IEEE Transactions on Circuits and Systems II: Express Briefs最新文献_第9页

The Three-Stage Identification Method of the Sandwich Model With Hysteresis 含滞后夹层模型的三阶段辨识方法

IF 4.9 2区工程技术

IEEE Transactions on Circuits and Systems II: Express Briefs Pub Date : 2025-06-17 DOI: 10.1109/TCSII.2025.3580551

Ya Gu;Haiyan Hou;Yonghong Tan

{"title":"The Three-Stage Identification Method of the Sandwich Model With Hysteresis","authors":"Ya Gu;Haiyan Hou;Yonghong Tan","doi":"10.1109/TCSII.2025.3580551","DOIUrl":"https://doi.org/10.1109/TCSII.2025.3580551","url":null,"abstract":"This brief investigates the identification of sandwich systems exhibiting hysteresis behavior. To address the problem that the filtering effect of the previous-stage subsystem on the input signal results in the filtered excitation input causing insufficient excitation of the subsequent-stage subsystems, thus reducing the identification accuracy, a new robust three-stage identification method is proposed to ensure the sufficient excitation of the entire system and enhance the identification accuracy. The key to this method lies in the staged estimation of subsystem parameters. In each stage, parameter estimation is carried out using the key-item separation principle combined with an iterative process. Then, based on the previously estimated submodel parameters, an inverse model is developed to filter the input excitation signal. Therefore, the insufficient excitation of the subsequent-stage subsystem caused by the filtering effect of the previous-stage subsystem on the input signal is counteracted, enhancing parameter estimation accuracy. Finally, this method is applied to the parameter identification of an electromagnetic micromirror.","PeriodicalId":13101,"journal":{"name":"IEEE Transactions on Circuits and Systems II: Express Briefs","volume":"72 8","pages":"1058-1062"},"PeriodicalIF":4.9,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144750854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

KV-Cache Oriented Query-Aware Sparse Attention Accelerator With Cross-Stage Precision-Configurable Digital CIM 面向KV-Cache的查询感知稀疏注意力加速器与跨阶段精度可配置的数字CIM

IF 4.9 2区工程技术

IEEE Transactions on Circuits and Systems II: Express Briefs Pub Date : 2025-06-17 DOI: 10.1109/TCSII.2025.3580135

Yang Zhang;Xilong Kang;Weixuan Wang;Yizhi Ding;Lizheng Ren;Yiran Zhang;Ruiqi Tan;Zhen Wang;Hao Cai;Bo Liu

引用次数: 0

Efficient Hardware Architecture Design of K-Means Clustering Algorithm for AV1 Palette Mode Coding AV1调色板模式编码中k -均值聚类算法的高效硬件架构设计

IF 4.9 2区工程技术

IEEE Transactions on Circuits and Systems II: Express Briefs Pub Date : 2025-06-17 DOI: 10.1109/TCSII.2025.3580435

Xiaofeng Huang;Jiaqing Lin;Fengguang Liu;Wen Ji;Haibing Yin;Siwei Ma

{"title":"Efficient Hardware Architecture Design of K-Means Clustering Algorithm for AV1 Palette Mode Coding","authors":"Xiaofeng Huang;Jiaqing Lin;Fengguang Liu;Wen Ji;Haibing Yin;Siwei Ma","doi":"10.1109/TCSII.2025.3580435","DOIUrl":"https://doi.org/10.1109/TCSII.2025.3580435","url":null,"abstract":"The palette mode is a specialized coding tool for coding screen content video in Alliance for Open Media Video 1 (AV1), and K-means clustering is a necessary step in the palette mode. However, the high computational complexity and the strong data dependency in K-means clustering impede real-time processing. To address these issues, we propose an efficient hardware architecture design for the K-means clustering algorithm. Firstly, we propose a fully pipelined hardware architecture with two data-interleaving optimization methods, including K-interleaving and block-interleaving. Then, we propose a novel method for reusing original pixel data, which is motivated by the fact that the input original pixels are the same for different coding blocks. Finally, we propose a parallelized architecture that features three “K-means Engine” modules, with reusing of the “Euclidean distance calculate” module to minimize area. Experimental results show that the proposed hardware architecture can process all K-means clustering for pixels in a superblock in 10246 cycles under 650MHz working frequency, which can achieve 4K@30fps real-time processing. To the best of our knowledge, our work is the first attempt to design a K-means clustering hardware accelerator for palette mode in AV1.","PeriodicalId":13101,"journal":{"name":"IEEE Transactions on Circuits and Systems II: Express Briefs","volume":"72 8","pages":"1078-1082"},"PeriodicalIF":4.9,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144750932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Neural Network-Enhanced Digital Background Calibration Algorithm for Residue Amplifier Nonlinearity in Pipelined ADCs 一种针对流水线adc中剩余放大器非线性的神经网络增强数字背景校正算法

IF 4.9 2区工程技术

IEEE Transactions on Circuits and Systems II: Express Briefs Pub Date : 2025-06-16 DOI: 10.1109/TCSII.2025.3580062

