Article
Physics, Fluids & Plasmas
G. Schlisio, U. Wenzel, D. Naujoks, T. S. Pedersen, H. Grote, V. R. Winters, H. Niemann, M. Mulsow, M. Krychowiak, P. Drewelow, Y. Gao, M. Jakubowski, A. Puig Sitjes, H. Laqua, J. Knauer, K. J. Brunner
Summary: The study highlights the importance of investigating fuel retention in fusion experiments for plasma density control and tritium inventory in future fusion reactors. The gas balance of the Wendelstein 7-X stellarator with its inertially cooled graphite divertor reveals the significant and dynamic role of the wall in absorbing or releasing particles under different plasma conditions. Various scenarios are presented to assess the impact of fueling and heating on the wall inventory, with the findings showing that successful longer plasma experiments require prior shorter ones.
Article
Multidisciplinary Sciences
H. Han, S. J. Park, C. Sung, J. Kang, Y. H. Lee, J. Chung, T. S. Hahm, B. Kim, J-K Park, J. G. Bak, M. S. Cha, G. J. Choi, M. J. Choi, J. Gwak, S. H. Hahn, J. Jang, K. C. Lee, J. H. Kim, S. K. Kim, W. C. Kim, J. Ko, W. H. Ko, C. Y. Lee, J. H. Lee, J. K. Lee, J. P. Lee, K. D. Lee, Y. S. Park, J. Seo, S. M. Yang, S. W. Yoon, Y-S Na
Summary: Nuclear fusion is a promising alternative energy source, but there are still many scientific challenges to harnessing fusion energy on a large scale. Researchers have achieved a plasma fusion regime at the Korea Superconducting Tokamak Advanced Research facility that meets most of the requirements for sustainable fusion. By stabilizing core plasma turbulence with abundant fast ions, they were able to generate plasma at a temperature of 100 million kelvin, lasting up to 20 seconds without instabilities or impurity accumulation. This regime, characterized by low plasma density and moderate input power, shows promise for reliable and disruption-free sustained operation, making it a potential path towards commercial fusion reactors.
Article
Multidisciplinary Sciences
A. B. Zylstra, O. A. Hurricane, D. A. Callahan, A. L. Kritcher, J. E. Ralph, H. F. Robey, J. S. Ross, C. V. Young, K. L. Baker, D. T. Casey, T. Doppner, L. Divol, M. Hohenberger, S. Le Pape, A. Pak, P. K. Patel, R. Tommasini, S. J. Ali, P. A. Amendt, L. J. Atherton, B. Bachmann, D. Bailey, L. R. Benedetti, L. Berzak Hopkins, R. Betti, S. D. Bhandarkar, J. Biener, R. M. Bionta, N. W. Birge, E. J. Bond, D. K. Bradley, T. Braun, T. M. Briggs, M. W. Bruhn, P. M. Celliers, B. Chang, T. Chapman, H. Chen, C. Choate, A. R. Christopherson, D. S. Clark, J. W. Crippen, E. L. Dewald, T. R. Dittrich, M. J. Edwards, W. A. Farmer, J. E. Field, D. Fittinghoff, J. Frenje, J. Gaffney, M. Gatu Johnson, S. H. Glenzer, G. P. Grim, S. Haan, K. D. Hahn, G. N. Hall, B. A. Hammel, J. Harte, E. Hartouni, J. E. Heebner, V. J. Hernandez, H. Herrmann, M. C. Herrmann, D. E. Hinkel, D. D. Ho, J. P. Holder, W. W. Hsing, H. Huang, K. D. Humbird, N. Izumi, L. C. Jarrott, J. Jeet, O. Jones, G. D. Kerbel, S. M. Kerr, S. F. Khan, J. Kilkenny, Y. Kim, H. Geppert Kleinrath, V. Geppert Kleinrath, C. Kong, J. M. Koning, J. J. Kroll, M. K. G. Kruse, B. Kustowski, O. L. Landen, S. Langer, D. Larson, N. C. Lemos, J. D. Lindl, T. Ma, M. J. MacDonald, B. J. MacGowan, A. J. Mackinnon, S. A. MacLaren, A. G. MacPhee, M. M. Marinak, D. A. Mariscal, E. V. Marley, L. Masse, K. Meaney, N. B. Meezan, P. A. Michel, M. Millot, J. L. Milovich, J. D. Moody, A. S. Moore, J. W. Morton, T. Murphy, K. Newman, J. -M. G. Di Nicola, A. Nikroo, R. Nora, M. V. Patel, L. J. Pelz, J. L. Peterson, Y. Ping, B. B. Pollock, M. Ratledge, N. G. Rice, H. Rinderknecht, M. Rosen, M. S. Rubery, J. D. Salmonson, J. Sater, S. Schiaffino, D. J. Schlossberg, M. B. Schneider, C. R. Schroeder, H. A. Scott, S. M. Sepke, K. Sequoia, M. W. Sherlock, S. Shin, V. A. Smalyuk, B. K. Spears, P. T. Springer, M. Stadermann, S. Stoupin, D. J. Strozzi, L. J. Suter, C. A. Thomas, R. P. J. Town, E. R. Tubman, P. L. Volegov, C. R. Weber, K. Widmann, C. Wild, C. H. Wilde, B. M. Van Wonterghem, D. T. Woods, B. N. Woodworth, M. Yamaguchi, S. T. Yang, G. B. Zimmerman
