ISA transactions最新文献_第6页

Robust estimation method for power system dynamic synchronization with sensor gain degradation. 传感器增益衰减情况下电力系统动态同步的鲁棒估计方法。

ISA transactions Pub Date : 2025-01-01 Epub Date: 2024-11-14 DOI: 10.1016/j.isatra.2024.10.031

Yi Wang, Jiawei Zhang, Yaoqiang Wang, Zhongwen Li, Kewen Wang, Jun Liang

引用次数: 0

A bearing fault diagnosis method for unknown operating conditions based on differentiated feature extraction. 基于差异化特征提取的未知运行条件下轴承故障诊断方法。

ISA transactions Pub Date : 2025-01-01 Epub Date: 2024-10-26 DOI: 10.1016/j.isatra.2024.10.024

Wei Cao, Zong Meng, Jimeng Li, Yang Guan, Jingjing Fan, Huihui He, Fengjie Fan

引用次数: 0

Approximate tracking control for nonlinear multi-player systems with deferred asymmetric time-varying full-state constraints. 具有延迟非对称时变全状态约束的非线性多玩家系统的近似跟踪控制。

ISA transactions Pub Date : 2025-01-01 Epub Date: 2024-10-28 DOI: 10.1016/j.isatra.2024.10.017

Jinguang Wang, Chunbin Qin, Jingyu Wang, Tingting Yang, Hongru Zhao

{"title":"Approximate tracking control for nonlinear multi-player systems with deferred asymmetric time-varying full-state constraints.","authors":"Jinguang Wang, Chunbin Qin, Jingyu Wang, Tingting Yang, Hongru Zhao","doi":"10.1016/j.isatra.2024.10.017","DOIUrl":"10.1016/j.isatra.2024.10.017","url":null,"abstract":"This paper proposes a set of Nash equilibrium tracking control strategies based on mixed zero-sum (MZS) game for the continuous-time nonlinear multi-player systems with deferred asymmetric time-varying (DATV) full-state constraints and unknown initial state. Firstly, an improved shift transformation is used to modify the original constrained system with an unknown initial state into a barrier transformable constrained system. Then, based on the barrier transformable constrained system and predefined reference trajectory, an unconstrained augmented system is formed through the application of the barrier function (BF) transformation. Furthermore, the MZS game Nash equilibrium tracking control strategies are derived by establishing the tracking error related quadratic cost functions and corresponding HJ functions for different players. On this basis, a critic-only structure is established to approximate the control strategy of every player online. By employing Lyapunov theory, it is proven that the neural network weights and tracking error are uniformly ultimately bounded (UUB) within DATV full-state constraints. Simulation experiments of a three-player nonlinear system demonstrate that our algorithm successfully handles deferred state constraints and unknown initial conditions, ensuring that the system states follow the desired reference trajectories. Simulation results further validate the uniform ultimate boundedness of neural network weights and tracking errors.","PeriodicalId":94059,"journal":{"name":"ISA transactions","volume":" ","pages":"262-270"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142549817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A saturation based self-tuned robust control design for Euler Lagrange systems. 基于饱和度的欧拉-拉格朗日系统自调整鲁棒控制设计

ISA transactions Pub Date : 2025-01-01 Epub Date: 2024-10-28 DOI: 10.1016/j.isatra.2024.10.020

Hazin Inci, Erman Selim, Enver Tatlicioglu, Erkan Zergeroglu, Aydogan Savran

{"title":"A saturation based self-tuned robust control design for Euler Lagrange systems.","authors":"Hazin Inci, Erman Selim, Enver Tatlicioglu, Erkan Zergeroglu, Aydogan Savran","doi":"10.1016/j.isatra.2024.10.020","DOIUrl":"10.1016/j.isatra.2024.10.020","url":null,"abstract":"Control of the family of systems that can be represented in the Euler Lagrange (EL) form is both challenging from a theoretical perspective and applicable to a broad spectrum of real systems. For this type of control problem, given that any parameter estimation error and disturbances are not directly addressed, the system performance deteriorates, and stability cannot be deduced in advance. Considering these issues, this work presents the design and the corresponding analysis of a saturation function based, model-free, continuous robust controller for mechanical systems represented in the EL form. In order to avoid chattering in controller input, which is a common problem in most robust and high-gain control designs, the proposed method makes use of continuously differentiable terms. The stability of the closed-loop system is ensured via rigorous Lyapunov-based arguments. To ease the tuning of the controller gain, an adaptive gain-tuning algorithm is proposed to be applied as an add-on. The effectiveness of the controller is demonstrated by a simulation study on a twin rotor multi-input-multi-output system (TRMS) model Furthermore, the feasibility of the proposed method is then tested on an in-house built, inherently unstable, and therefore extremely sensitive mobile robotic platform. In the experimental study, satisfactory performances are attained for both the controller and the gain-tuning algorithm where less than 0.5° error is obtained in roll and pitch angles and less than 1° error is achieved in the yaw direction.","PeriodicalId":94059,"journal":{"name":"ISA transactions","volume":" ","pages":"565-578"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142565364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fault detection and classification of motor bearings under multiple operating conditions. 多种运行条件下电机轴承的故障检测和分类。