Yutao Peng;Ziwei Lai;Hu Wang;Jun Zhang;Dongbing Fu;Yabo Ni;Tao Liu;Zhifei Lu;Xizhu Peng;He Tang

{"title":"A Neural Network-Enhanced Digital Background Calibration Algorithm for Residue Amplifier Nonlinearity in Pipelined ADCs","authors":"Yutao Peng;Ziwei Lai;Hu Wang;Jun Zhang;Dongbing Fu;Yabo Ni;Tao Liu;Zhifei Lu;Xizhu Peng;He Tang","doi":"10.1109/TCSII.2025.3580062","DOIUrl":"https://doi.org/10.1109/TCSII.2025.3580062","url":null,"abstract":"This brief proposes a neural network-enhanced digital background calibration scheme for calibrating the linear and the third-order nonlinear gain errors of the residue amplifier (RA) in pipelined ADCs. A customized convolutional neural network (CNN) is designed to extract the information of the linear and the third-order nonlinear gain errors of RA with dither injection. Compared to traditional correlation-based calibration algorithms, the proposed method can significantly improve convergence speed and robustness against dither capacitor mismatch. Compared with previous neural network-based calibration techniques which are commonly used for foreground calibration, the proposed method can operate in background to follow error variations without any risk of signal fidelity problems. Off-chip validation with a silicon-proven 14-bit 1.3 GS/s pipelined ADC shows that, after calibration, the SNDR and SFDR are improved from 46.6 dB and 55.2 dB to 63.1 dB and 80.4 dB, respectively. Moreover, the proposed method takes only 75K samples to reach convergence, whereas traditional algorithms require several to hundreds of millions of samples to achieve convergence (<inline-formula> <tex-math>$10{^{{2}}} sim 10{^{{4}}}$ </tex-math></inline-formula> times faster). The implementation result shows that the power consumption of the proposed calibrator is 34.8 mW at 1.3 GHz clock frequency.","PeriodicalId":13101,"journal":{"name":"IEEE Transactions on Circuits and Systems II: Express Briefs","volume":"72 8","pages":"1008-1012"},"PeriodicalIF":4.9,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144750869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A 28.4-to-39.2 GHz Low-Power Injection-Locked Frequency Quadrupler With Reconfigurable Pre-Filter-Amplifier 带可重构预滤波器放大器的28.4 ~ 39.2 GHz低功率注入锁频四倍器

IF 4.9 2区工程技术

IEEE Transactions on Circuits and Systems II: Express Briefs Pub Date : 2025-06-13 DOI: 10.1109/TCSII.2025.3579551

Kai Li;Zhipeng Wang;Fanyi Meng;Kaixue Ma;Keping Wang

引用次数: 0

Hybrid Scheduling-Based Asynchronous H∞ Control for Markov Jump Power Systems With Cyber Attacks 网络攻击下马尔可夫跳变电力系统的混合调度异步H∞控制

IF 4.9 2区工程技术

IEEE Transactions on Circuits and Systems II: Express Briefs Pub Date : 2025-06-11 DOI: 10.1109/TCSII.2025.3578663

Yi Lu;Xiru Wu;Yaonan Wang;Rili Wu;Yuhai Zhong;Jiexin Xie

{"title":"Hybrid Scheduling-Based Asynchronous H∞ Control for Markov Jump Power Systems With Cyber Attacks","authors":"Yi Lu;Xiru Wu;Yaonan Wang;Rili Wu;Yuhai Zhong;Jiexin Xie","doi":"10.1109/TCSII.2025.3578663","DOIUrl":"https://doi.org/10.1109/TCSII.2025.3578663","url":null,"abstract":"This brief investigates the asynchronous <inline-formula> <tex-math>$H_{infty }$ </tex-math></inline-formula> control problem of discrete-time hidden Markov jump power systems (hMJPSs) under cyber attacks. To precisely capture the dynamic characteristics of transient faults and circuit breaker switching in power systems, a hidden Markov jump process with unknown information is introduced. A hybrid scheduling protocol via event triggering is proposed to enhance the utilization of communication resources. By dynamically adjusting the data transmission frequency of sensor nodes, the protocol significantly reduces communication resource usage while maintaining <inline-formula> <tex-math>$H_{infty }$ </tex-math></inline-formula> performance of the system. Additionally, considering the mode mismatched behavior between the power systems and the controllers, the asynchronous state-feedback controller is designed. Through the mode-dependent Lyapunov function, the sufficient conditions for the mean-square stability of hMJPSs are derived. Finally, the effectiveness and practicality of the proposed method are validated via simulation examples.","PeriodicalId":13101,"journal":{"name":"IEEE Transactions on Circuits and Systems II: Express Briefs","volume":"72 8","pages":"1048-1052"},"PeriodicalIF":4.9,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144751078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A 1.8–5.5-V LDO–BGR System With LACM Buffer for High PSRR in Camera Applications 一种1.8 - 5.5 v带LACM缓冲的LDO-BGR系统，用于相机的高PSRR应用

IF 4.9 2区工程技术

IEEE Transactions on Circuits and Systems II: Express Briefs Pub Date : 2025-06-11 DOI: 10.1109/TCSII.2025.3578616

