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Journal articles on the topic 'RL filter'

Author: Grafiati

Published: 14 March 2023

Last updated: 31 July 2025

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1

Kumar, R. Senthil, Dr Prabakaran S, and Dr S. Sentamil Selvan. "Power Quality Improvement Grid Integrated Photovoltaic with LCL Filter Using DQ Controller." International Journal of Electrical and Electronics Research 11, no. 2 (2023): 283–90. http://dx.doi.org/10.37391/ijeer.110206.

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Grid-interactive solar photovoltaic (PV) systems are necessary for the current global scenario owing to their low cost and pollution-free energy source. The integration of PV systems in the power grid needs to be stabilized. To address this, this paper presents a composite controller that can synchronize Photovoltaic (PV) to the Grid, with bidirectional power flow in Grid. The proposed technique is explored with both RL and LCL filters. With grid synchronization of PV power generation, a control loop for power quality disturbance mitigation is simulated. The multicarrier SVPWM with DQ controll

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Liao, Liqing, Xiangyang Liu, Jingyang Zhou, Wenrui Yan, and Mi Dong. "High-Order Grid-Connected Filter Design Based on Reinforcement Learning." Energies 18, no. 3 (2025): 586. https://doi.org/10.3390/en18030586.

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In grid-connected inverter systems, grid-connected filters can effectively eliminate harmonics. High-order filters perform better than conventional filters in eliminating harmonics and can reduce costs. For high-order filters, the use of multi-objective optimization algorithms for parameter optimization presupposes that the circuit structure must be known. To realize the design of the filter structure and related circuit parameters that meet the requirements of the grid-connected inverter system during the design process, this paper proposes a reinforcement learning (RL) method for designing h

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3

Sariyar, M., and A. Borg. "Deterministic Linkage as a Preceding Filter for Other Record Linkage Methods." International Journal of Information Technology & Decision Making 14, no. 03 (2015): 521–33. http://dx.doi.org/10.1142/s0219622015500108.

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Deterministic record linkage (RL) is frequently regarded as a rival to more sophisticated strategies like probabilistic RL. We investigate the effect of combining deterministic linkage with other linkage techniques. For this task, we use a simple deterministic linkage strategy as a preceding filter: a data pair is classified as ‘match' if all values of attributes considered agree exactly, otherwise as ‘nonmatch'. This strategy is separately combined with two probabilistic RL methods based on the Fellegi–Sunter model and with two classification tree methods (CART and Bagging). An empirical comp

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Bolster, Lauren, Mark Bosch, Brian Brownbridge, and Anurag Saxena. "RAP Trial: Ringer's Lactate and Packed Red Blood Cell Transfusion, An in Vitro Study and Chart Review." Blood 114, no. 22 (2009): 2105. http://dx.doi.org/10.1182/blood.v114.22.2105.2105.

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Abstract Abstract 2105 Poster Board II-82 Background: The Canadian Blood Services and the American Association of Blood Banks state that intravenous solution administered with packed red blood cells (pRBC) must be isotonic and must not contain calcium or glucose. This recommendation is based on in vitro investigations demonstrating that calcium containing solutions can initiate in vitro coagulation in citrated blood (Ryden 1975, Dickson 1980, Lorenzo 1998). Recently this recommendation has been challenged by in vitro studies that combined AS-3 pRBC with Ringer's Lactate (RL) (Albert 2009). Cur

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Di Gioia, Michele, Luigi Lombardi, Cristoforo Marzocca, et al. "Signal-to-Noise Ratio Analysis for the Voltage-Mode Read-Out of Quartz Tuning Forks in QEPAS Applications." Micromachines 14, no. 3 (2023): 619. http://dx.doi.org/10.3390/mi14030619.

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Quartz tuning forks (QTFs) are employed as sensitive elements for gas sensing applications implementing quartz-enhanced photoacoustic spectroscopy. Therefore, proper design of the QTF read-out electronics is required to optimize the signal-to-noise ratio (SNR), and in turn, the minimum detection limit of the gas concentration. In this work, we present a theoretical study of the SNR trend in a voltage-mode read-out of QTFs, mainly focusing on the effects of (i) the noise contributions of both the QTF-equivalent resistor and the input bias resistor RL of the preamplifier, (ii) the operating freq

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Spindler, Gerald. "Upload-Filter: Umsetzungsoptionen zu Art. 17 DSM-RL." Computer und Recht 36, no. 1 (2020): 50–59. http://dx.doi.org/10.9785/cr-2020-360112.

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Lu, Di, N. Scott Barker, and Xiao-Hong Tang. "Miniaturized dual-band filter with return loss bandwidth and transmission zero control." International Journal of Microwave and Wireless Technologies 9, no. 7 (2017): 1459–65. http://dx.doi.org/10.1017/s1759078717000071.