ISA transactions Pub Date : 2025-01-01 Epub Date: 2024-11-20 DOI: 10.1016/j.isatra.2024.11.008

Muhammad Asim Abbasi, Shiping Huang, Aadil Sarwar Khan

{"title":"Fault detection and classification of motor bearings under multiple operating conditions.","authors":"Muhammad Asim Abbasi, Shiping Huang, Aadil Sarwar Khan","doi":"10.1016/j.isatra.2024.11.008","DOIUrl":"10.1016/j.isatra.2024.11.008","url":null,"abstract":"The article presents a framework for fault detection and classification to monitor the condition of motor bearings under multiple operating conditions. The condition monitoring of motor bearings is crucial for failure prevention, as bearings are prone to failure in challenging working environments. Intelligent fault diagnosis methods driven by deep learning and model-based approaches have been widely adopted to address these concerns. However, accurately diagnosing bearing faults across varying conditions and identifying multiple fault types remains challenging. The article proposes a multitask fault detection and classification approach for health monitoring using the HUST motor bearings dataset. The evaluation using HUST motor bearing datasets demonstrates robust performance across diverse operating conditions and in the presence of multiple faults. The HUST dataset is valuable for bearing fault diagnosis due to its diverse operating conditions and inclusion of multiple fault types, offering a realistic representation of fault scenarios derived from real bearing experiments. This methodology enhances the safety and reliability of mechanical equipment, with adaptability to various rotating scenarios.","PeriodicalId":94059,"journal":{"name":"ISA transactions","volume":" ","pages":"61-69"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142735433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A layer-wise melting defects mitigation method in laser powder bed fusion process based on machine learning and fuzzy inference. 基于机器学习和模糊推理的激光粉末床熔化过程中的分层熔化缺陷缓解方法。

ISA transactions Pub Date : 2025-01-01 Epub Date: 2024-11-16 DOI: 10.1016/j.isatra.2024.11.010

Chenguang Ma, Yingjie Zhang

{"title":"A layer-wise melting defects mitigation method in laser powder bed fusion process based on machine learning and fuzzy inference.","authors":"Chenguang Ma, Yingjie Zhang","doi":"10.1016/j.isatra.2024.11.010","DOIUrl":"10.1016/j.isatra.2024.11.010","url":null,"abstract":"Melting defects in Laser Powder Bed Fusion (LPBF) processes, such as lack of fusion (LOF) or over-melting (OM), can cause significant deterioration in mechanical properties and surface roughness of printed parts, potentially leading to process failure. Previous attempts to utilize local melt pool-related information for LPBF process control have faced limitations due to the high requirements on sensors and data processing, as well as the lack of representativeness of local melt pool information. This study focuses on the surface quality of the parts and proposes an image based LPBF control to mitigate melting defect. A quality identification module utilizing convolutional neural networks (CNN) to perform layer-by-layer evaluation of the melting quality of the part. The CNN achieved an accuracy of up to 98.2% in identifying melting quality. Furthermore, based on the surface melting quality extracted by CNN, a fuzzy control strategy (FIC) integrated with a historical state consistency check mechanism (HSCCM) is introduced to determine the optimal control actions for subsequent layers. Experimental results affirm that the FIC integrated with HSCCM effectively alleviates surface melting defects, thereby enhancing surface roughness and manufacturing quality of components. This research offers a novel approach for online quality monitoring and improvement in LPBF processes.","PeriodicalId":94059,"journal":{"name":"ISA transactions","volume":" ","pages":"698-711"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142741866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dynamic event-triggered tracking control for high-order nonlinear systems with time-varying irregular full-state constraints and input saturation. 具有时变不规则全状态约束和输入饱和的高阶非线性系统的动态事件触发跟踪控制。

