AI-Based Solution for Efficient Disturbance Rejection in Mini Hydropower Plant Roxana Motorga, Vlad Muresan, Mihail Abrudean, Daniel Moga, Nicoleta Stroia, Cristian Bondici IFAC Papersonline, 2025 This paper presents a systematic comparison of four advanced control strategies for disturbance rejection in a mini hydropower plant. The control strategies that are proposed include a conventional PID controller, a FOPID controller, an Internal Model Control with PD controller, and an adaptive PID controller implemented using discretization and artificial intelligence techniques. The mini hydropower plant is modelled using a fractional differentiation order process, capturing the complex dynamics and nonlinearities inherent in such systems. The performance of each controller is evaluated in terms of disturbance rejection, set-point tracking, and robustness to parameter variations. Simulation results demonstrate the strengths and limitations of each control strategy, providing valuable insights for the selection and design of controllers in mini hydropower applications. These findings highlight the effectiveness of the IMC-PD approach in handling disturbances and maintaining system stability, while the adaptive PID controller shows promise for applications requiring adaptability under varying conditions. The study provides valuable insights for the selection and design of controllers in mini hydropower systems, contributing to the advancement of efficient and reliable control strategies for renewable energy applications.
Modeling of Must Fermentation Processes for Enabling CO2 Rate-Based Control Nicoleta Stroia, Alexandru Lodin Mathematics, 2025 Models for must fermentation kinetics are investigated and used in simulations for enabling control strategies based on temperature adjustment during the alcoholic fermentation process using the estimated CO2 rate. An acoustic emission digital processing approach for estimating the CO2 rate in the must fermentation process is proposed and investigated. The hardware architecture was designed considering easy integration with other sensor networks, remote monitoring of the fermentation-related parameters, and wireless communication between the fermentation vessel and the processing unit. It includes a virtual CO2 rate sensor, having as input the audio signal collected by a microphone and as output the estimated CO2 rate. Digital signal processing performed on an embedded board involves acquisition, filtering, analysis, and feature extraction. Time domain-based methods for analyzing the audio signal were implemented. An experimental setup with a small fermentation vessel (100 L) was used for CO2 rate monitoring during the fermentation of grape must. The estimated CO2 rate data were fitted with the CO2 rate profiles generated by simulating the models under similar conditions. Simulations for controlling fermentation kinetics through a CO2 rate-based temperature control were performed and analyzed. The simulations indicate the proposed approach as valid for a closed-loop system implementation capable of controlling kinetics behavior using estimated CO2 rate and temperature control.
Optimal resource scheduling for a greenhouse powered by an islanded microgrid Nicoleta Stroia, Daniel Moga, Dorin Petreus, Nicolae Alexandru Sarbu, Eniko Lazar, Alexandru Lodin Proceedings of the International Spring Seminar on Electronics Technology, 2024 The paper investigates solutions for optimal management of energy in a greenhouse powered by an islanded microgrid. A day-ahead optimization procedure for scheduling the resources in such an islanded microgrid with multiple generators is investigated in order to cope with the predicted greenhouse energy demand curve while minimizing the energy cost and maintaining the recommended operation of the microgrid equipment. Cuckoo Search (CS) algorithm was used for solving the optimization procedure. Several scenarios were considered based on the initial value of the energy stored in the batteries. The results were compared to those obtained by running the Mixed Integer Linear Programming (MILP) algorithm.
Integrated Smart-Home Architecture for Supporting Monitoring and Scheduling Strategies in Residential Clusters Nicoleta Stroia, Daniel Moga, Dorin Petreus, Alexandru Lodin, Vlad Muresan, Mirela Danubianu Buildings, 2022 The monitoring of power consumption and the forecasting of load profiles for residential appliances are essential aspects of the control of energy savings/exchanges at multiple hierarchical levels: house, house cluster, neighborhood, and city. External environmental factors (weather conditions) and inhabitants’ behavior influence power consumption, and their usage as part of forecasting activity may lead to added value in the estimation of daily-load profiles. This paper proposes a distributed sensing infrastructure for supporting the following tasks: the monitoring of appliances’ power consumption, the monitoring of environmental parameters, the generation of records for a database that can be used for both identifying load models and testing load-scheduling algorithms, and the real-time acquisition of consumption data. The hardware/software codesign of an integrated architecture that can combine the typical distributed sensing and control networks present in modern buildings (targeting user comfort) with energy-monitoring and management systems is presented. Methods for generating simplified piecewise linear (PWL) representations of the load profiles based on these records are introduced and their benefits compared with classic averaged representations are demonstrated for the case of peak-shaving strategies. The proposed approach is validated through implementing and testing a smart-meter node with wireless communication and other wired/wireless embedded modules, enabling the tight integration of the energy-monitoring system into smart-home/building-automation systems. The ability of this node to process power measurements with a programable granularity level (seconds/minutes/hours) at the edge level and stream the processed measurement results at the selected granularity to the cloud is identified as a valuable feature for a large range of applications (model identification, power saving, prediction).
