Article
Engineering, Electrical & Electronic
Jingjing He, Zhiyi Guo
Summary: This paper proposes a robust Laplace l(1) square-root cubature Kalman filter (LSCKF) that can effectively handle measurement outliers and maintain high numerical stability.
CIRCUITS SYSTEMS AND SIGNAL PROCESSING
(2022)
Article
Engineering, Mechanical
Jia Ye, Zhifei Zhang, Jie Jin, Ruiqi Su, Bo Huang
Summary: The tire-road friction coefficient is crucial for vehicle safety systems. Existing methods have limited accuracy, while the proposed estimation method improves accuracy by adaptively adjusting tire stiffness and accurately identifies tire damage.
NONLINEAR DYNAMICS
(2023)
Article
Thermodynamics
Lin Chen, Wentao Yu, Guoyang Cheng, Jierui Wang
Summary: This paper focuses on the SOC estimation of lithium batteries using a fractional-order adaptive square-root cubature Kalman filter (FO-ASRCKF). A fractional-order model (FOM) of the battery is established using fractional-order derivative theory. An improved adaptive genetic algorithm is applied for accurate identification of the multi-parameter model. The proposed FO-ASRCKF algorithm based on FOM and adaptive rules outperforms other filters in terms of SOC estimation accuracy and robustness.
Article
Energy & Fuels
Vedik Basetti, Ashwani Kumar Chandel, Chandan Kumar Shiva
Summary: This paper investigates the problem of dynamic state estimation in power systems and proposes a new method based on square-root cubature Kalman filter to improve the performance of estimation. Through testing under various system operating conditions, the results demonstrate the versatility of the proposed method.
SUSTAINABLE ENERGY GRIDS & NETWORKS
(2022)
Article
Engineering, Multidisciplinary
Yang Kang, Zizhen Qiu, Qiming Fan, Hao Zhang, Zhanqun Shi, Fengshou Gu
Summary: This paper proposes a novel estimation method for accurately estimating the time-varying dynamic coefficients (TVDCs) of journal bearings without the need for a tachometer. The method combines a phase-based approach to extract the instantaneous angular speed and an iteration strategy based on the square-root cubature Kalman filter (SRCKF) to estimate the TVDCs in the time domain. Simulation and experimental studies demonstrate the effectiveness of the proposed method in estimating the TVDCs of journal bearings under speed-variable conditions and different levels of measurement noise.
Article
Energy & Fuels
Peng Guo, Wentao Ma, Dele Yi, Xinghua Liu, Xiaofei Wang, Lujuan Dang
Summary: This paper proposes a novel robust state estimation method that enhances the robustness of the square-root cubature Kalman filter by incorporating a mixture correntropy loss. The method overcomes the issue of non-Gaussian measurement noise interference and achieves high estimation accuracy in different cases.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
Qiuyu Ding, Yujie Wang, Zonghai Chen
Summary: This study utilizes reduced-order electrochemical models for parameter identification and real-time state estimation in battery management systems, achieving state estimation through square-root cubature Kalman filter. The results demonstrate high accuracy and reduced computational burden of the reduced-order model.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Automation & Control Systems
Haining Ma, Zhengliang Lu, Xiang Zhang, Wenhe Liao
Summary: This article proposes an improved multiplicative quaternion square root strong tracking CDKF algorithm for attitude estimation of low-cost satellites. The algorithm utilizes the square root of covariance matrices for information propagation, employs multiple fading factors to adjust the square root of the covariance matrix, and conducts multiplication operation on quaternions. The algorithm shows superior performance in terms of attitude estimation accuracy, convergence speed, and robustness to filter divergence and calculation divergence compared to basic CDKF.
INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL
(2022)
Article
Chemistry, Multidisciplinary
Wan Wenkang, Feng Jingan, Song Bao, Li Xinxin
Summary: The study focuses on improving vehicle dynamics control using the IMM-SCKF algorithm and shows that the fusion output results of IMM-SCKF algorithm outperform those of the traditional SCKF algorithm through simulation and validation.
APPLIED SCIENCES-BASEL
(2021)
Article
Mathematics, Applied
Maria Kulikova, Gennady Yu Kulikov
Summary: This paper explores the design of accurate nonlinear Bayesian filters and proposes a numerical method for solving mean and error covariance of dynamic state. The key idea is to use methods with discretization error control to ensure accurate implementation of the filters' moment differential equations. The new method, tested on various application examples including stiff systems, utilizes a numerically stable square-root approach within singular value decomposition for a hybrid filter.
