Article
Acoustics
Hongzhi Zhu, Fanglong Weng, Makeximu, Donghai Li, Min Zhu
Summary: This research aims to develop a novel method for the active control of combustion oscillation based on active disturbance rejection control (ADRC). The effectiveness of parameter tuning and the controller in suppressing combustion oscillation was studied by simulation and experiments. The experimental results show that the first-order ADRC performs better than the proportional-integral-derivative (PID) controller, while the second-order ADRC exhibits a better pressure-suppression effect and smaller controller output voltage.
JOURNAL OF SOUND AND VIBRATION
(2022)
Article
Engineering, Mechanical
Feng Pan, Junlin Luo, Wei Wu
Summary: Electromagnetic active suspension is an important technique utilized in vehicles to enhance ride comfort and handling stability. This study introduces an active suspension controller based on the active disturbance rejection control (ADRC) method, and experimental results demonstrate its superior performance compared to the traditional PID controller. The results indicate significant reduction in overshoot and adjustment time, as well as decreased vertical displacement of the vehicle body, with the use of the ADRC controller.
Article
Automation & Control Systems
Sen Chen, Zhixiang Chen
Summary: This article presents an active disturbance rejection control design for nonlinear uncertain systems with measurement uncertainty, aiming to capture the total effect of multiple uncertainties to achieve control. The highly consistent transient performance of tracking is theoretically revealed, along with the qualitative relationship between tracking error and controller parameters. Simulation and experimental results support the effectiveness of the proposed method.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2021)
Article
Chemistry, Physical
Alicia Li Jen Keow, Amy Mayhall, Marzia Cescon, Zheng Chen
Summary: This study presents a control system to determine the appropriate mass flow rate of hydrogen produced by a water electrolyzer for maintaining gaseous hydrogen pressure. Both PI and ADRC controllers can reject disturbances, with ADRC excelling in eliminating disturbances produced by the mass flow rate.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Automation & Control Systems
Zhenlong Wu, Gengjin Shi, Donghai Li, Yanhong Liu, YangQuan Chen
Summary: This paper studies the design of active disturbance rejection control (ADRC) for high-order integral systems and proves the necessary condition for ADRC. The advantages of ADRC over proportional-integral-derivative (PID) controller are theoretically analyzed. A practical design procedure for ADRC is summarized using the single variable method, and comparative simulations and experiments are conducted to verify its performance.
Article
Automation & Control Systems
Sihang Li, Jinhui Zhang, Kai Zhao, Yakai Zhang, Zhongqi Sun, Yuanqing Xia
Summary: A novel variable gain active disturbance rejection control (ADRC) approach is developed for the trajectory tracking control of a four-mecanum-wheel mobile vehicle in this article. The proposed approach includes variable gain tracking-differentiator (VGTD), variable gain extended state observer (VGESO), and composite disturbance rejection controller. Error-based variable gains are incorporated in VGTD, VGESO, and controller to improve transient performances.
INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL
(2022)
Article
Agronomy
Xin Ji, Aichen Wang, Xinhua Wei
Summary: The paper investigates the use of a flow control valve and a linear active disturbance controller (LADRC) to control spraying quantity, with experimental results showing the method can significantly suppress disturbances during practical operation. Compared to traditional PID controllers, the proposed controller demonstrates improved response speed and steady-state error accuracy.
Article
Physics, Multidisciplinary
Jianjian Zhao, Tao Zhao, Nian Liu
Summary: A novel fractional-order active disturbance rejection control with fuzzy self-tuning method is proposed for a photoelectric tracking system (PTS) in this paper, which can enhance the flexibility and adaptability of the controller, ensure the stability of the control system, and outperform the traditional methods in terms of response speed, overshoot, and disturbance suppression capability in numerical comparative simulations.