Fault Tolerant Control System for a Mini Hydropower Plant Vlad Mureşan, Mihail Abrudean, Daniel Moga, Dorin Petreuş, Nicoleta Stroia, Cristian Bondici, Marius Fişcă, Mircea Cohuţ IFAC Papersonline, 2022 In this paper, a solution for the fault tolerant control of a mini hydropower plant is proposed. The mathematical model which describes the dynamics of the electrical energy production process is identified based on processing the experimental data measured during the plant operation. The main real power and frequency control strategy is based on implementing the cascade control structure. In order to obtain the fault tolerance property, the initial form of the cascade structure is augmented by introducing additional elements which identify the faults and reject their effects. In order to implement the faults identifier and the correction mechanism, artificial intelligence methods, based on neural networks, are used.
Short term estimation of environmental variables for improving the fault tolerance of distributed control networks Nicoleta Stroia, Daniel Moga, Alexandru Lodin Proceedings of the 16th IEEE Conference on Industrial Electronics and Applications Iciea 2021, 2021 Methodologies for estimating missing sensor data in order to assure proper functionality of a monitoring and control system are presented. Short term forecasting models for learning the dependencies between the measured sensor values are analyzed. Experiments were performed in Matlab for selecting a model and its associated structure appropriate for deployment on an embedded module. Once the structure is fixed, the embedded module is then responsible for estimating the model parameters and forecasting the environmental variables for a short time horizon.
A Cost-effective embedded platform for greenhouse environment control and remote monitoring Radu L. Sumalan, Nicoleta Stroia, Daniel Moga, Vlad Muresan, Alexandru Lodin, Teodor Vintila, Cosmin A. Popescu Agronomy, 2020 This paper presents the development of a cost-effective automatic system for greenhouse environment control. The architectural and functional features were analyzed in the context of the realization of a controlled-environment agricultural system through all its stages: installation, deployment of the software, integration, maintenance, crop control strategy setup and daily operation of the grower. The proposed embedded platform provides remote monitoring and control of the greenhouse environment and is implemented as a distributed sensing and control network integrating wired and wireless nodes. All nodes were built with low-cost, low-power microcontrollers. The key issues that were addressed include the energy-efficient control, the robustness of the distributed control network to faults and a low-cost hardware implementation. The translation of the supervisory growth-planning information to the operational (control network) level is achieved through a specific architecture residing on a crop planning module (CPM) and an interfacing block (IB). A suite of software applications with flows and interfaces developed from a grower-centric perspective was designed and implemented on a multi-tier architecture. The operation of the platform was validated through implementation of sensing and control nodes, application of software for configuration and visualization, and deployment in typical greenhouses.
Estimating environmental variables in smart sensor networks with faulty nodes Smartgreens 2020 Proceedings of the 9th International Conference on Smart Cities and Green ICT Systems, 2020
Fault Tolerant Control System for Photovoltaic Panels Application V. Mureşan, D. Moga, D. Petreuş, M. Abrudean, N. Stroia, R. Moga IFAC Papersonline, 2019 The paper presents a solution to control the power delivery system in a microgrid in which the primary energy source is using photovoltaic panels. The proposed mathematical models describe the operation of the main system blocks and are used as reference models in the fault detection mechanism. Using a complex control strategy, the generated power is controlled and the effects of the disturbances which occur in the system, including the faults, are rejected, making the proposed solution a robust and a fault tolerant one. The integrated control solution contains algorithms for the appropriate control of both the boost DC/DC converter and of the single phase inverter blocks. The proposed approaches are directed toward developing algorithms suitable for real-time implementation on 32 bit ARM processors.
Modelling and simulation of a remote controlled mechatronic device Alexandru Lodin, Daniel Moga, Nicoleta Stroia, Dorin Petreus, Vlad Muresan, Radu Adrian Munteanu, Luige Vladareanu Periodicals of Engineering and Natural Sciences, 2019 The paper introduces the design, modelling and simulation of an electromechanical actuator device able to produce periodical translation movement. The parameters characterizing this movement (stroke length, force, speed profile) are considered to be remotely programmable via a wireless interface.
