishing Switzerland, 2016, pp. 329-343.
  1. Morawski M., Ignaciuk P.: Network nodes play a game – a routing alternative in multihop ad-hoc environments. Computer Networks, Vol. 122, 2017, pp. 96-104.
  2. M. Morawski, P. Ignaciuk: Reducing impact of network induced perturbations in remote control systems. Control Engineering Practice, Vol. 55, No. 10, 2016, pp. 127-138.
  3. P. Ignaciuk: DARE solutions for LQ optimal and suboptimal control of systems with multiple input-output delays. Journal of The Franklin Institute, Special issue on Matrix Equations with Application to Control Theory, Vol. 353, No. 5, 2016, pp. 974-991.
  1. M. Morawski, P. Ignaciuk: Ruting niejedyną skuteczną metodą organizacji ruchu w sieciach. Studia Informatica, Vol. 37, No. 2, 2016, pp. 137-146. (in Polish)
  2. M. Morawski, P. Ignaciuk: Optymalizacja działania protokołu MPTCP pod kątem zużycia energii. Przegląd Telekomunikacyjny i Wiadomości Telekomunikacyjne, Vol. 89, No. 8-9, 2016, pp. 785-788. (in Polish)
  1. P. Ignaciuk, K. J. Al-Saadi: Distributed order-up-to inventory management in logistic networks under uncertain demand – system modelling and analysis. 2016 International Conference on Computer, Control, Informatics and its Applications, Jakarta, Indonesia, Oct. 2016, pp. 60-65.
  2. P. Ignaciuk: Predictor-based dynamic soft VSC in time-delay systems with magnitude-constrained input signal. 2016 International Conference on Computer, Control, Informatics and its Applications, Jakarta, Indonesia, Oct. 2016, pp. 66-71.
  3. P. Ignaciuk: Dynamic quasi-soft VSC of discrete-time systems with magnitude-constrained inputs. 21st International Conference on Methods and Models in Automation and Robotics, Międzyzdroje, Poland, Aug. 2016, pp. 1033-1038.
  4. P. Ignaciuk, M. Morawski: Soft Variable Structure Control in sampled-data systems with saturating input. 13th International Conference on Informatics in Control, Automation and Robotics, Lisbon, Portugal, Jul. 2016, Vol. 1, pp. 545-550.
  5. P. Ignaciuk: DSM relay control of logistic networks under delayed replenishments and uncertain demand. 24th Mediterranean Conference on Control and Automation, Athens, Greece, Jun. 2016, pp. 250-255.
  6. P. Ignaciuk: Augmented state space approach for solving infinite-horizon linear-quadratic problem in discrete-time systems with mulitple time-delays. 19th International Conference on System Theory, Control and Computing, Cheile Gradistei, Romunia, Oct. 2015, pp. 635-640.
  7. P. Ignaciuk: Approximate solution of linear-quadratic problem in discrete-time multi-delay systems: derivation and quality assessment. 16th IFAC Workshop on Control Applications of Optimization, Garmisch-Partenkirchen, Germany, Oct. 2015, pp. 97-102.
  8. P. Ignaciuk: Order-up-to networked policy for periodic-review goods distribution systems with delay. 12th International Conference on Informatics in Control, Automation and Robotics, Colmar, France, Jul. 2015, Vol. 2, pp. 498-503.
  9. P. Ignaciuk: On LQ optimal control of uncapacitated goods distribution systems with non-negligible transport delay. 2015 American Control Conference, Chicago, IL, USA, Jul. 2015, pp. 2936-2941.
  10. P. Ignaciuk, M. Morawski: Mitigating the impact of delay uncertainty on the performance of LQ optimal remote control systems. 12th IFAC Workshop on Time Delay Systems, Ann Arbor, MI, USA, Jun. 2015, pp. 452-457.