Article
Engineering, Aerospace
Dongmei Han, Chuanjun Li, Zhongjiao Shi
Summary: In this paper, an attitude autopilot based on F-LADRC is proposed to address the multi-source uncertainty disturbance problem during flight control. The design includes a second-order linear active disturbance rejection controller to stabilize the attitude angle of the missiles, and the use of fuzzy control for adaptive parameter adjustment to enhance system performance.
Article
Automation & Control Systems
Huixia Zhang, Yan Liang, Haiyan Cheng
Summary: This paper presents a convergence analysis for a tracking differentiator of an active disturbance rejection control method. The convergence proof processes are divided into three situations based on the nonlinear piecewise function used in the tracking differentiator. It is proved that the tracking errors of the tracking differentiator are uniformly ultimately bounded and the relationships between the upper bounds of tracking errors and adjustment parameters are established. Simulation and experiment results demonstrate the effectiveness of the proposed convergence analysis.
Article
Automation & Control Systems
Zhuo-Yun Nie, Zhaoyang Li, Qing-Guo Wang, Zhiqiang Gao, Jiliang Luo
Summary: This study demonstrates the integration of the Ziegler-Nichols tuning method into the framework of active disturbance rejection, leading to a unified tuning approach applicable to a wide range of industrial processes. This new method allows practitioners to understand and validate the tuning process using their own language of bandwidth and phase characteristics, with extensive simulation results provided to illustrate its effectiveness.
INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL
(2022)
Article
Engineering, Aerospace
Ke Lu, Hongyuan Tian, Pan Zhen, Senkui Lu, Renliang Chen
Summary: This paper proposes an active disturbance rejection controller for tiltrotor aircraft conversion flight. The controller is designed to handle model uncertainties and external disturbance via estimation, and its effectiveness is demonstrated through simulations.
Article
Engineering, Environmental
Shaojie Liu, Huanpao Huang, Donghai Li, Bin Tian, Wenchao Xue, Li Sun, Min Zhu
Summary: This paper proposes a hybrid bi-level control method for the safety control of superheated steam temperature in a power plant boiler. The method combines active disturbance rejection control and receding horizon optimization to effectively control and optimize the steam temperature. Experimental results show improvements in disturbance rejection and tracking performance.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Computer Science, Information Systems
Sen Chen, Zhixiang Chen, Yi Huang, Zhi-Liang Zhao
Summary: The paper presents a new approach to the control problem of uncertain nonlinear systems, utilizing an extended state observer to estimate control input uncertainty and achieve ideal input tracking, investigating transient performance under various nonlinear uncertainties. The theoretical results demonstrate the effectiveness of the proposed design in controlling tracking and estimation errors despite the presence of uncertainties.
SCIENCE CHINA-INFORMATION SCIENCES
(2022)
Article
Automation & Control Systems
Haiyan Wang, Tianhong Pan, Hebertt Sira-Ramirez, Zhiqiang Gao
Summary: This paper proposes a discrete active disturbance rejection control (DADRC) scheme for manipulating linear input-output systems with zero dynamics, designed to track a reference signal and cancel uncertainties and disturbances. The paper also presents a parameter tuning method based on model information, and demonstrates the robustness and effectiveness of the scheme through numerical simulations.
INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL
(2021)
Article
Instruments & Instrumentation
Jinlu Ruan, Liang Chen, Pengxiao Xu, Yapeng Zhang, Xue Du, Hongqiao Yin, Shiyi He, Fangbao Wang, Xun Zhang, Xiaoping Ouyang
Summary: A new SiC detector with a faster time response was developed to improve the temporal response of SiC-HPMTs. The improved SiC-HPMT showed significantly enhanced temporal response compared to the previous SiC-HPMT, and it can accurately measure the time information of fast pulsed radiation fields.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2024)
Article
Instruments & Instrumentation
Kevin Nash
Summary: This article discusses the need for extensive upgrades of the LHC detectors, particularly the Outer Tracker, due to the demanding conditions and radiation of the High Luminosity LHC scenario. The design choices, technological approaches, and R&D activities for the Outer Tracker Phase-2 upgrade are highlighted.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2024)
Article
Instruments & Instrumentation
S. A. Wotton
Summary: The hadron particle identification provided by LHCb's RICH system is crucial for the success of the experiment, and it will continue to play a significant role in Upgrade II. To maintain the current excellent particle identification performance, substantial improvements in the precision of measuring the space and time coordinates of detected photons in the RICH and in the resolution of the reconstructed Cherenkov angle are required.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2024)
Article
Instruments & Instrumentation
R. Cardarelli, A. Rocchi, G. Aielli, P. Camarri, A. Di Ciaccio, L. Di Stante, B. Liberti, E. Pastori, L. Pizzimento, G. Proto
Summary: The Resistive Cylindrical Chamber (RCC) is a new generation of gaseous particle detectors that overcome the limitations of Resistive Plate Chambers (RPC) and expand their application range. By transitioning from planar to cylindrical geometry, while maintaining an almost planar electric field, the RCC achieves improved detection efficiency, increased gas pressure, and the possibility of using eco-friendly gases.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2024)
Article
Instruments & Instrumentation
Giacomo Volpe
Summary: The ALICE collaboration is proposing a new apparatus, ALICE 3, to investigate the Quark Gluon Plasma (QGP) properties. In this context, conceptual studies for the development of a RICH detector for ALICE 3 are ongoing. The proposed baseline layout is a proximity-focusing RICH, using aerogel as Cherenkov radiator and Silicon Photomultipliers for photon detection. The detector specifications and performance obtained by Monte Carlo simulation are presented, along with the R&D challenges related to the design.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2024)
Article
Instruments & Instrumentation
M. G. Mazarakis, E. Jongewaard, J. Ellsworth
Summary: This report presents experimental data and a step-by-step technique for evaluating the work functions of thermionic cathodes. The experiments were conducted using small-sized thermionic cathodes provided by Spectra-Mat corporation. The cathode electron current emission work function is emphasized as a crucial parameter for selecting cathodes in various applications.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2024)
Article
Instruments & Instrumentation
M. Loyd, A. Khaplanov, V. Sedov, J. Beal, T. Visscher, C. Donahue, C. Montcalm, G. Warren, R. Butz, C. Boone, C. Hart, R. Riedel, Y. Diawara
Summary: Thermal and cold neutron beamlines require detector systems with high efficiency, large active area, and good spatial resolution. This study presents a new design of Anger camera using silicon photomultipliers (SiPMs) instead of photomultiplier tubes (PMTs), offering better resolution, less distortion, and more compactness. The use of SiPMs also enables the camera to be used in strong magnetic fields, providing additional experimental capabilities.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2024)
Article
Instruments & Instrumentation
Thomas Neulinger, Hanno Filter, Oliver Zimmer
Summary: This paper describes the mathematical foundation for analyzing vertical time-of-flight (TOF) measurements using ultracold neutrons (UCN). It enables the spectroscopy of UCN with kinetic energies below the neutron optical potential of the detector entrance window. The paper provides general treatment methods and transformation rules for converting vertical TOF spectra into other spectra of interest.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2024)
Article
Instruments & Instrumentation