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In this paper, a compact dual-band bandpass filter (DB-BPF) using new dual-mode resonator-loaded resonators (DM-RLRs) is presented and investigated to simultaneously achieve controllable return loss (RL), bandwidth (BW) and transmission zeros (TZs), and the simple strategy for this type of filter design is proposed. The DB-BPF consists of two high-flexibility DM-RLRs with separated electric and magnetic coupling (SEMC). Specifically, the proposed DM-RLR provides the DB-BPF with center frequency control as well as RL control, and SEMC is utilized for the BW and TZ control. To facilitate the des

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8

Dujpen, Thanakorn, Chadarat Khwunnak, Samran Lertkonsarn, and Sarayut Thitapars. "The development of a fully balanced active-RC low-pass filter." EUREKA: Physics and Engineering, no. 2 (March 28, 2025): 113–20. https://doi.org/10.21303/2461-4262.2025.003728.

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This research presents the comprehensive development and analysis of a fully balanced active-RC low-pass filter, specifically designed to deliver high efficiency, tunability, and precision in signal processing applications. The filter architecture comprises four bipolar junction transistors (BJTs) as active elements, connected to two resistors (RL and Ree) and one capacitor as passive components, ensuring a robust configuration. This balanced design facilitates the generation of high-resolution and stable signals, with circuit performance closely aligning with simulation results obtained using

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Kong, Lingteng, Thomas Bligh Scott, John Charles Clifford Day, and David Andrew Megson-Smith. "Long-Range Imaging of Alpha Emitters Using Radioluminescence in Open Environments: Daytime and Night-Time Applications." Sensors 24, no. 16 (2024): 5345. http://dx.doi.org/10.3390/s24165345.

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Alpha emitters like plutonium pose severe health risks when ingested, damaging DNA and potentially causing cancer. Traditional detection methods require proximity within millimeters of the contamination source, presenting safety risks and operational inefficiencies. Long-range detection through alpha radioluminescence (RL) offers a promising alternative. However, most of the previous experiments have been carried out under controlled conditions that preclude the overwhelming effect of ambient light. This study demonstrates the successful detection of a 3 MBq alpha emitter in an open environmen

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10

Saleem, Mohamed Muftah. "New Method to Harmonic Isolation Based on High Selectivity Filter to Control of Shunt Active Filter with Experimental Validation Using DSPACE System." Applied Mechanics and Materials 666 (October 2014): 53–58. http://dx.doi.org/10.4028/www.scientific.net/amm.666.53.

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This paper presents a new control method of a parallel active power filters based on improved harmonic isolation with hardware implementation. The harmonic isolator is based on High Selectivity Filters (it can be tuned at any frequency) and the current control technique consists in a modulated hysteresis current controller. This active filter is intended for harmonic compensation of a diode rectifier feeding a RL load. The study of the active filter control is divided in two parts. The first part deals with the harmonic isolator which generates the harmonic reference currents and is implemente

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11

Haseeb, Zainab. "Application of VDVTA as Grounded Lossy Series and Parallel RL Circuit." Transactions on Machine Learning and Artificial Intelligence 13, no. 02 (2025): 195–203. https://doi.org/10.14738/tmlai.1302.18693.

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This paper presents two simple topologies of novel grounded lossy series and parallel RL circuit employing VDVTA. Inductor and resistor are simulated employing one VDVTA and one passive component. Both the proposed topologies for the immittance simulation have been realized using a simple circuit. There is little deviation in the values of theoretically calculated and practically simulated series and parallel RL circuit. To study the performance of the realized grounded lossy series and parallel RL circuit, a second order high pass filter has been constructed using one of the circuits. To veri

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Thitapars, Sarayut, Chadarat Khwunnak, Samran Lertkonsarn, and Thanakorn Dujpen. "The development of a fully balanced active-RC high-pass filter." EUREKA: Physics and Engineering, no. 1 (January 31, 2025): 84–92. https://doi.org/10.21303/2461-4262.2025.003645.

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This article presents the development and analysis of a fully balanced active-RC high-pass filter employing bipolar junction transistors (BJTs) as the active components. The filter design utilizes NPN transistors, along with resistors (RL and Ree), a capacitor (C), and two sets of biasing circuits (If) to control the transistors. The circuit architecture consists of four NPN transistors, four resistors, and a capacitor arranged symmetrically to handle differential signals effectively. The differential input voltage (VAB) is applied to the base terminals of transistors T3 and T4, while the diff

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Cheng, Haixiu, Yingxin Luo, Ling Zhang, and Zhiwen Liao. "A Reinforcement Learning-Based Traffic Engineering Algorithm for Enterprise Network Backbone Links." Electronics 13, no. 8 (2024): 1441. http://dx.doi.org/10.3390/electronics13081441.