Sensing and control strategies in tracking solar systems Daniel Moga, Ioan-Valentin Sita, Nicoleta Stroia, Petru Dobra, Rozica Moga, Dorin Petreus Proceedings 2015 20th International Conference on Control Systems and Computer Science Cscs 2015, 2015
Modeling of Must Fermentation Processes for Enabling CO 2 Rate-Based Control N Stroia, A Lodin Mathematics 13 (10), 1653 , 2025 2025 Citations: 1
AI-Based Solution For Efficient Disturbance Rejection in Mini Hydropower Plant R Motorga, V Muresan, M Abrudean, D Moga, N Stroia, C Bondici IFAC-PapersOnLine 59 (9), 175-180 , 2025 2025
Optimal resource scheduling for a greenhouse powered by an islanded microgrid N Stroia, D Moga, D Petreus, NA Sarbu, E Lazar, A Lodin 2024 47th International Spring Seminar on Electronics Technology (ISSE) 2024 … , 2024 2024
Integrated smart-home architecture for supporting monitoring and scheduling strategies in residential clusters N Stroia, D Moga, D Petreus, A Lodin, V Muresan, M Danubianu Buildings 12 (7), 1034 , 2022 2022 Citations: 12
Fault tolerant control system for a mini hydropower plant V Mureşan, M Abrudean, D Moga, D Petreuş, N Stroia, C Bondici, M Fişcă, ... IFAC-PapersOnLine 55 (9), 537-542 , 2022 2022 Citations: 9
Short term estimation of environmental variables for improving the fault tolerance of distributed control networks N Stroia, D Moga, A Lodin 2021 IEEE 16th Conference on Industrial Electronics and Applications (ICIEA … , 2021 2021
A Cost-effective embedded platform for greenhouse environment control and remote monitoring RL Sumalan, N Stroia, D Moga, V Muresan, A Lodin, T Vintila, ... Agronomy 10 (7), 936 , 2020 2020 Citations: 53
Estimating Environmental Variables in Smart Sensor Networks with Faulty Nodes. N Stroia, D Moga, V Muresan, A Lodin SMARTGREENS, 67-73 , 2020 2020 Citations: 4
Fault tolerant control system for photovoltaic panels application V Mureşan, D Moga, D Petreuş, M Abrudean, N Stroia, R Moga IFAC-PapersOnLine 52 (4), 354-359 , 2019 2019 Citations: 5
Modelling and simulation of a remote controlled mechatronic device A Lodin, D Moga, N Stroia, D Petreus, V Muresan, RA Munteanu, ... Periodicals of Engineering and Natural Sciences 7 (1) , 2019 2019
Extending battery life time in the wireless sensor applications with fluorescent optical fiber concentrator R Galatus, D Petreus, D Moga, T Marita, N Stroia 2018 IEEE International Instrumentation and Measurement Technology … , 2018 2018 Citations: 11
The importance of the analysis of imperial portraits on Roman coins, for dating the withdrawal from Dacia province M Munteanu, N Stroia în Acta Electrotehnica 59 (3), 245-250 , 2018 2018
Fault detection and fault tolerance mechanism for DC/DC converters in microgrids V Muresan, D Moga, D Petreus, M Abrudean, N Stroia, R Moga IFAC-PapersOnLine 51 (28), 666-671 , 2018 2018 Citations: 12
Modelling a Temperature Calibration System for Medical Probes CB Rusu, C Lungoci, D Moga, G Cosovici, N Stroia 2017 21st International Conference on Control Systems and Computer Science … , 2017 2017 Citations: 1
Web based solution for remote monitoring of an islanded microgrid D Moga, D Petreus, N Stroia IECON 2016-42nd Annual Conference of the IEEE Industrial Electronics Society … , 2016 2016 Citations: 9
Internet based SCADA platform for monitoring strategic hydrotechnical structures N Stroia, D Moga, E Vitan, G Cosovici, C Lungoci, I Kovacs, M Mircea 2016 IEEE International Conference on Automation, Quality and Testing … , 2016 2016 Citations: 3
Modeling and control of the temperature for cytostatic solutions used in surgical procedures V Muresan, I Clitan, D Moga, R Moga, G Cosovici, N Stroia, C Lungoci, ... 2016 International Conference on Control, Decision and Information … , 2016 2016
Optimal generation scheduling in islanded microgrids D Moga, D Petreuş, V Mureşan, N Stroia, G Cosovici IFAC-PapersOnLine 49 (27), 135-139 , 2016 2016 Citations: 19
Hyperthermic intraperitoneal chemotherapy approach based on cyber-physical system paradigm C Lungoci, D Moga, V Muresan, D Petreus, N Stroia, R Moga, ... Journal of Control Engineering and Applied Informatics 17 (3), 50-59 , 2015 2015 Citations: 6