ISA transactions Pub Date : 2025-01-01 Epub Date: 2024-11-19 DOI: 10.1016/j.isatra.2024.11.015

Yan Jiang, Zhong Guo

{"title":"Dynamic event-triggered tracking control for high-order nonlinear systems with time-varying irregular full-state constraints and input saturation.","authors":"Yan Jiang, Zhong Guo","doi":"10.1016/j.isatra.2024.11.015","DOIUrl":"10.1016/j.isatra.2024.11.015","url":null,"abstract":"This paper investigates the unified tracking control problem for a class of high-order nonlinear systems with 7 kinds of irregular state constraints and input saturation based on the dynamic event-triggered mechanism. The irregular state constraints exist in practical systems, including time-varying constraints, alternation between positive and negative bounds, adding/removing constraints during system operation, and the state of the system being constrained only by the upper/lower boundaries. Auxiliary constraint boundaries are introduced to deal with these irregular state constraints. This unified method allows different auxiliary constrained boundaries in response to specific circumstances, without affecting the controller's structure. Nonlinear transformed functions (NTFs) are used to eliminate the feasibility condition of barrier Lyapunov functions (BLFs) methods. Subsequently, based on the dynamic event-triggered mechanism and adding a power integrator technique, an event-triggered controller is designed to effectively reduce communication burden and energy consumption between the controller and the actuator. Finally, a simulation example and a practical example are given to verify the effectiveness of the proposed unified control method.","PeriodicalId":94059,"journal":{"name":"ISA transactions","volume":" ","pages":"188-201"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142752722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design and real-time evaluation of a novel observer-based predefined-time controller for the industrial processes. 一种新的基于观测器的工业过程预定义时间控制器的设计与实时评估。

ISA transactions Pub Date : 2025-01-01 Epub Date: 2024-11-19 DOI: 10.1016/j.isatra.2024.11.030

Ali Soltani Sharif Abadi, Pouya Heidarpoor Dehkordi, Reza Hajiyan, Ryszard Kowalik, Wiktor Wróblewski

引用次数: 0

Null space-based behavioral control applied to a formation of two quadrotors transporting a cable suspended load. 零空间行为控制应用于两组四旋翼机传送缆索悬浮载荷。

ISA transactions Pub Date : 2025-01-01 Epub Date: 2024-11-28 DOI: 10.1016/j.isatra.2024.11.036

Mauro Sérgio Mafra Moreira, Daniel Khéde Dourado Villa, Mário Sarcinelli-Filho

引用次数: 0

Subspace identification method-based setpoints tracking control and its applications to the column cleaning process. 基于子空间辨识方法的设定值跟踪控制及其在精馏塔清洗过程中的应用。

ISA transactions Pub Date : 2025-01-01 Epub Date: 2024-11-23 DOI: 10.1016/j.isatra.2024.10.030

Zhiqiang Wang, Zhiyuan Song, Dakuo He

{"title":"Subspace identification method-based setpoints tracking control and its applications to the column cleaning process.","authors":"Zhiqiang Wang, Zhiyuan Song, Dakuo He","doi":"10.1016/j.isatra.2024.10.030","DOIUrl":"10.1016/j.isatra.2024.10.030","url":null,"abstract":"As the last subprocess of copper flotation processes, the column cleaning process plays a decisive role in the tailing copper grade (TCG) and concentrate copper grade (CCG), which are the important factors in determining comprehensive economic indicators. Therefore, the problem of setpoints tracking control of TCG and CCG is particularly important. However, the unknown parameters in the column cleaning process bring great challenges to the problem of setpoints tracking. To overcome this problem, a state space model is constructed based on the two phase model of flotation. Due to the complexity of the column cleaning process, the state-space model matrices cannot be detected or calculated directly. Therefore, a deep autoencoder-based subspace identification method (SIM-DAE) is proposed to identify the state-space model matrices. Next, a Lyapunov-Krasovskii function is proposed to verify the stability and anti-interference performance of the identified system. Meanwhile, the state feedback controller is designed that the TCG and CCG can track with the setpoints. Finally, the effectiveness and feasibility of the proposed methods are verified by the data experiments and an industrial field platform.","PeriodicalId":94059,"journal":{"name":"ISA transactions","volume":" ","pages":"669-677"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142848387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0