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Large enterprise networks typically rely on expensive, high-speed backbone links to connect multiple campuses across diverse regions. As the volume of traffic traversing these backbone links increases, traffic engineering techniques are employed to filter or redirect traffic flows. Nevertheless, simple rerouting strategies can introduce business disruptions such as packet reordering, which significantly impact the user experience. To address this issue, we introduce an enhanced traffic scheduling algorithm named Critical Flow Rerouting with Weight- Reinforcement Learning(CFRW-RL), which builds

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Liao, Weijian, Zongzhang Zhang, and Yang Yu. "Policy-Independent Behavioral Metric-Based Representation for Deep Reinforcement Learning." Proceedings of the AAAI Conference on Artificial Intelligence 37, no. 7 (2023): 8746–54. http://dx.doi.org/10.1609/aaai.v37i7.26052.

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Behavioral metrics can calculate the distance between states or state-action pairs from the rewards and transitions difference. By virtue of their capability to filter out task-irrelevant information in theory, using them to shape a state embedding space becomes a new trend of representation learning for deep reinforcement learning (RL), especially when there are explicit distracting factors in observation backgrounds. However, due to the tight coupling between the metric and the RL policy, such metric-based methods may result in less informative embedding spaces which can weaken their aid to

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15

Lin, Xingbin, Deyu Yuan, and Xifei Li. "Reinforcement Learning with Dual Safety Policies for Energy Savings in Building Energy Systems." Buildings 13, no. 3 (2023): 580. http://dx.doi.org/10.3390/buildings13030580.

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Reinforcement learning (RL) is being gradually applied in the control of heating, ventilation and air-conditioning (HVAC) systems to learn the optimal control sequences for energy savings. However, due to the “trial and error” issue, the output sequences of RL may cause potential operational safety issues when RL is applied in real systems. To solve those problems, an RL algorithm with dual safety policies for energy savings in HVAC systems is proposed. In the proposed dual safety policies, the implicit safety policy is a part of the RL model, which integrates safety into the optimization targ

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Yu, Weihua, Lidi Zhang, Songzhuo Liu, Gang Gao, Hong Peng, and Xin Lv. "Design of High-Precision Terahertz Filter Based on Directional Optimization Correction Method." Electronics 12, no. 8 (2023): 1878. http://dx.doi.org/10.3390/electronics12081878.

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The directional optimization correction (DOC) method is proposed to reduce the performance error between desired and fabricated terahertz (THz) devices. Three 340 GHz terahertz filters with a bandwidth of 20 GHz are designed and fabricated. The traditional global optimization correction (GOC) method and the proposed DOC method are used to optimize and reduce the performance error, respectively. It is garnered that the center frequency error and bandwidth error of the fabricated terahertz filter optimized by the GOC method are reduced to 3.5 GHz (~1.03%) and 2.2 GHz (~11%), respectively. Meanwh

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17

Gao, Xile, Haiyong Luo, Bokun Ning, et al. "RL-AKF: An Adaptive Kalman Filter Navigation Algorithm Based on Reinforcement Learning for Ground Vehicles." Remote Sensing 12, no. 11 (2020): 1704. http://dx.doi.org/10.3390/rs12111704.

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Kalman filter is a commonly used method in the Global Navigation Satellite System (GNSS)/Inertial Navigation System (INS) integrated navigation system, in which the process noise covariance matrix has a significant influence on the positioning accuracy and sometimes even causes the filter to diverge when using the process noise covariance matrix with large errors. Though many studies have been done on process noise covariance estimation, the ability of the existing methods to adapt to dynamic and complex environments is still weak. To obtain accurate and robust localization results under vario

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18

Oh, Tae-Ho, Ji-Seok Han, Young-Seok Kim, Dae-Young Yang, Sang-Hoon Lee, and Dong-Il “Dan” Cho. "Deep RL Based Notch Filter Design Method for Complex Industrial Servo Systems." International Journal of Control, Automation and Systems 18, no. 12 (2020): 2983–92. http://dx.doi.org/10.1007/s12555-020-0153-y.

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19

Fernand Koffi, K., Agoua Raoule, Diety Landry, Georges Loum, and Olivier Asseu. "NEW METHOD OF SIZING A FILTER (RL-C) FOR AN INVERTER WITH SPWM CONTROL IN MEDIUM VOLTAGE ALTERNATING." International Journal of Advanced Research 9, no. 04 (2021): 34–43. http://dx.doi.org/10.21474/ijar01/12654.