Huynh Dinh Chuong, Nguyen Huynh Duy Khang, Le Thi Ngoc Trang, Nguyen Thi Truc Linh, Truong Thanh Sang, Nguyen Thanh Dat, Hoang Duc Tam
Summary: This paper presents a comparative study of three models, including virtual point detector (VPD), curve fitting (CF), and machine learning (ML), in determining the full-energy peak efficiency (FEPE) of HPGe detector. The study found that the ML model outperforms VPD and CF models in terms of accuracy.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2024)
Article
Instruments & Instrumentation
M. H. Kushoro, M. Angelone, D. Bozzi, G. Gorini, F. La Via, E. Perelli Cippo, M. Pillon, M. Tardocchi, M. Rebai
Summary: This paper presents the characterization of a series of SiC detectors operated with partial polarization, achieving excellent energy resolution and detection characteristics for both alpha particles and neutrons. The results demonstrate the potential of SiC detectors for fast neutron detection in fusion experiments. The limitations and challenges for manufacturing thick SiCs in the future are also discussed.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2024)
Article
Instruments & Instrumentation
Deb Sankar Bhattacharya, Andrea Bressan, Chandradoy Chatterjee, Silvia Dalla Torre, Mauro Gregori, Alexander Kiselev, Stefano Levorato, Anna Martin, Saverio Minutoli, Mikhail Osipenko, Richa Rai, Marco Ripani, Fulvio Tessarotto, Triloki Triloki
Summary: In this article, we report on the measurement of the time resolution of an LAPPD prototype using Cherenkov radiation emitted by high energy hadrons. Our approach has demonstrated the capability of measuring time resolutions as fine as 25-30 ps. The measured time resolution for single photoelectrons is about 80 ps r.m.s.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2024)
Article
Instruments & Instrumentation
Bharti Rohila, S. R. Abhilash, Diwanshu, Chetan Sharma, Devinder Mehta, Ashok Kumar
Summary: Self-supporting and Au backed Ag-107 targets have been fabricated using a combination of cold rolling and e-beam melting technique. The method is efficient, resulting in targets without significant material loss or major contamination. Various techniques have been used for thickness measurements and characterizations, and one of the fabricated targets has been successfully used in a nuclear physics experiment.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2024)
Article
Instruments & Instrumentation
B. Kronheim, A. Belloni, T. K. Edberg, S. C. Eno, C. Howe, C. Palmer, C. Papageorgakis, M. Paranjpe, S. Sriram
Summary: This paper presents measurements of the relative decrease of light output during irradiation of small plastic scintillator tiles read out by silicon photomultipliers. The study found substantial temporary damage during low-temperature irradiation, regardless of oxygen concentration and wrapping material. The wrapping material had an impact on the relative light loss, with the 3M(TM) Enhanced Specular Reflector Film showing the largest loss. The light loss was less at warmer temperatures and similar to that in standard atmosphere with 3% oxygen concentration. Evidence of a plateau in the radical density was seen for the data at 0 degrees C.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2024)
Article
Instruments & Instrumentation
V. V. Haurylavets, V. K. Ivanov, A. V. Korol, A. V. Solov'yov
Summary: Computational modeling of high-energy electron passage through crystalline media is conducted using relativistic molecular dynamics. The results show good agreement with experimental data, demonstrating the accuracy of the simulations. Minor discrepancies between theory and experiment are discussed.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2024)
Article
Instruments & Instrumentation
Luca Quaglia, R. Cardarelli, B. Liberti, E. Pastori, G. Proto, L. Pizzimento, A. Rocchi, G. Aielli, P. Camarri, A. Di Ciacco, L. Di Stante, R. Santonico, D. Boscherini, A. Bruni, L. Massa, A. Polini, M. Romano, L. Benussi, S. Bianco, D. Piccolo, G. Saviano, M. Abbrescia, L. Congedo, M. De Serio, G. Galati, G. Pugliese, S. Simone, D. Ramos, P. Salvini, A. Samalan, M. Tytgat, N. Zaganidis, J. Eysermans, A. Ferretti, M. Gagliardi, L. Terlizzi, E. Vercellin, P. Dupieux, B. Joly, S. P. Manen, R. Guida, B. Mandelli, G. Rigoletti, M. Barroso, M. C. Arena, A. Pastore, R. Aly, M. Verzeroli, S. Buontempo
Summary: Resistive Plate Chamber detectors are widely used in current High Energy Physics experiments. However, efforts are being made to find eco-friendly gas alternatives to Tetrafluoroethane. The RPC EcoGas@GIF++ collaboration aims to improve RPC technology, evaluate the performance of RPCs with eco-friendly gas mixtures, and conduct aging tests.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2024)
