ISA transactions最新文献_第2页

Improved control method of the paralleled three-phase two-level inverters for common-mode voltage and circulating current suppression 用于抑制共模电压和环流的并联三相两电平逆变器的改进控制方法

IF 6.3 2区计算机科学

ISA transactions Pub Date : 2024-08-01 DOI: 10.1016/j.isatra.2024.05.034

{"title":"Improved control method of the paralleled three-phase two-level inverters for common-mode voltage and circulating current suppression","authors":"","doi":"10.1016/j.isatra.2024.05.034","DOIUrl":"10.1016/j.isatra.2024.05.034","url":null,"abstract":"<div><p>The paralleled configuration of three-phase two-level (3P2L) inverters has been put forward to increase the output power rating, operating efficiency, and system reliability. Nevertheless, this architecture brings about the serious circulating current problem, which distorts the quality of output currents, results in additional power losses, and reduces the system efficiency. Another problem is the common-mode voltage (CMV), which causes electromagnetic interference and threatens the safe operation of the system. There exists interconnection between these two issues in the paralleled 3P2L inverters. To suppress the CMV and circulating current simultaneously, an improved control method is presented. At first, the discrete model of paralleled 3P2L inverters is established, based on which the improved control method is designed to restrain the circulating current, while the parameter tuning is avoided. In addition, the zero-sequence component injection associated with the optimized configuration of carrier phase is conducted, and the CMV magnitude of each inverter is limited within one-sixth of dc-side voltage. When comparing with the traditional space vector modulation (SVM) approach, the CMV magnitude is restrained by two-thirds by the presented method. The hardware-based evaluation results have been provided to validate the presented approach.</p></div>","PeriodicalId":14660,"journal":{"name":"ISA transactions","volume":null,"pages":null},"PeriodicalIF":6.3,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141132635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A generalized Udwadia–Kalaba control design for uncertain belt conveyor systems with inequality constraints 针对具有不平等约束条件的不确定带式输送机系统的广义 Udwadia-Kalaba 控制设计。

IF 6.3 2区计算机科学

ISA transactions Pub Date : 2024-08-01 DOI: 10.1016/j.isatra.2024.05.046

引用次数: 0

Full prescribed performance trajectory tracking control strategy of autonomous underwater vehicle with disturbance observer 具有扰动观测器的自主潜水器全预定性能轨迹跟踪控制策略

IF 6.3 2区计算机科学

ISA transactions Pub Date : 2024-08-01 DOI: 10.1016/j.isatra.2024.06.002

{"title":"Full prescribed performance trajectory tracking control strategy of autonomous underwater vehicle with disturbance observer","authors":"","doi":"10.1016/j.isatra.2024.06.002","DOIUrl":"10.1016/j.isatra.2024.06.002","url":null,"abstract":"<div><p>This paper investigates trajectory tracking control of the Autonomous Underwater Vehicle (AUV) with the general uncertainty consisting of model uncertainties and unknown ocean current disturbances. A full prescribed performance control strategy based on disturbance observer is developed, which ensures that the tracking error, the velocity error, and the observation error are all constrained. First, under the case of unmeasurable AUV acceleration, a fixed-time observer is constructed to estimate the general uncertainty, which constrains the observation error within the prescribed accuracy by a prescribed performance observer. Then, based on the performance function and corresponding error transformation, a prescribed performance protocol is designed to realize the trajectory tracking control, so that the observation error, the tracking error, and the velocity error are all constrained within the prescribed accuracy range. Simulation results demonstrate the efficiency of the full prescribed performance control strategy while the AUV tracking control with full state constraints is feasible. Moreover, compared with the other two relevant works, this study improves the observation performance by at least 10 %, both in case of deepwater disturbances and near-surface disturbances.</p></div>","PeriodicalId":14660,"journal":{"name":"ISA transactions","volume":null,"pages":null},"PeriodicalIF":6.3,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141394829","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Robust fault detection and isolation for uncertain neutral time-delay systems using a geometric approach 利用几何方法对不确定中性时延系统进行鲁棒故障检测和隔离

IF 6.3 2区计算机科学

ISA transactions Pub Date : 2024-08-01 DOI: 10.1016/j.isatra.2024.05.038

引用次数: 0

Magnetic levitation system control based on a novel tracking differentiator 基于新型跟踪微分器的磁悬浮系统控制。

IF 6.3 2区计算机科学

ISA transactions Pub Date : 2024-08-01 DOI: 10.1016/j.isatra.2024.05.037

引用次数: 0

Secure output consensus for multi-agent systems under edge-based event-trigger against denial-of-service 基于边缘事件触发的多代理系统安全输出共识，对抗拒绝服务。