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The need to use SPWM controlled voltage inverters in MV, led us to examine how to filter alternative signals with filters (L-C) and (RL-C). This allowed us to decide on the use of certain formulas for calculating the elements of these filters. Likewise, we have proposed a method of calculating the resistance R by mathematical iterations without using the quality factor Q, in order to obtain a low error rate between the RMS values and the fundamental effective values and THDs respecting the standard 519 IEEE - 2014. The results of these studies obtained using the MATLAB-SIMULINK software are pr

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20

Chaaira, Aymen, Habib Kraiem, Rabiaa Gamoudi, and Lassaad Sbita. "Comparative Analysis of Bipolar and Unipolar SPWM Techniques in PIC-Based Pure Sine Wave Single-Phase Inverters." Engineering, Technology & Applied Science Research 14, no. 3 (2024): 14395–401. http://dx.doi.org/10.48084/etasr.7150.

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This paper provides a comparative analysis of bipolar versus unipolar Sinusoidal Pulse Width Modulation (SPWM) in DC-AC inverters, focusing on Total Harmonic Distortion (THD) across modulation indices and the latter’s effects on the R-L loads. Using the PIC18F2431 microcontroller for its efficiency, a single-phase inverter accomplished to deliver a high-fidelity sine wave. This study discovered that while both SPWM methods reduce harmonics, the unipolar approach yields more uniform THD reduction and superior performance, particularly noticeable in RL load conditions, where minimal harmonic dis

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Gu, Yuhang, Shanshan Xue, Wenzhong Sun, Taiyang Xie, Xiaolong Wang, and Chun-Ping Chen. "A Reconfigurable Single-/Dual-Bandstop Filter with Controllable Equal-Ripple Performance." Applied Sciences 14, no. 13 (2024): 5837. http://dx.doi.org/10.3390/app14135837.

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Bandstop filters (BSFs) have many applications in suppressing interference signals and shielding specific bands. Among them, reconfigurable BSFs that cover more frequency bands by switching modes have great research value. In this paper, a novel synthesis approach for compact reconfigurable BSFs with controllable equal-ripple performance is proposed. By switching the ON/OFF state of the positive intrinsic negative (PIN) diode, the proposed reconfigurable BSF can be switched between single-BSF (S-BSF) and dual-BSF (D-BSF). Based on the synthesis approach, the equal-ripple levels of stopband and

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22

Wolf, Marina. "Overinterpretation or appropriation?" Institutionalization of science and the scientific community 1, no. 2020.1.1 (2020): 58–68. http://dx.doi.org/10.47850/rl.2020.1.1.58-68.

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The article discusses various approaches to interpretation, which understand it as a universal method of the humanities. Particular attention we paid to the interpretations in U. Eco and E. Batti, who, although do not agree with each other, however, are opposed both to the philosophic or analytic understanding of interpretation, which we call the appropriationist approach. The way of interpreting the past inherent in appropriationism often threatens with overinterpretation, for which it is criticized by adepts of contextualism. We analyze the interpretation through the prism of three skeptical

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23

Yazdanian, Mehrdad, and Ali Mehrizi-Sani. "Internal Model-Based Current Control of the RL Filter-Based Voltage-Sourced Converter." IEEE Transactions on Energy Conversion 29, no. 4 (2014): 873–81. http://dx.doi.org/10.1109/tec.2014.2353035.

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Akintade, S. A., Y. Jibril, and A. S. Abubakar. "Development of Shunt Active Power Filter for Harmonic Reduction using Synchronous Reference Frame with Space Vector Pulse Width Modulation." Nigerian Journal of Technological Development 17, no. 2 (2020): 104–12. http://dx.doi.org/10.4314/njtd.v17i2.5.

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The work aims at development of Shunt Active Power Filter (SAPF) for harmonic reduction. The current harmonics are being caused by nonlinear characteristic of power electronics based equipments which increase power losses and in turn reduce power quality. Synchronous Reference Frame (SRF) was used as a control strategy and for reference harmonic current generation and Space Vector Pulse Width Modulation (SVPWM) was adopted as switching signal generation. With RL load under balanced input voltage condition, the developed SAPF-SVPWM achieved a reduction of THD of 0.91% as compared to 25.60 befor

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Nicola, Marcel, Claudiu-Ionel Nicola, Dumitru Sacerdoțianu, and Adrian Vintilă. "Comparative Performance of UPQC Control System Based on PI-GWO, Fractional Order Controllers, and Reinforcement Learning Agent." Electronics 12, no. 3 (2023): 494. http://dx.doi.org/10.3390/electronics12030494.

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In this paper, based on a benchmark on the performance of a Unified Power Quality Conditioner (UPQC), the improvement of this performance is presented comparatively by using Proportional Integrator (PI)-type controllers optimized by a Grey Wolf Optimization (GWO) computational intelligence method, fractional order (FO)-type controllers based on differential and integral fractional calculus, and a PI-type controller in tandem with a Reinforcement Learning—Twin-Delayed Deep Deterministic Policy Gradient (RL-TD3) agent. The main components of the UPQC are a series active filter and an Active Para

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Jin, Zengwang, Menglu Ma, Shuting Zhang, Yanyan Hu, Yanning Zhang, and Changyin Sun. "Secure State Estimation of Cyber-Physical System under Cyber Attacks: Q-Learning vs. SARSA." Electronics 11, no. 19 (2022): 3161. http://dx.doi.org/10.3390/electronics11193161.