APPLIED NUMERICAL MATHEMATICS
(2022)
Article
Chemistry, Physical
Zili Zhang, Jing Chen, Yawen Mao, Cuicui Liao
Summary: In this paper, a square root cubature Kalman filter based multi-innovation least square (SRCKF-MILS) algorithm is proposed for state of charge (SOC) estimation of batteries. The algorithm utilizes a second-order resistor-capacitor (RC) equivalent circuit model, and employs multi-innovation least square estimation and square root cubature Kalman filter to estimate the battery model parameters and SOC. The strong tracking filtering (STF) theory is introduced to adaptively adjust the gain matrix due to outliers present in the state vector, enhancing the robustness of the algorithm. Simulation examples demonstrate the effectiveness of the proposed algorithms.
Article
Engineering, Mechanical
Chuang Yang, Zhe Gao, Haoyu Chai, Yang Han
Summary: This paper investigates the influence of initial values on nonlinear continuous-time fractional-order systems. It proposes a fractional-order hybrid extended-cubature Kalman filter method to deal with correlated noises and achieve effective state estimation. The effectiveness of the proposed algorithm is verified with two simulation examples.
NONLINEAR DYNAMICS
(2023)
Article
Engineering, Electrical & Electronic
Meghabriti Pramanik, Aurobinda Routray, Pabitra Mitra
Summary: This paper proposes an adaptive algorithm for simultaneous estimation of harmonic/interharmonic characteristics and noise parameters of a signal. The algorithm utilizes a two-stage model, where the first step obtains harmonic frequencies using Root-MUSIC method and the second step employs ASSTSCKF method to obtain signal parameters. Compliance tests were performed in the presence of noise, and the results show that the algorithm achieves high accuracy.
ELECTRIC POWER SYSTEMS RESEARCH
(2022)
Article
Biochemistry & Molecular Biology
Chih-Hsu Huang, Peng-Hsiang Wang, Ming-Shaung Ju, Chou-Ching K. Lin
Summary: In this study, a parameter ratio derived from CSCKF was formulated to quantify the excitability of the neural network and compared with three commonly used indicators. The results showed that CSCKF had the potential to accurately reflect the neural network excitability and quantify the severity of epileptiform discharges in EEG with a preserved DC component.
Article
Chemistry, Multidisciplinary
Pingshu Ge, Ce Zhang, Tao Zhang, Lie Guo, Qingyang Xiang
Summary: This paper proposes a square-root cubature Kalman filter with the maximum correlation entropy criterion (MCSRCKF) to accurately estimate vehicle states under non-Gaussian noise environments. Experimental results demonstrate that MCSRCKF achieves high accuracy and enhanced robustness in real-world scenarios.
APPLIED SCIENCES-BASEL
(2023)
Article
Engineering, Aerospace
A. I. Krikunova, A. D. Cheshko, V. V. Krivets
Summary: Fire safety is crucial for the development of efficient and safe energy systems for space objects. This paper focuses on studying the influence of gravity on combustion processes and analyzes the dynamics of inverted conical methane-air flame under external acoustic excitation. The results show that at high excitation frequencies, the intensity of vortex generation is similar to that observed in experiments with normal gravity, indicating the dominance of acoustic mechanism. Additionally, at an external excitation frequency of 240 Hz, significant growth in shear vortex diameters and increased amplitude of perpendicular oscillations of flame branches were observed, indicating the most intensive large scale instability of flow.
Article
Engineering, Aerospace
Liya Huang, Mingquan Gong, Jiarui Zhang, Kun Liang, He Yang
Summary: Metallized gel propellants with exceptional stability and remarkable shear-thinning properties were successfully synthesized by utilizing cooperative hydrogen bonding between polymer octanoyl cellulose and the small Thixatrol ST molecule.
Article
Engineering, Aerospace
Clemence Poirier, Michelle Hermes, Marco Aliberti
Summary: This paper examines the role of space-based data in European climate policies and assesses the barriers to the use of space technology in climate policymaking in European countries. The research findings indicate that while satellite data is crucial for scientific research and climate policies, the role of space is not accurately reflected in European climate policies.
Article
Engineering, Aerospace
Yan-mei Zhou, Ji-ping Wu, Wei Huang, Gautam Choubey
Summary: This study investigates the combustion performance of sinusoidal pulsed jets in supersonic flows using numerical simulations. It is found that the pulsed jets can significantly improve combustion efficiency.