Summary: A burning-plasma state has been achieved in the laboratory using a laser facility to generate X-rays and compress and heat a fuel-containing capsule. Experiments show fusion self-heating exceeding the mechanical work input, and a subset of experiments appear to have crossed the static self-heating boundary, providing an opportunity to study α-particle-dominated plasmas and burning-plasma physics.
Article
Physics, Fluids & Plasmas
S. Ya. Bronin, E. V. Vikhrov, B. B. Zelener, B. V. Zelener
Summary: In this study, the expansion of ultracold Sr plasma in a quadrupole magnetic field was simulated using molecular dynamics. An analysis of plasma evolution influenced by the magnetic field was provided. The behavior of plasma confinement time under varying magnetic field strength was estimated. The study established the similarity between the time dependence of ion concentration and velocity distribution and the parameters of the plasma and magnetic field. The simulation results agreed with the experimental ones.
Article
Physics, Fluids & Plasmas
E. Sanchez, J. L. Velasco, I. Calvo, S. Mulas
Summary: A new quasi-isodynamic (QI) stellarator configuration optimized for the confinement of energetic ions at low plasma beta is obtained using the numerical optimization method. The new configuration shows good confinement of fast ions at low beta and becomes excellent at reactor values. A set of filamentary coils that preserve the good confinement of fast ions in the core is also presented.
Article
Engineering, Electrical & Electronic
Jin-Su Hong, Sangwon Lee, Jung-Ik Ha
Summary: This article presents a magnetic manipulation system for medical applications, which utilizes minimum infinity-norm current reference control to address the issues of asymmetrical current references and excessive current ratings, leading to an improved magnetic field synthesis.
IEEE TRANSACTIONS ON MAGNETICS
(2022)
Article
Multidisciplinary Sciences
Bogdan Teaca, Christopher C. T. Pringle, Oliver J. J. Smith, Ben. F. F. McMillan
Summary: The self-organization of structures in a tokamak plasma during an H-mode transition has properties similar to simpler shear flow configurations. Recent dynamical studies on plasma shear flows are described, including tracking the edge of chaos, computing the minimal seed for turbulence, finding the attractor solution, and understanding the stability of period orbits in the turbulent basin of attraction. A modus operandi developed for simpler configurations can be adapted to understand the H-mode transition. This article is part of a discussion meeting on H-mode transition and pedestal studies in fusion plasmas.
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2023)
Article
Physics, Fluids & Plasmas
K. C. Shaing, M. S. Chu, Y-K M. Peng
Summary: It has been found that the width of trapped particles like bananas in tokamaks is reduced due to magnetic squeezing, leading to a decrease in ion heat conductivity.
Editorial Material
Multidisciplinary Sciences
Baonian Wan, Guosheng Xu
Summary: Advancements in tokamak physics and technology over the past 20 years have paved the way for magnetic confinement fusion research to move towards a steady-state burning plasma.
NATIONAL SCIENCE REVIEW
(2023)
Article
Physics, Fluids & Plasmas
J. A. Alonso, O. P. Ford, L. Vano, S. Akaslompolo, S. Buller, R. McDermott, H. M. Smith, J. Baldzuhn, C. D. Beidler, M. Beurskens, S. Bozhenkov, K. J. Brunner, I Calvo, D. Carralero, A. Dinklage, T. Estrada, G. Fuchert, J. Geiger, J. Knauer, A. Langenberg, N. A. Pablant, E. Pasch, P. Zs Poloskei, J. L. Velasco, T. Windisch
Summary: The article analyzes velocity measurements obtained with a spectroscopy system to infer the distribution of electric field and carbon ion velocity in a plasma. The experimental results agree with neoclassical expectations, but quantitative differences are observed in some conditions.