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This paper proposes a reinforcement learning (RL) algorithm for the security problem of state estimation of cyber-physical system (CPS) under denial-of-service (DoS) attacks. The security of CPS will inevitably decline when faced with malicious cyber attacks. In order to analyze the impact of cyber attacks on CPS performance, a Kalman filter, as an adaptive state estimation technology, is combined with an RL method to evaluate the issue of system security, where estimation performance is adopted as an evaluation criterion. Then, the transition of estimation error covariance under a DoS attack

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Nagarajappa, Champa Patanegere, and Abhay Anandarao Deshpande. "Multilevel inverter: harmonic analysis with and without filters for RL load using SPWM techniques." Indonesian Journal of Electrical Engineering and Computer Science 34, no. 2 (2024): 756. http://dx.doi.org/10.11591/ijeecs.v34.i2.pp756-767.

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Multilevel inverter (MLI) gains more attraction compared to conventional inverter as it generates a staircase output voltage that mimics sine waves of desired output voltage. Cascaded H-bridge (CHB) topology is taken into consideration owing to several benefits over conventional inverters. Various levels of CHB (3 and 5 level) inverters are compared on diverse parameters. In this paper level shift sinusoidal pulse width modulation technique is considered resulting in reduced lower order harmonic (LOH) distortion and improve the quality of output current and voltage depending on the load. Since

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Nagarajappa, Champa Patanegere, and Abhay Anandarao Deshpande. "Multilevel inverter: harmonic analysis with and without filters for RL load using SPWM techniques." Indonesian Journal of Electrical Engineering and Computer Science 34, no. 2 (2024): 756–67. https://doi.org/10.11591/ijeecs.v34.i2.pp756-767.

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Multilevel inverter (MLI) gains more attraction compared to conventional inverter as it generates a staircase output voltage that mimics sine waves of desired output voltage. Cascaded H-bridge (CHB) topology is taken into consideration owing to several benefits over conventional inverters. Various levels of CHB (3 and 5 level) inverters are compared on diverse parameters. In this paper level shift sinusoidal pulse width modulation technique is considered resulting in reduced lower order harmonic (LOH) distortion and improve the quality of output current and voltage depending on the load. Since

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29

Máximo-Gutierrez, Clara, Juan Hinojosa, José Abad-López, Antonio Urbina-Yeregui, and Alejandro Alvarez-Melcon. "Compact Wideband Groove Gap Waveguide Bandpass Filters Manufactured with 3D Printing and CNC Milling Techniques." Sensors 23, no. 13 (2023): 6234. http://dx.doi.org/10.3390/s23136234.

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This paper presents for the first time a compact wideband bandpass filter in groove gap waveguide (GGW) technology. The structure is obtained by including metallic pins along the central part of the GGW bottom plate according to an n-order Chebyshev stepped impedance synthesis method. The bandpass response is achieved by combining the high-pass characteristic of the GGW and the low-pass behavior of the metallic pins, which act as impedance inverters. This simple structure together with the rigorous design technique allows for a reduction in the manufacturing complexity for the realization of h

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Liu, Qiu, Shen, et al. "Additive Manufacturing of Monolithic Microwave Dielectric Ceramic Filters via Digital Light Processing." Electronics 8, no. 10 (2019): 1067. http://dx.doi.org/10.3390/electronics8101067.

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Microwave dielectric ceramics are employed in filters as electromagnetic wave propagation media. Based on additive manufacturing (AM) techniques, microwave dielectric ceramic filters with complex and precise structures can be fabricated to satisfy filtering requirements. Digital light processing (DLP) is a promising AM technique that is capable of producing filters with high accuracy and efficiency. In this paper, monolithic filters made from Al2O3 and TiO2, with a molar ratio of9:1 (0.9 Al2O3-0.1 TiO2), were fabricated by DLP. The difference in the dielectric properties between the as-sintere

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Ruffo, Riccardo, Paolo Guglielmi, and Eric Armando. "Inverter Side RL Filter Precise Design for Motor Overvoltage Mitigation in SiC-Based Drives." IEEE Transactions on Industrial Electronics 67, no. 2 (2020): 863–73. http://dx.doi.org/10.1109/tie.2019.2898623.