Article
Engineering, Aerospace
Wang Zhao, Shujun Tan, Yiliang Guo
Summary: This study proposes an adaptive Pogo active suppression controller design method that utilizes measured acceleration as feedback. The eigenspace transformation theory is employed to design dimensional reduced models for observer and adaptive controller, effectively addressing the issues of model parameter uncertainty and time-varying parameters. Simulation analysis of a certain type of rocket demonstrates the effectiveness of the proposed method.
Article
Engineering, Aerospace
A. V. Nebylov, V. A. Nebylov
Summary: This article discusses the safety issues of astronauts during the landing process and investigates how rescuers can effectively carry out rescue missions. The article also takes into account the special maritime conditions of the Vostochny cosmodrome.
Article
Engineering, Aerospace
Pietro Davide Maddio, Rosario Sinatra, Alberto Meschini, Riccardo Rigato, Marco Lapi, Davide Scarozza, Alessandro Cammarata
Summary: This study aims to develop a versatile cable net generation algorithm for designing offset cable nets in parabolic reflectors. The study proposes a methodology that leverages quasi-geodesic curves and introduces two types of these curves. The study also presents various solutions for different cable net layouts and introduces a quality index based on an equilateral triangle cable net.
Article
Engineering, Aerospace
Nahum Melamed, Tom Heinsheimer
Summary: Traditional methods of asteroid trajectory modification rely on impact or nuclear detonation, while centrifugal propulsion offers an alternative approach. The centrifuge system lands on the asteroid and gradually adjusts the trajectory using momentum transfer. This method allows for flexibility in operation parameters and has the potential to be used in planetary defense and other space missions.
Article
Engineering, Aerospace
Andrew Barth, Ou Ma
Summary: As humans continue to explore the surfaces of the Moon and Mars, the use of distributed heterogeneous robot teams can increase the chances of success by utilizing the complementary capabilities and synergy of the team members. Effective cooperation and collaboration between the members of a robot team is crucial, but defining a metric for effective cooperation is challenging. This paper presents a method for determining reward criteria that can be used for training robot swarm through reinforcement learning techniques. The trained robot team exhibits high success rates and cooperative behavior in test environments, demonstrating the robustness and scalability of the training strategies.
Article
Engineering, Aerospace
Kaijie Zhu, Qiquan Quan, Dewei Tang, Yachao Dong, Kaiyi Wang, Bo Tang, Qi Wu, Zongquan Deng
Summary: This study proposes a deployable Mars quadcopter for air patrol and sampling missions. By describing its structure, avionics architecture, and autonomous flight control method, it provides a feasible framework for future Mars flight sampling missions.
Article
Engineering, Aerospace
Avishai Melamed, Adi Rao, Sarah Kreps, Erika Palmer
Article
Engineering, Aerospace
Colin Hunter, Avinkrishnan Vijayachandran, Anthony M. Waas
Summary: Deployable structures inspired by origami have gained significant prominence in space applications. Recent advancements in multi-material additive manufacturing have opened new possibilities for the fabrication of monolithic structures. This paper presents a novel framework for designing deployable structures using viscoelastic hinges incorporated into rigid plates. Experimental results demonstrate the effectiveness and feasibility of these hinge designs in real-world applications.
Article
Engineering, Aerospace
Aleksander V. Efremov, Mikhail S. Tiaglik, Aleksey S. Tiaglik, Iliyas Kh Irgaleev, Tatyana V. Voronka
Summary: Theoretical and experimental studies were conducted to determine the best kind of information presented on a predictive display for the highest accuracy in space mission execution, while considering reduced propellant consumption.
Article
Engineering, Aerospace
Fuwen Liang, Long Miao, Feng Tian, Jiahui Song, Ningfei Wang, Xiao Hou
Summary: This study investigates the influence of deployment friction on the dynamic characteristics of nonconductive space tether through experimental measurement and numerical simulation. The results show that deployment friction significantly limits the uncontrolled tether deployment, while increasing the initial deployment velocity and satellite effective mass, as well as decreasing orbital altitude, can enhance the deployment capability and dynamic stability. In addition, an optimal matching relationship between tether length and satellite total mass is proposed, which is of substantial importance for the design of nonconductive space tether systems.
Article
Engineering, Aerospace
Amirah R. Algethami, Colin R. McInnes, Matteo Ceriotti
Summary: This paper utilizes the Hill's approximation model to manipulate the relative motion of two asteroids by three impulses, resulting in their bound binary motion in Earth's orbit. The feasibility of this strategy is demonstrated, and potential applications for parking small captured near-Earth asteroids in Earth's orbit are discussed.