Article
Physics, Fluids & Plasmas
Matteo Del Prete, Giovanni Montani
Summary: In this study, the influence of toroidal plasma rotation on tokamak equilibrium quantities was investigated through analytical solutions based on different representations. The introduction of toroidal rotation resulted in variations of relevant plasma quantities, particularly enhancing the poloidal beta. By using polynomial and Bessel function expressions, different plasma scenarios were reproduced with a focus on the shape of the separatrix and the compatibility of configurations with plasma velocity values.
PLASMA PHYSICS AND CONTROLLED FUSION
(2021)
Article
Optics
Zai-Xin Wang, Xue-Qiang Gou, Fang-Ping Wang, Heng Zhang, Sheng Zhang, Wen-Shan Duan
Summary: This paper investigates the loss rate of ion beams and non-neutral plasma in an axisymmetric magnetic mirror. It is found that the loss rate increases as the mass of ions increases, and the behavior differs when the electron number density is less than or much larger than the ion number density.
EUROPEAN PHYSICAL JOURNAL D
(2022)
Article
Physics, Fluids & Plasmas
Anton V. Sudnikov, Ivan A. Ivanov, Anna A. Inzhevatkina, Mikhail V. Larichkin, Konstantin A. Lomov, Vladimir V. Postupaev, Mikhail S. Tolkachev, Viktor O. Ustyuzhanin
Summary: The paper presents experimental results from the SMOLA device, which is the first facility with a helical mirror section of the magnetic system. The experiments demonstrated the effectiveness of the helical mirror in suppressing axial plasma flow and pinching plasma density to the axis, providing good agreement with theoretical predictions.
JOURNAL OF PLASMA PHYSICS
(2022)
Article
Physics, Fluids & Plasmas
Zhichen Feng, Guodong Yu, Peiyou Jiang, GuoYong Fu
Summary: A new linked mirror device for magnetic confinement experiments has been proposed, consisting of two straight magnetic mirrors connected by two half-torus. The device eliminates the usual loss cone of traditional linear mirror machines, leading to improved particle confinement efficiency. The calculated neoclassical confinement is very good and even superior to that of an equivalent tokamak.
Article
Nuclear Science & Technology
Remy Nouailletas, Philippe Moreau, Benjamin Santraine, Julian Colnel, C. Reux, Y. Moudden, S. Darche, N. Amiot
Summary: This paper presents the current status and significant upgrades of the WEST Plasma Control System (PCS) to improve machine performance. The upgrades include increasing the operation domain, controlling plasma density, and coordinating heating systems. Real-time machine protection strategies are also implemented for the fully actively cooled metallic machine.
FUSION ENGINEERING AND DESIGN
(2023)
Article
Chemistry, Multidisciplinary
Carmine Stefano Clemente, Immacolato Iannone, Vincenzo Paolo Loschiavo, Daniele Davino
Summary: Magnetostrictive alloys have the potential to be used in Vibration Energy Harvesting applications for supplying power to Wireless Sensor Network (WSN) and Internet of Things (IoT) devices due to their intrinsic robustness. However, the exploitation of the low voltage output from vibration energy sources, compared to electronic standards, requires a Power Electronic Interface (PEI) to convert the AC input to DC output over a wide range of frequencies and amplitudes. Unlike other smart materials like piezoelectrics, there are very few or no conversion techniques available for magnetostrictive devices. An improved AC-DC boost converter that utilizes the active harvester coil as a storage element without the need for additional passive inductors seems promising for this purpose.
APPLIED SCIENCES-BASEL
(2023)
Article
Energy & Fuels
Pietro Arena, Gaetano Bongiovi, Ilenia Catanzaro, Cristiano Ciurluini, Aldo Collaku, Alessandro Del Nevo, Pietro Alessandro Di Maio, Matteo D'Onorio, Fabio Giannetti, Vito Imbriani, Pietro Maccari, Lorenzo Melchiorri, Fabio Moro, Rocco Mozzillo, Simone Noce, Laura Savoldi, Simone Siriano, Alessandro Tassone, Marco Utili
Summary: This paper presents the architecture and design of the water-cooled lead lithium breeding blanket (WCLL BB), focusing on the differences between the pre-conceptual version and the conceptual layout. It also describes the interfaces between the BB and various in-vessel systems.