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Kumar, Ashwani, A. K. Verma, and Nainu P. Chaudhari. "DESIGN OF BESSEL LOW PASS FILTER USING DGS WITH IMPROVED CHARACTERISTICS FOR RF/MICROWAVE APPLICATIONS." Journal of Circuits, Systems and Computers 23, no. 09 (2014): 1450122. http://dx.doi.org/10.1142/s0218126614501229.

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We report a synthesis process to design the defected ground structure (DGS)-based Bessel lowpass filter (LPF). For 5-pole LPF at fc = 2.5 GHz, its selectivity is 10.6 dB/GHz and for the DGS-based Butterworth LPF it is 12.6 dB/GHz. For the lumped elements Bessel LPF, it is only 4.84 dB/GHz. Its 20 dB rejection bandwidth is 13.1 GHz and impedance matching BW is 76%, as against 88.8% for Butterworth LPF. At fc = 7.5 GHz, the 5-pole DGS Bessel LPF has selectivity 7 dB/GHz, 20 dB rejection BW is 13 GHz and 10 dB return loss (RL) BW in passband is 4.86 GHz (64.8%) with less than 7.9 pS group delay (

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Mokrani, Bilal, Renaud Bastaits, Mihaita Horodinca, et al. "Parallel Piezoelectric Shunt Damping of Rotationally Periodic Structures." Advances in Materials Science and Engineering 2015 (2015): 1–12. http://dx.doi.org/10.1155/2015/162782.

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This paper considers the RL shunt damping of rotationally periodic structures with an array of regularly spaced piezoelectric patches. The technique is targeted to the damping of a specific mode withnnodal diameters. For this particular case, one can take advantage of the shape of the targeted mode to organize the piezoelectric patches as a modal filter (in parallel loops) which reduces the demand on the inductors of the tuned inductive shunt. In the case of a perfectly rotationally periodic structure, it is possible to organize 4npiezoelectric transducers (PZT patches) in two parallel loops o

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Varshney, Sonal, Lalit Kumar, Umesh K. Dwivedi, and Pradeep Narayan. "A Study on Radiation Level at the Treatment Plane Due to Induced Activity in Linear Accelerator Head." Journal of Medical Physics 49, no. 3 (2024): 480–86. http://dx.doi.org/10.4103/jmp.jmp_16_24.

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Background: The induced activity is produced in the target, monitor chamber, flattening filter (FF), collimating jaws, etc., when a high-energy photon beam is utilized for radiation therapy. This may result in add-on exposure to radiation professionals. Objective: This study aims to measure the radiation level (RL) at the treatment plane due to induced activity in the linear accelerator head. Materials and Methods: In this study, RLs were measured close to the isocenter (I), LINAC head (H), and 0.5 m lateral to the isocenter (L) inside the radiation bunker. The RLs were measured for field size

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Denisenko, K. I., V. O. Lesyk, and T. V. Mysak. "INFLUENCE OF THE FILTER IN THE CONTROL CHANNEL CONTOURS OF THE STORAGE CAPACITOR VOLTAGE STABILIZATION ON THE DYNAMICS IN THREE-PHASE SHUNT ACTIVE POWER FILTER." Praci Institutu elektrodinamiki Nacionalanoi akademii nauk Ukraini 2021, no. 58 (2021): 55–65. http://dx.doi.org/10.15407/publishing2021.58.055.

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The object of research is a three-phase shunt active power filter, which consists of a semiconductor voltage inverter on fully controllable switches, capacitive storage, and an RL-link. The carried-out decomposition of the research object according to the rate of motion of the dynamic system makes it possible to divide this dynamic system into two subsystems, interconnected by control. The role and influence of the communication subsystem between the voltage stabilization circuit on the storage capacitor of the three-phase shunt active power filter and the circuits for the formation of the com

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Kumar, A. Siva, and N. B. Muthu Selvan. "Reduction of Source Current Harmonics in R and Rl Load with Active Filter at Source End." Asian Journal of Research in Social Sciences and Humanities 6, no. 10 (2016): 298. http://dx.doi.org/10.5958/2249-7315.2016.01015.7.

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Sun, Chenglu, Shuo Shen, Wenzhi Tao, Deyi Xue, and Zixia Zhou. "Noise-Resilient Symbolic Regression with Dynamic Gating Reinforcement Learning." Proceedings of the AAAI Conference on Artificial Intelligence 39, no. 19 (2025): 20690–98. https://doi.org/10.1609/aaai.v39i19.34280.

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Symbolic regression (SR) has emerged as a pivotal technique for uncovering the intrinsic information within data and enhancing the interpretability of AI models. However, current state-of-the-art (sota) SR methods struggle to perform correct recovery of symbolic expressions from high-noise data. To address this issue, we introduce a novel noise-resilient SR (NRSR) method capable of recovering expressions from high-noise data. Our method leverages a novel reinforcement learning (RL) approach in conjunction with a designed noise-resilient gating module (NGM) to learn symbolic selection policies.

