ISA transactions最新文献_第6页

Multi-objective optimization of a triple-eccentric butterfly valve considering structural safety and sealing performance. 考虑结构安全和密封性能的三偏心蝶阀多目标优化。

ISA transactions Pub Date : 2024-10-15 DOI: 10.1016/j.isatra.2024.10.009

Chenglong Wang, Dongtao Xu, Kaixian Huang, Yanan Liu, Lipo Yang

{"title":"Multi-objective optimization of a triple-eccentric butterfly valve considering structural safety and sealing performance.","authors":"Chenglong Wang, Dongtao Xu, Kaixian Huang, Yanan Liu, Lipo Yang","doi":"10.1016/j.isatra.2024.10.009","DOIUrl":"https://doi.org/10.1016/j.isatra.2024.10.009","url":null,"abstract":"The structural safety and sealing performance of a triple-eccentric butterfly valve are crucial technical indicators that influence its reliability and service life. In this study, a new multi-objective optimization strategy is proposed to realize a lightweight design of valve trims, reduce the maximum equivalent stress, and reasonably distribute the sealing-specific pressure. A two-stage optimization scheme is designed by combining topology optimization (TO) and response surface methodology optimization (RSM). The topology optimization is employed to allocate the material distribution of the valve trims and provide the parameters for the response surface optimization, while the response surface methodology optimization conducts a further revision and optimization of the structural parameters of the valve trims. The results of the simulation experiments indicate that the maximum equivalent stress of the lightweight designed valve trims is reduced from 290.85 MPa to 99.88 MPa, and the maximum sealing-specific pressure of the sealing surface is reduced from 197.78 MPa to 77.83 MPa. Additionally, a novel approach is presented for assessing the sealing performance using the clearance of the fitting surface. This method can intuitively evaluate the state of metal sealing and guide the design of the fitting tolerance by analyzing the sensitivity of the dimensional deviation to the sealing-specific pressure. The findings demonstrate that the optimized valve exhibits good structural safety and sealing performance.","PeriodicalId":94059,"journal":{"name":"ISA transactions","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142484205","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

Iterative control decoupling tuning for precision MIMO motion systems: A matrix update method. 精密多输入多输出运动系统的迭代控制解耦调整：矩阵更新法

ISA transactions Pub Date : 2024-10-11 DOI: 10.1016/j.isatra.2024.10.003

Hongyang Zhao, Yu Wan, Li Li, Yue Dong, Ning Cui, Yang Liu

{"title":"Iterative control decoupling tuning for precision MIMO motion systems: A matrix update method.","authors":"Hongyang Zhao, Yu Wan, Li Li, Yue Dong, Ning Cui, Yang Liu","doi":"10.1016/j.isatra.2024.10.003","DOIUrl":"https://doi.org/10.1016/j.isatra.2024.10.003","url":null,"abstract":"Control decoupling is the basic control step for precision MIMO (Multi-Input-Multi-Output) motion systems. After decoupling, the MIMO logical controlled plant can be diagonal dominant so that the control design for each DOF (Degree of Freedom) can be separately treated. However, due to the manufacturing tolerances and the assembling errors, the actual CoG (Center of Gravity) and actuator positions are inconsistent with the designed values. The nominal static control decoupling matrix is inaccurate, which significantly deteriorates the decoupling performance. To address the problem, this paper develops a matrix update based iterative control decoupling tuning method. Tuning with feedback control signals to achieve accurate tuning is its first distinct feature. By employing rigid-body model information to construct more accurate basis functions, fast tuning can also be achieved, especially for relatively low control bandwidth occasions. Differing from the feedforward compensation based iterative control decoupling tuning method, the matrix update method improves the dynamics of the logical controlled plant, does not increase the control complexity and is more robust to the inaccuracy of the model information. Experimental results on the short-stroke module of a precision motion stage which is the key subsystem of the lithographic projection lens testing system present significant control decoupling performance improvement (for example the peak value of the Rx-DOF servo error caused by the Z-DOF movement is reduced from 1.29 ×10-5 m to 3.19 ×10-6 m) after just two trials.","PeriodicalId":94059,"journal":{"name":"ISA transactions","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142515324","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

Performance and stability analysis of interacting multiple model estimator under unobservable packet loss. 不可观测数据包丢失情况下交互多模型估计器的性能和稳定性分析。