IF 6.3 2区计算机科学

ISA transactions Pub Date : 2024-08-01 DOI: 10.1016/j.isatra.2024.05.053

引用次数: 0

Fully distributed consensus of discrete-time linear multi-agent systems with large input and communication delays 具有大输入和通信延迟的离散时间线性多代理系统的全分布式共识。

IF 6.3 2区计算机科学

ISA transactions Pub Date : 2024-08-01 DOI: 10.1016/j.isatra.2024.05.047

引用次数: 0

A model-based sliding mode control with intelligent distribution for a proportional valve driven by digital valve arrays 基于模型的滑动模式控制，用于数字阀阵列驱动的比例阀的智能分布

IF 6.3 2区计算机科学

ISA transactions Pub Date : 2024-08-01 DOI: 10.1016/j.isatra.2024.05.027

{"title":"A model-based sliding mode control with intelligent distribution for a proportional valve driven by digital valve arrays","authors":"","doi":"10.1016/j.isatra.2024.05.027","DOIUrl":"10.1016/j.isatra.2024.05.027","url":null,"abstract":"<div><p>Parallel-connected digital valve arrays are commonly utilized in the pilot stage of the proportional directional valve to enhance dynamic performance and reliability. However, when the digital valve array is driven by a digital signal, it is difficult to optimally assign the signal pulses to each valve. If the assignment is not well executed, it can significantly reduce the switching uniformity of the digital valves or lead to performance degradation of the system. In this paper, a model-based sliding mode control strategy based on the intelligent distribution of control law is proposed and successfully applied to a proportional valve driven by digital valve arrays. The intelligent distribution strategy encompasses a logic distribution algorithm and a circular sliding distribution algorithm that automatically assigns control laws to different valves based on the rolling of the PWM signal cycle. Experimental results confirm that the proposed strategy not only simultaneously reduces the total number of valve switches and enhances the switching uniformity among the valves, but also adapts to the variation in the number of valves. The proposed strategy is not limited to the application of digital valve arrays, it is also applicable in other fields of multi-actuators driven by digital signals, and can simultaneously improve the control accuracy, lifetime, and maintenance friendliness.</p></div>","PeriodicalId":14660,"journal":{"name":"ISA transactions","volume":null,"pages":null},"PeriodicalIF":6.3,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141048565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Adaptive differential steering strategy for distributed driving unmanned ground vehicle with variable configurations based on modified localized modelling sliding mode control 基于改进型局部建模滑模控制的分布式驾驶无人地面车辆自适应差分转向策略

IF 6.3 2区计算机科学

ISA transactions Pub Date : 2024-08-01 DOI: 10.1016/j.isatra.2024.05.045

{"title":"Adaptive differential steering strategy for distributed driving unmanned ground vehicle with variable configurations based on modified localized modelling sliding mode control","authors":"","doi":"10.1016/j.isatra.2024.05.045","DOIUrl":"10.1016/j.isatra.2024.05.045","url":null,"abstract":"<div><p>When performing complex tasks such as position transfer and material transportation, the distributed driving unmanned platform with variable configurations needs to address the challenge of multi-wheel cooperative torque distribution control to achieve high-performance differential steering and enhance vehicle dynamics. The configuration change will impact the dynamic performance of the unmanned platform, posing a challenge to the performance of the existing control strategy based on mathematical model development. In order to address the aforementioned issues, this paper analyzes the impact of changes in vehicle configuration on steering gain and proposes a hierarchical adaptive differential steering strategy based on variable vehicle configurations. Firstly, the response characteristics of the yaw angle relative to the active yaw moment under the influence of changes in wheelbase and tread are analyzed. Based on this analysis, two structural modes, maneuverable and balanced, are selected. Secondly, a localized-modelling sliding mode control method with an extended state observer is proposed to estimate the desired yaw moment in the upper controller, considering the motor's execution delay. Then, the lower controller optimizes the torque of each wheel in real-time using the whale optimization algorithm. It aims to optimize tire energy dissipation and tire load rate while ensuring driving stability and achieving differential steering. Finally, through co-simulation and experiments on a scaled prototype, the reliability of the dynamics theory and the superiority of the control algorithm are validated. This optimization has led to significant improvements in the tire dissipation energy index and tire load rate index.</p></div>","PeriodicalId":14660,"journal":{"name":"ISA transactions","volume":null,"pages":null},"PeriodicalIF":6.3,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141274911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Integral sliding mode control and stability for Markov jump systems with structured perturbations and time-varying delay driven by fractional Brownian motion 分数布朗运动驱动的具有结构化扰动和时变延迟的马尔可夫跃迁系统的积分滑模控制和稳定性

IF 6.3 2区计算机科学

ISA transactions Pub Date : 2024-08-01 DOI: 10.1016/j.isatra.2024.05.025

引用次数: 0