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Marino, Francesco, and Giorgio Guglieri. "Beyond Static Obstacles: Integrating Kalman Filter with Reinforcement Learning for Drone Navigation." Aerospace 11, no. 5 (2024): 395. http://dx.doi.org/10.3390/aerospace11050395.

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Autonomous drones offer immense potential in dynamic environments, but their navigation systems often struggle with moving obstacles. This paper presents a novel approach for drone trajectory planning in such scenarios, combining the Interactive Multiple Model (IMM) Kalman filter with Proximal Policy Optimization (PPO) reinforcement learning (RL). The IMM Kalman filter addresses state estimation challenges by modeling the potential motion patterns of moving objects. This enables accurate prediction of future object positions, even in uncertain environments. The PPO reinforcement learning algor

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Volkmann, Caroline. "Art. 17 Urh-RL und die Upload-Filter: verschärfte Störerhaftung oder das Ende der Freiheit im Internet?" Computer und Recht 35, no. 6 (2019): 376–84. http://dx.doi.org/10.9785/cr-2019-350612.

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Aslami, Pooja, Tara Aryal, Astha Rai, et al. "Power System Frequency Dynamics Modeling, State Estimation, and Control using Neural Ordinary Differential Equations (NODEs) and Soft Actor-Critic (SAC) Machine Learning Approaches." ACM SIGAPP Applied Computing Review 24, no. 1 (2024): 24–39. http://dx.doi.org/10.1145/3663652.3663655.

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With the global energy transition of the electric power system, grid control, supervision, and protection is becoming more challenging. With the increasing integration of renewable energy sources (RES), the system dynamics are changing, causing traditional power system dynamic modeling with swing equation-based modeling approaches to fail. Additionally, the converter-dominated power grid is decreasing the system inertia, making the power system more fragile to the frequency swings. This paper first investigates and compares the application of a model-based Kalman filter state estimation approa

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Mysak, T. V. "STABILITY ANALYSIS OF THE VOLTAGE STABILIZATION SYSTEM ON THE STORAGE CAPACITOR OF THE THREE-PHASE SHUNT ACTIVE FILTER." Tekhnichna Elektrodynamika 2023, no. 1 (2023): 12–17. http://dx.doi.org/10.15407/techned2023.01.012.

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The object of the study is a three-phase shunt active power filter, which consists of a two-level voltage inverter, a capacitive storage device and a damping RL-link. Decomposition of the object of study according to the rate of motion of a dynamic system makes it possible to divide this system into two subsystems, interconnected by control. The influence of the dynamic characteristics of the low-pass filter, which acts as a subsystem of communication between the voltage stabilization circuit on the capacitor of the three-phase shunt active power filter and the circuits of compensating current

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Belliardo, Federico, Fabio Zoratti, Florian Marquardt, and Vittorio Giovannetti. "Model-aware reinforcement learning for high-performance Bayesian experimental design in quantum metrology." Quantum 8 (December 10, 2024): 1555. https://doi.org/10.22331/q-2024-12-10-1555.

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Quantum sensors offer control flexibility during estimation by allowing manipulation by the experimenter across various parameters. For each sensing platform, pinpointing the optimal controls to enhance the sensor&apos;s precision remains a challenging task. While an analytical solution might be out of reach, machine learning offers a promising avenue for many systems of interest, especially given the capabilities of contemporary hardware. We have introduced a versatile procedure capable of optimizing a wide range of problems in quantum metrology, estimation, and hypothesis testing by comb

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Minh Ly Duc and Dong Phan Tan. "Single Phase Harmonic Mitigation Using Particle Swarm Optimization in Shunt Adaptive Power Filter." international journal of engineering technology and management sciences 7, no. 5 (2023): 239–47. http://dx.doi.org/10.46647/ijetms.2023.v07i05.028.

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Purpose – These load sources are the main cause of generating harmonics, generating power loss in the transmission system and electrical equipment system, as well as reducing the life of electrical equipment, reducing the accuracy of electrical measuring devices, and reducing the signal transmission of communication devices. Methodology/Approach – This study applies the Particle swarm optimization (PSO) algorithm to DC-link capacitor voltage control based on the Proportional-integral (PI) control algorithm to determine the reference current. MATLAB/Simulation 2019a is used to simulate research

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Cheng, Yi, Junjie Su, Chunbo Xiu, and Jiaxin Liu. "Adaptive Clutter Intelligent Suppression Method Based on Deep Reinforcement Learning." Applied Sciences 14, no. 17 (2024): 7843. http://dx.doi.org/10.3390/app14177843.

