<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The paper considers a survey of the research procedures and results due to invariant control method application perspective for operation quality advancement in several technological plants (wastewater biological treatment tanks and water steam production boilers), which operate under influence of organised and random disturbances. A specified subject of research is the simulation model of the multi-link invariant control system for steam pressure stabilisation in a steam boiler by preemptive compensation of steam load and feed water flow impact on output parameter (steam pressure), developed in MATLAB/SIMULINK. Simulation block-diagram of the steam boiler invariant control system, containing closed loop PID control circuit and open loop DPC circuit, has been composed on the basis of the designed mathematical model of the system components, disturbance compensation algorithms, and operational equation of the invariant control system. Comparative response of the steam boiler, operating under influence of fluctuating disturbances, with conventional PID control and using PID-DPC control with disturbance compensation controller DPC, has been investigated. Simulation results of invariant PID – DPC control system show that output parameter of the steam boiler - pressure remains practically constant under fluctuating disturbances due to a high-speed response of DPC controller.</p></abstract>

The paper considers a survey of the research procedures and results due to invariant control method application perspective for operation quality advancement in several technological plants (wastewater biological treatment tanks and water steam production boilers), which operate under influence of organised and random disturbances. A specified subject of research is the simulation model of the multi-link invariant control system for steam pressure stabilisation in a steam boiler by preemptive compensation of steam load and feed water flow impact on output parameter (steam pressure), developed in MATLAB/SIMULINK. Simulation block-diagram of the steam boiler invariant control system, containing closed loop PID control circuit and open loop DPC circuit, has been composed on the basis of the designed mathematical model of the system components, disturbance compensation algorithms, and operational equation of the invariant control system. Comparative response of the steam boiler, operating under influence of fluctuating disturbances, with conventional PID control and using PID-DPC control with disturbance compensation controller DPC, has been investigated. Simulation results of invariant PID – DPC control system show that output parameter of the steam boiler - pressure remains practically constant under fluctuating disturbances due to a high-speed response of DPC controller.

Invariant Control of the Technological Plants to Compensate an Impact of Main Disturbances Preemptively

Latvia University of Agriculture, Faculty of Engineering, Institute of Energetics, 5 J. Cakstes Blvd., Jelgava, LV-3001, LATVIA

Latvian Journal of Physics and Technical Sciences

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

The paper considers a survey of the research procedures and results due to invariant control method application perspective for operation quality advancement...

Invariant Control of the Technological Plants to Compensate an Impact of Main Disturbances Preemptively

Published Online: Jul 27, 2016

Page range: 34 - 44

DOI: https://doi.org/10.1515/lpts-2016-0019

Keywords
controller, disturbance, invariant control, simulation model, steam boiler, technological plant, wastewater aeration

© 2016 A. Sniders et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Invariant Control of the Technological Plants to Compensate an Impact of Main Disturbances Preemptively

Published Online: Jul 27, 2016

Page range: 34 - 44

DOI: https://doi.org/10.1515/lpts-2016-0019

Keywordscontroller, disturbance, invariant control, simulation model, steam boiler, technological plant, wastewater aeration

© 2016 A. Sniders et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
controller, disturbance, invariant control, simulation model, steam boiler, technological plant, wastewater aeration