Experimental Identification of Heating Process from Hyperthermic Intraperitoneal Chemotherapy (HIPEC) Equipment I Clitan, D Moga, C Lungoci, V Muresan, N Stroia Applied Mechanics and Materials 772, 626-630 , 2015 2015 Citations: 2
MOST CITED SCHOLAR PUBLICATIONS
A Cost-effective embedded platform for greenhouse environment control and remote monitoring RL Sumalan, N Stroia, D Moga, V Muresan, A Lodin, T Vintila, ... Agronomy 10 (7), 936 , 2020 2020 Citations: 53
A wireless system for monitoring the progressive loading of lower limb in post-traumatic rehabilitation F Neaga, D Moga, D Petreus, M Munteanu, N Stroia International Conference on Advancements of Medicine and Health Care through … , 2011 2011 Citations: 26
Optimal generation scheduling in islanded microgrids D Moga, D Petreuş, V Mureşan, N Stroia, G Cosovici IFAC-PapersOnLine 49 (27), 135-139 , 2016 2016 Citations: 19
A low cost architecture for remote control and monitoring of greenhouse fields D Moga, D Petreus, N Stroia 2012 7th IEEE Conference on Industrial Electronics and Applications (ICIEA … , 2012 2012 Citations: 16
Assessment of temperature distribution in intraperitoneal chemohyperthermia C Lungoci, I Raus, T Oniu, D Moga, N Stroia, V Muntean, D Petreus, ... International Conference on Advancements of Medicine and Health Care through … , 2014 2014 Citations: 14
Embedded Platform for Web-based Monitoring and Control of a Smart Home D Moga, N Stroia, D Petreus, R Moga, RA Munteanu 2015 Citations: 13
Web based monitoring of solar power systems N Stroia, D Moga, Z Barabas IFAC Proceedings Volumes 46 (6), 131-136 , 2013 2013 Citations: 13
Integrated smart-home architecture for supporting monitoring and scheduling strategies in residential clusters N Stroia, D Moga, D Petreus, A Lodin, V Muresan, M Danubianu Buildings 12 (7), 1034 , 2022 2022 Citations: 12
Fault detection and fault tolerance mechanism for DC/DC converters in microgrids V Muresan, D Moga, D Petreus, M Abrudean, N Stroia, R Moga IFAC-PapersOnLine 51 (28), 666-671 , 2018 2018 Citations: 12
Extending battery life time in the wireless sensor applications with fluorescent optical fiber concentrator R Galatus, D Petreus, D Moga, T Marita, N Stroia 2018 IEEE International Instrumentation and Measurement Technology … , 2018 2018 Citations: 11
Self organized criticality in an one dimensional magnetized grid. Application to GRB X-ray afterglows T Harko, G Mocanu, N Stroia Astrophysics and Space Science 357 (1), 84 , 2015 2015 Citations: 11
Fault tolerant control system for a mini hydropower plant V Mureşan, M Abrudean, D Moga, D Petreuş, N Stroia, C Bondici, M Fişcă, ... IFAC-PapersOnLine 55 (9), 537-542 , 2022 2022 Citations: 9
Web based solution for remote monitoring of an islanded microgrid D Moga, D Petreus, N Stroia IECON 2016-42nd Annual Conference of the IEEE Industrial Electronics Society … , 2016 2016 Citations: 9
Sensing and control strategies in tracking solar systems D Moga, IV Sita, N Stroia, P Dobra, R Moga, D Petreus 2015 20th International Conference on Control Systems and Computer Science … , 2015 2015 Citations: 8
Development of a hyperthermic intra-peritoneal chemotherapy equipment architecture based on the cyber-physical system paradigm N Stroia, D Moga, C Lungoci, R Moga, D Petreus, I Dumitrache, F Filip Third international workshop on cyber physical systems , 2014 2014 Citations: 7
A low cost approach to large smart shelf setups F Hrebenciuc, N Stroia, D Moga, Z Barabas Advances in Electrical and Computer Engineering 11 (4), 117-122 , 2011 2011 Citations: 7
Hyperthermic intraperitoneal chemotherapy approach based on cyber-physical system paradigm C Lungoci, D Moga, V Muresan, D Petreus, N Stroia, R Moga, ... Journal of Control Engineering and Applied Informatics 17 (3), 50-59 , 2015 2015 Citations: 6
Fault tolerant control system for photovoltaic panels application V Mureşan, D Moga, D Petreuş, M Abrudean, N Stroia, R Moga IFAC-PapersOnLine 52 (4), 354-359 , 2019 2019 Citations: 5
Hydropower structures monitoring system with hierarchically distributed smart sensor network N Stroia, D Moga, I Kovacs, G Mocanu, M Dobra IFAC Proceedings Volumes 46 (6), 37-41 , 2013 2013 Citations: 5
Estimating Environmental Variables in Smart Sensor Networks with Faulty Nodes. N Stroia, D Moga, V Muresan, A Lodin SMARTGREENS, 67-73 , 2020 2020 Citations: 4