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In the complex clutter background, the clutter center frequency is not fixed, and the spectral width is wide, which leads to the performance degradation of the traditional adaptive clutter suppression method. Therefore, an adaptive clutter intelligent suppression method based on deep reinforcement learning (DRL) is proposed. Each range cell to be detected is regarded as an independent intelligence (agent) in the proposed method. The clutter environment is interactively learned using a deep learning (DL) process, and the filter parameter optimization is positively motivated by the reinforcement

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Eddine, Ameur Taki, Aissa Ameur, and Benalia Atallah. "RNA Identification Technique and RST Control of a Hybrid Indirect Matrix Converter with a Flying Capacitor Three Level Inverter in Power Active Filtering Application." Journal Européen des Systèmes Automatisés 54, no. 5 (2021): 743–49. http://dx.doi.org/10.18280/jesa.540509.

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The present paper deals with RST controller using implementation of neural architectures to control power electronics systems dedicated to power quality improvement in a distribution grid. We present a technique for designing a robust RST controller, The computation of the controller is used to enhance the control a Hybrid Indirect Matrix Converter with a flying capacitor three level inverter (HIMC) coupled to the power grid (PG) by an RL filter, the synthesizing of this RST controller is formulated through open and close loop. Artificial neuronal network (ANN) identification technique is used

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Verma, Atul Kumar, Indu Saini, and Barjinder Singh Saini. "The baseline wandering noise removal from ECG signal using forward–backward Riemann Liouville fractional integral-based empirical wavelet transform approach." International Journal of Wavelets, Multiresolution and Information Processing 16, no. 06 (2018): 1850049. http://dx.doi.org/10.1142/s0219691318500492.

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The electrocardiogram (ECG) non-invasively monitors the electrical activities of the heart to diagnose the heart-related diseases. The baseline wandering noise affects the diagnosis of the heart diseases. In this paper, the baseline wandering noise removal is done using forward–backward Riemann Liouville (RL) fractional integral-based empirical wavelet transform (EWT) approach. In the designed methodology, firstly, the noisy ECG signal is decomposed into various modes from low to high frequencies. Then, the first mode is processed to remove the baseline wandering noise. The processed EWT mode

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Yang, Jui-An, and Chung-Hsien Kuo. "Integrating Vehicle Positioning and Path Tracking Practices for an Autonomous Vehicle Prototype in Campus Environment." Electronics 10, no. 21 (2021): 2703. http://dx.doi.org/10.3390/electronics10212703.

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This paper presents the implementation of an autonomous electric vehicle (EV) project in the National Taiwan University of Science and Technology (NTUST) campus in Taiwan. The aim of this work was to integrate two important practices of realizing an autonomous vehicle in a campus environment, including vehicle positioning and path tracking. Such a project is helpful to the students to learn and practice key technologies of autonomous vehicles conveniently. Therefore, a laboratory-made EV was equipped with real-time kinematic GPS (RTK-GPS) to provide centimeter position accuracy. Furthermore, t

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Huang, Jianfeng, Guoqiang Lu, Yi Li, and Jiajun Wu. "Q-Sorting: An Algorithm for Reinforcement Learning Problems with Multiple Cumulative Constraints." Mathematics 12, no. 13 (2024): 2001. http://dx.doi.org/10.3390/math12132001.

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This paper proposes a method and an algorithm called Q-sorting for reinforcement learning (RL) problems with multiple cumulative constraints. The primary contribution is a mechanism for dynamically determining the focus of optimization among multiple cumulative constraints and the objective. Executed actions are picked through a procedure with two steps: first filter out actions potentially breaking the constraints, and second sort the remaining ones according to the Q values of the focus in descending order. The algorithm was originally developed upon the classic tabular value representation

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Xu, Xinmeng, Weiping Tu, and Yuhong Yang. "Selector-Enhancer: Learning Dynamic Selection of Local and Non-local Attention Operation for Speech Enhancement." Proceedings of the AAAI Conference on Artificial Intelligence 37, no. 11 (2023): 13853–60. http://dx.doi.org/10.1609/aaai.v37i11.26622.

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Attention mechanisms, such as local and non-local attention, play a fundamental role in recent deep learning based speech enhancement (SE) systems. However, a natural speech contains many fast-changing and relatively briefly acoustic events, therefore, capturing the most informative speech features by indiscriminately using local and non-local attention is challenged. We observe that the noise type and speech feature vary within a sequence of speech and the local and non-local can respectively process different types of corrupted speech regions. To leverage this, we propose Selector-Enhancer,

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Wang, Seunghun, Jinseok Park, and Songcheol Hong. "A K-Band Variable-Gain Phase Shifter Based on Gilbert-Cell Vector Synthesizer With RC–RL Poly-Phase Filter." IEEE Microwave and Wireless Components Letters 31, no. 4 (2021): 393–96. http://dx.doi.org/10.1109/lmwc.2021.3056881.

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