Won-Gyu Kim;Sang-Yun Nam;Young-Jun Jeon;Sung-Wan Hong

引用次数: 0

Privacy-Preserving Optimal Battery Control for Energy Storage Systems Using Adaptive Dynamic Programming 基于自适应动态规划的储能系统保隐私最优电池控制

IF 4.9 2区工程技术

IEEE Transactions on Circuits and Systems II: Express Briefs Pub Date : 2025-06-11 DOI: 10.1109/TCSII.2025.3578944

Jiaoni Wang;Jiayue Sun

引用次数: 0

A Switch-as-Resistor Self-Adaptive Gate-Biasing Technique for Optimized Forward and Reverse Conduction in a CMOS Rectifier 开关电阻自适应门偏置技术优化CMOS整流器正反导通

IF 4.9 2区工程技术

IEEE Transactions on Circuits and Systems II: Express Briefs Pub Date : 2025-06-10 DOI: 10.1109/TCSII.2025.3578345

Yi Chen Lee;Harikrishnan Ramiah;Tian Siang Ho;Fu Qi Chua;Wen Xun Lian;Kishore Kumar Pakkirisami Churchill;Yong Chen

{"title":"A Switch-as-Resistor Self-Adaptive Gate-Biasing Technique for Optimized Forward and Reverse Conduction in a CMOS Rectifier","authors":"Yi Chen Lee;Harikrishnan Ramiah;Tian Siang Ho;Fu Qi Chua;Wen Xun Lian;Kishore Kumar Pakkirisami Churchill;Yong Chen","doi":"10.1109/TCSII.2025.3578345","DOIUrl":"https://doi.org/10.1109/TCSII.2025.3578345","url":null,"abstract":"This brief proposes a switch-as-resistor self-adaptive gate-biasing technique implemented in a 900 MHz single-stage cross-coupled rectifier for IoT and WSN applications. The proposed method employs NMOS switches as the resistive component (RRES), which are controlled by a rectangular signal from a CMOS inverter. This configuration adaptively enables (disables) the NMOS switches during reverse (forward) conduction phases, and self-adaptively provides gate-biasing, resulting in conserved forward charge with mitigated reverse charge. As a result, the output power is enhanced with higher charge accumulation at the output terminal. The circuit gives a measured result of 84.3% in peak power conversion efficiency (PCE) at an input power (PIN) of –21 dBm through a 100 k<inline-formula> <tex-math>$Omega $ </tex-math></inline-formula> load. The proposed circuit also achieves a 25 dB DR with a PCE of over 20%. With a compact chip area of 0.0105 mm2, the rectifier achieves the widest PDR of 25 dB and a sensitivity of –18 dBm under a 100 k<inline-formula> <tex-math>$Omega $ </tex-math></inline-formula> load. Compared to other state-of-the-art rectifiers, the proposed scheme demonstrates higher performance in terms of PDR and PCE.","PeriodicalId":13101,"journal":{"name":"IEEE Transactions on Circuits and Systems II: Express Briefs","volume":"72 8","pages":"1103-1107"},"PeriodicalIF":4.9,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144750906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An Encoding–Decoding-Based State Estimation Scheme for State-Saturated Systems Under Buffer-Aided Mechanism 缓冲辅助下状态饱和系统的一种基于编解码的状态估计方案

IF 4.9 2区工程技术

IEEE Transactions on Circuits and Systems II: Express Briefs Pub Date : 2025-06-10 DOI: 10.1109/TCSII.2025.3578535

Cong Huang;Li Zhu;Weiping Ding;Peng Mei;Shichun Yang;Quan Shi

{"title":"An Encoding–Decoding-Based State Estimation Scheme for State-Saturated Systems Under Buffer-Aided Mechanism","authors":"Cong Huang;Li Zhu;Weiping Ding;Peng Mei;Shichun Yang;Quan Shi","doi":"10.1109/TCSII.2025.3578535","DOIUrl":"https://doi.org/10.1109/TCSII.2025.3578535","url":null,"abstract":"In this brief, the encoding-decoding-based state estimation problem is investigated for a class of state-saturated systems under buffer-aided mechanism where the wireless communication is unreliable. The buffer-aided mechanism is exploited to improve the data utilization and estimation performance with the capability of storing the undelivered signals and then transmits them to the remote estimator at each transmission instant. To overcome inherent communication limitations, a novel probabilistic encoding-decoding scheme is introduced to compress the sensor measurements. The objective of this brief is to develop an encoding-decoding-based estimator such that the estimation error covariance is minimized in certain sense for all possible state saturations as well as the effects induced by buffer-aided mechanism. The estimation error covariance conditioned on the transmission intervals is first obtained in recursions and then is minimized by the choice of the appropriate estimator gain. Finally, simulation results are presented to demonstrate the validity of the proposed estimation scheme.","PeriodicalId":13101,"journal":{"name":"IEEE Transactions on Circuits and Systems II: Express Briefs","volume":"72 8","pages":"1043-1047"},"PeriodicalIF":4.9,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144750996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0