Article
Engineering, Multidisciplinary
A. Dal Molin, M. Nocente, M. Dalla Rosa, E. Panontin, D. Rigamonti, M. Tardocchi, A. Shevelev, E. Khilkevitch, M. Iliasova, L. Giacomelli, G. Gorini, E. Perelli Cippo, F. D'Isa, G. Pautasso, G. Papp, G. Tardini, E. Macusova, J. Cerovsky, O. Ficker, M. Salewski, V Kiptily
Summary: A novel hard x-ray (HXR) spectrometer, called runaway electron gamma-ray detection system, has been developed for measuring bremsstrahlung radiation from runaway electrons in fusion plasmas. The system consists of a 1'x1' LaBr3:Ce scintillator crystal and a photomultiplier tube, providing an energy dynamic range exceeding 20 MeV and an energy resolution of 3% at 661.7 keV. The detector gain remains stable even under severe loads, with a gain shift below 3% at HXR counting rates over 1 MCps. The system's outstanding performance allows unprecedented studies of the time-dependent runaway electron energy distribution function in recent experiments.
MEASUREMENT SCIENCE AND TECHNOLOGY
(2023)
Article
Physics, Fluids & Plasmas
O. Myatra, D. Moulton, B. Dudson, B. Lipschultz, S. Newton, K. Verhaegh, A. Fil
Summary: This study investigated the role of ion-molecule (D+ - D-2) elastic collisions in strongly detached divertor conditions. Two steady state solutions were compared: one obtained through a main-ion fuelling scan and the other through a nitrogen seeding scan. The results showed significant differences in electron-ion recombination levels between the two solutions.
Article
Physics, Fluids & Plasmas
K. Verhaegh, A. C. Williams, D. Moulton, B. Lipschultz, B. P. Duval, O. Fevrier, A. Fil, J. Harrison, N. Osborne, H. Reimerdes, C. Theiler
Summary: Plasma-molecular interactions generate molecular ions that react with the plasma, contributing to detachment through molecular activated recombination (MAR) and molecular activated dissociation (MAD), which create excited atoms. Experimental studies have observed hydrogen emission from these atoms in detached plasmas. However, simulations were in disagreement with experimental findings, suggesting an underestimation of molecular charge exchange rate for deuterium. New simulations were performed to investigate the impact of disabling ion isotope mass rescaling. The findings showed improved agreement between experiment and simulations in terms of spectroscopic measurements, ion source/sink inferences, and ion target flux roll-over.
Article
Physics, Fluids & Plasmas
Chenguang Wan, Zhi Yu, Alessandro Pau, Olivier Sauter, Xiaojuan Liu, Qiping Yuan, Jiangang Li
Summary: Tokamaks use magnetic fields to confine fusion plasma. Predicting/reconstructing the last closed-flux surface (LCFS) is a major challenge in controlling the magnetic configuration. The interaction between the actuator coils and the tokamak plasma determines the evolution of the LCFS over time. This study applies a state-of-the-art machine learning model to LCFS reconstruction in the EAST tokamak, achieving high accuracy in real-time modeling tests.
Article
Physics, Multidisciplinary
Ansh Patel, Santosh P. Pandya, Alexander E. Shevelev, E. M. Khilkevitch, Margarita Iliasova, Richard O'Connor, Raphael Tieulent, Robin Barnsley, Alexander N. Mokeev
Summary: Hard x-ray spectrometry in ITER is used to study the energy distribution of Runaway Electrons (REs) in tokamak plasmas. A reconstruction technique is developed to analyze the convoluted diagnostic signals caused by bremsstrahlung radiation and detector response. Synthetic HXR spectra are generated from forward modeling with bremsstrahlung emission spectra and detector response function, and then used to reconstruct the Runaway Electron energy distribution function (REDF). The effect of reduced optical transmission efficiency and the minimum number of photon counts required for optimal reconstruction are investigated.
