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We address the problem of state estimation and attack isolation for general discrete-time nonlinear systems when sensors are corrupted by (potentially unbounded) attack signals. For a large class of nonlinear plants and observers, we…

系统与控制 · 计算机科学 2019-04-10 Tianci Yang , Carlos Murguia , Margreta Kuijper , Dragan Nesic

Consider the problem of joint parameter estimation and prediction in a Markov random field: i.e., the model parameters are estimated on the basis of an initial set of data, and then the fitted model is used to perform prediction (e.g.,…

机器学习 · 计算机科学 2007-07-13 Martin J. Wainwright

For additive actuator and sensor faults, we propose a systematic method to design a state-space fault estimation filter directly from Markov parameters identified from fault-free data. We address this problem by parameterizing a…

系统与控制 · 计算机科学 2017-08-31 Yiming Wan , Tamas Keviczky , Michel Verhaegen

This letter proposes a new approach for online detection of low-quality synchrophasor data under both normal and event conditions. The proposed approach utilizes the features of synchrophasor data in time and frequency domains to…

系统与控制 · 电气工程与系统科学 2020-11-26 Wenyun Ju , Horacio Silva-Saravia , Neeraj Nayak , Wenxuan Yao , Yichen Zhang , Qingxin Shi , Fan Ye

Phasor Measurement Units (PMUs) are used in the measurement, control and protection of power grids. However, deploying PMUs at every bus in a power system is prohibitively expensive, necessitating partial PMU placement that can ensure…

系统与控制 · 电气工程与系统科学 2024-04-19 Sajjad Maleki , Subhash Lakshminarayana , E. Veronica Belmega , Carsten Maple

In the linear minimum mean square error (LMMSE) estimation for orthogonal frequency division multiplexing (OFDM) systems, the problem about the determination of the algorithm's parameters, especially those related with channel frequency…

信号处理 · 电气工程与系统科学 2021-07-13 Kai Mei , Jun Liu , Xiaoran Liu , Jun Xiong , Xiaoying Zhang , Jibo Wei

Integrated optical filter based on microring resonators plays a critical role in many applications, ranging from wavelength division multiplexing and switching to channel routing. Bandwidth tunable filters are capable of meeting the…

光学 · 物理学 2022-04-26 Xinda Lu , Nuo Chen , Boqing Zhang , Haofan Yang , Yuntian Chen , Xinliang Zhang , Jing Xu

The increasing deployment of distribution-level phasor measurement units (PMUs) calls for dynamic distribution state estimation (DDSE) approaches that tap into high-rate measurements to maintain a comprehensive view of the…

最优化与控制 · 数学 2020-01-09 Jianhan Song , Emiliano Dall'Anese , Andrea Simonetto , Hao Zhu

This paper investigates a multilevel inverter with a capability that produces a wide voltage range with high quality. The selective harmonic elimination (SHE) method is considered for a single-phase 5-level cascaded H-bridge (CHB) inverter,…

系统与控制 · 电气工程与系统科学 2021-04-21 Milad Sadoughi , Amirhossein Pourdadashnia , Mohammad Farhadi-Kangarlu , Sadjad Galvani

We propose a new system identification method, called Sign-Perturbed Sums (SPS), for constructing non-asymptotic confidence regions under mild statistical assumptions. SPS is introduced for linear regression models, including but not…

信号处理 · 电气工程与系统科学 2018-07-24 Balázs Cs. Csáji , Marco C. Campi , Erik Weyer

The algorithm of the ensemble pulsar time scale (PT$_{\rm ens}$) based on the optimal Wiener filtration method has been proposed. This algorithm allows the separation of the contributions to the post-fit pulsar timing residuals of the…

天体物理仪器与方法 · 物理学 2011-09-20 Alexander E. Rodin

The Paterson--Stockmeyer method is an evaluation scheme for matrix polynomials with scalar coefficients that arise in many state-of-the-art algorithms based on polynomial or rational approximation, for example, those for computing…

数值分析 · 数学 2024-12-06 Xiaobo Liu

When measuring the value of a function to be minimized is not only expensive but also with noise, the popular simultaneous perturbation stochastic approximation (SPSA) algorithm requires only two function values in each iteration. In this…

最优化与控制 · 数学 2022-03-08 Shiru Li , Yong Xia , Zi Xu

Distribution system state estimation (DSSE) is an essential tool for operation of distribution networks, the results of which enables the operator to have a thorough observation of the system. Thus, most distribution management systems…

系统与控制 · 计算机科学 2015-04-15 Vahid Rasouli Disfani , Mohammad Chehreghani Bozchalui , Ratnesh Sharma

Sign-Perturbed Sum (SPS) is a powerful finite-sample system identification algorithm which can construct confidence regions for the true data generating system with exact coverage probabilities, for any finite sample size. SPS was developed…

机器学习 · 统计学 2024-01-30 Szabolcs Szentpéteri , Balázs Csanád Csáji

The truncated singular value decomposition may be used to find the solution of linear discrete ill-posed problems in conjunction with Tikhonov regularization and requires the estimation of a regularization parameter that balances between…

数值分析 · 数学 2022-08-16 Rosemary A. Renaut , Anthony W. Helmstetter , Saeed Vatankhah

Optimal sensor placement is essential for minimizing costs and ensuring accurate state estimation in power systems. This paper introduces a novel method for optimal sensor placement for dynamic state estimation of power systems modeled by…

系统与控制 · 电气工程与系统科学 2025-02-06 Milos Katanic , Yi Guo , John Lygeros , Gabriela Hug

The reduced-rank method exploits the distortion-variance tradeoff to yield superior solutions for classic problems in statistical signal processing such as parameter estimation and filtering. The central idea is to reduce the variance of…

信息论 · 计算机科学 2019-03-06 K. G. Nagananda , Pramod Khargonekar

This paper proposes an estimation framework to assess the performance of sorting over perturbed/noisy data. In particular, the recovering accuracy is measured in terms of Minimum Mean Square Error (MMSE) between the values of the sorting…

信息论 · 计算机科学 2019-09-04 Alex Dytso , Martina Cardone , H. Vincent Poor

In recent years, the use of multilevel inverter has become popular due to its many advantages. Due to the popularity of multilevel inverters in industries and in applications that require a wide range of voltages, there have been many…

系统与控制 · 电气工程与系统科学 2021-04-27 Amirhossein Pourdadashnia , Milad Sadoughi , Mohammad Farhadi-Kangarlu , Behrouz Tousi