Article
Physics, Fluids & Plasmas
V Korzueva, E. Kaveeva, E. Vekshina, V Rozhansky, I Senichenkov, A. Shirobokov, D. Coster
Summary: SOLPS-ITER modeling was used to simulate the EU-DEMO tokamak burning plasma with Ar seeding, taking into account drifts, kinetic neutrals, and current. The simulation showed that the combination of parameters, including a power of 200 MW, a deuterium puff of 1.5 x 10(23) at s(-1), and Ar seeding rates of 8.0x10(19) at s(-1) and 1.5x10(20) at s(-1), could achieve power loads lower than 5 MW m(-2) on both divertor targets. However, the temperature above 5 eV in the far scrape-off layer (SOL) of the outer target remains a challenge. The study also discussed the impurity accumulation mechanism in the high-field-side SOL.
PLASMA PHYSICS AND CONTROLLED FUSION
(2023)
Article
Chemistry, Analytical
Raul Luis, Yohanes Nietiadi, Antonio Quercia, Alberto Vale, Jorge Belo, Antonio Silva, Bruno Goncalves, Artur Malaquias, Andrei Gusarov, Federico Caruggi, Enrico Perelli Cippo, Maryna Chernyshova, Barbara Bienkowska, Wolfgang Biel
Summary: One of the main challenges in developing a plasma diagnostic and control system for DEMO is dealing with the unprecedented radiation levels in a tokamak during long operation periods. Different integration approaches have been proposed for the required diagnostics in DEMO, which will be exposed to varying radiation levels depending on their location. This paper provides an overview of the expected radiation environment and presents neutronics simulations for different diagnostic designs.
Article
Materials Science, Multidisciplinary
Guanying Wei, Jesper Byggmastar, Junzhi Cui, Kai Nordlund, Jingli Ren, Flyura Djurabekova
Summary: This study investigates the effect of lattice parameter difference and mass difference on primary radiation damage in W-Ta and W-Mo alloys through atomistic simulations. The results show that the available interatomic potential and Gaussian approximation potential yield different predictions, but the trend of alloy composition on surviving defects is similar in W-Mo alloys, while it differs significantly in W-Ta alloys.
JOURNAL OF NUCLEAR MATERIALS
(2023)
Article
Physics, Multidisciplinary
R. Albanese, A. Alexandrov, F. Alicante, A. Anokhina, T. Asada, C. Battilana, A. Bay, C. Betancourt, R. Biswas, A. Blanco Castro, M. Bogomilov, D. Bonacorsi, W. M. Bonivento, P. Bordalo, A. Boyarsky, S. Buontempo, M. Campanelli, T. Camporesi, V. Canale, A. Castro, D. Centanni, F. Cerutti, M. Chernyavskiy, K. -y. Choi, S. Cholak, F. Cindolo, M. Climescu, A. P. Conaboy, G. M. Dallavalle, D. Davino, P. T. de Bryas, G. De Lellis, M. De Magistris, A. De Roeck, A. De Rujula, M. De Serio, D. De Simone, A. Di Crescenzo, R. Dona, O. Durhan, F. Fabbri, F. Fedotovs, M. Ferrillo, M. Ferro-Luzzi, R. A. Fini, A. Fiorillo, R. Fresa, W. Funk, F. M. Garay Walls, A. Golovatiuk, A. Golutvin, E. Graverini, A. M. Guler, V Guliaeva, G. J. Haefeli, J. C. Helo Herrera, E. van Herwijnen, P. Iengo, S. Ilieva, A. Infantino, A. Iuliano, R. Jacobsson, C. Kamiscioglu, A. M. Kauniskangas, E. Khalikov, S. H. Kim, Y. G. Kim, G. Klioutchnikov, M. Komatsu, N. Konovalova, S. Kovalenko, S. Kuleshov, H. M. Lacker, O. Lantwin, F. Lasagni Manghi, A. Lauria, K. Y. Lee, K. S. Lee, S. Lo Meo, V. P. Loschiavo, S. Marcellini, A. Margiotta, A. Mascellani, A. Miano, A. Mikulenko, M. C. Montesi, F. L. Navarria, S. Ogawa, N. Okateva, M. Ovchynnikov, G. Paggi, B. D. Park, A. Pastore, A. Perrotta, D. Podgrudkov, N. Polukhina, A. Prota, A. Quercia, S. Ramos, A. Reghunath, T. Roganova, F. Ronchetti, T. Rovelli, O. Ruchayskiy, T. Ruf, M. Sabate Gilarte, M. Samoilov, V. Scalera, O. Schneider, G. Sekhniaidze, N. Serra, M. Shaposhnikov, V. Shevchenko, T. Shchedrina, L. Shchutska, H. Shibuya, S. Simone, G. P. Siroli, G. Sirri, G. Soares, O. J. Soto Sandoval, M. Spurio, N. Starkov, I. Timiryasov, V. Tioukov, F. Tramontano, C. Trippl, E. Ursov, A. Ustyuzhanin, G. Vankova-Kirilova, V. Verguilov, N. Viegas Guerreiro Leonardo, C. Vilela, C. Visone, R. Wanke, E. Yaman, C. Yazici, C. S. Yoon, E. Zaffaroni, J. Zamora Saa
Summary: This study reports the direct observation of muon neutrino interactions with the SND@LHC detector at the Large Hadron Collider. Using data from proton-proton collisions collected by SND@LHC in 2022, the study shows a significant evidence of muon neutrino signals.
PHYSICAL REVIEW LETTERS
(2023)
Article
Physics, Fluids & Plasmas
I Balboa, E. Rose, G. F. Matthews, D. Croft, M. F. Stamp, S. A. Silburn, J. C. Williams, D. Hepple, A. Huber, S. Whetham, D. Iglesias, D. J. Kinna, M. Beldishevski, J. Figueiredo, C. Perez Von Thun, N. Balshaw, L. D. Horton, R. C. Lobel, I. J. Pearson, K. W. Pepperell, G. Fishpool, B. Lane, K-D Zastrow, G. Arnoux, G. Bodnar, P. Carman, P. Carvalho, N. J. Conway, V Huber, J. Karhunen, G. Kocsis, A. Manzanares, P. Puglia, C. Ruiz de Galarreta, C. Marren, R. Otin, J. Naish, V. K. Thompson, JET Contributors
Summary: This paper presents a remote viewing system located outside the biological shield wall to image the divertor region in JET. It focuses on the optical and mechanical designs of the installation, capable of imaging the divertor over an optical distance of approximately 31 m. The main novel feature is the design in house of two glass reinforced plastic kinematic mounts standing vertically to each accommodate a mirror of 500 mm in diameter.
PLASMA PHYSICS AND CONTROLLED FUSION
(2023)
Article
Nuclear Science & Technology
D. Dellasega, G. Alberti, E. Fortuna-Zalesna, W. Zielinski, A. Pezzoli, S. Moeller, B. Unterberg, M. Passoni, A. Hakola
Summary: Different types of W layers were produced using Pulsed Laser Deposition and exposed to D plasma. The formation of nanostructures and D retention were investigated. The results showed that nanocrystalline W films formed lamellar structures while amorphous W films formed random string-like shapes. A higher oxygen content in the W layer led to straight parallel lines with acute angles in the nanostructures. The presence of a porous structure hindered the formation of surface nanostructures. Nanostructures appeared with a fluence threshold of 3-5 x 1025 D/m2 regardless of the impinging D flux. D retention increased with fluence and was enhanced by the presence of amorphous structure and open morphology. Amorphous W films exhibited higher D retention compared to crystalline W. Porous W favored higher recycling and limited D uptake. The presence of O had little effect on D retention.
NUCLEAR MATERIALS AND ENERGY
(2023)
Article
Automation & Control Systems
Alessandro Borri, Corrado Possieri
Summary: Reinforcement learning is extended to non-deterministic finite transition systems (FTSs) without a probability measure. Controllers maximizing the best-case and worst-case return are built dynamically using RL framework, with the FTS model learned from experience. The proposed approach is successfully applied to symbolic models derived from continuous systems, as demonstrated by numerical results on the mountain car benchmark.
IEEE CONTROL SYSTEMS LETTERS
(2023)
Article
Automation & Control Systems
Laura Menini, Corrado Possieri, Antonio Tornambe
Summary: The aim of this letter is to apply numerical algebraic geometry to address the strong stabilization problem with fixed structure controllers. By using a plant taken from the literature and a dynamic controller with two parameters as a working example, the paper demonstrates how a combination of numerical and symbolic algorithms can be employed to determine the existence of a solution within a defined range of parameters, and to provide a solution when the problem is solvable. The theory is illustrated in detail using the working example, with results also presented for general cases and further tested on four additional benchmark examples.
IEEE CONTROL SYSTEMS LETTERS
(2023)