ISA transactions Pub Date : 2024-10-11 DOI: 10.1016/j.isatra.2024.10.005

Hong Lin, James Lam, Zidong Wang, Zhan Shu

引用次数: 0

Optimized distributed formation control using identifier-critic-actor reinforcement learning for a class of stochastic nonlinear multi-agent systems. 针对一类随机非线性多代理系统，利用识别器-批评者-代理强化学习优化分布式编队控制。

ISA transactions Pub Date : 2024-10-11 DOI: 10.1016/j.isatra.2024.10.004

Guoxing Wen, Ben Niu

{"title":"Optimized distributed formation control using identifier-critic-actor reinforcement learning for a class of stochastic nonlinear multi-agent systems.","authors":"Guoxing Wen, Ben Niu","doi":"10.1016/j.isatra.2024.10.004","DOIUrl":"https://doi.org/10.1016/j.isatra.2024.10.004","url":null,"abstract":"This article is to propose an adaptive reinforcement learning (RL)-based optimized distributed formation control for the unknown stochastic nonlinear single-integrator dynamic multi-agent system (MAS). For solving the issue of unknown dynamic, an adaptive identifier neural network (NN) is developed to determine the stochastic MAS under expectation sense. And then, for deriving the optimized formation control, the RL is putted into effect via constructing a pair of critic and actor NNs. With regard of the traditional RL optimal controls, their algorithm exists the inherent complexity, because their adaptive RL algorithm are derived from negative gradient of the square of Hamilton-Jacobi-Bellman (HJB) equation. As a result, these methods are difficultly extended to stochastic dynamical systems. However, since this adaptive RL laws are derived from a simple positive function rather than the square of HJB equation, it can make optimal control with simple algorithm. Therefore, this optimized formation scheme can be smoothly performed to the stochastic MAS. Finally, according to theorem proof and computer simulation, the optimized method can realize the required control objective.","PeriodicalId":94059,"journal":{"name":"ISA transactions","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142549818","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

Skill acquisition framework in multi-robot precision assembly based on cooperative compliant control. 基于合作服从控制的多机器人精密装配技能获取框架。

ISA transactions Pub Date : 2024-10-10 DOI: 10.1016/j.isatra.2024.10.002

Xiaogang Song, Peng Xu, Wenfu Xu, Bing Li

引用次数: 0

Iterative learning robust security predictive tracking control for small delay batch processes: Deception attacks on unreliable network channel. 小延迟批处理的迭代学习鲁棒安全预测跟踪控制：不可靠网络通道上的欺骗攻击

ISA transactions Pub Date : 2024-10-06 DOI: 10.1016/j.isatra.2024.10.001

Hui Li, Shiqi Wang, Ping Li

{"title":"Iterative learning robust security predictive tracking control for small delay batch processes: Deception attacks on unreliable network channel.","authors":"Hui Li, Shiqi Wang, Ping Li","doi":"10.1016/j.isatra.2024.10.001","DOIUrl":"https://doi.org/10.1016/j.isatra.2024.10.001","url":null,"abstract":"During the batch process, the need for security control is becoming increasingly urgent with the gradual penetration of network control technology. For small time delay batch processes subject to deception attacks, an iterative learning robust security predictive tracking control approach is developed. Reviewing previous studies for iterative learning control, the issue that the repetitive character of the batch process would mask the characteristics of deception attacks was not considered. Moreover, the gains of iterative learning control law are utilized offline, which makes large deviations for the system state as the operating time increases. This will lead to \"excessive-input\" conditions for control inputs, which means more consumption of energy and production resources. To address these challenges, we introduce robust security invariant sets to improve the robustness of the system by constraining the system state to be in a safe range. Also, the design of the iterative learning controller incorporates deception attack data for historical batches, which is continuously improved and optimized to withstand deception attacks. Meanwhile, by calculating stability conditions online, the real-time control law gain is obtained, which could make the control inputs adjusted online based on the real-time system's dynamic characteristics, avoiding excessive inputs and improving the efficiency of energy and resource utilization. Additionally, the stability analysis proves that the system is input to state stability. Ultimately, simulation verifies the effectiveness and feasibility of the developed method.","PeriodicalId":94059,"journal":{"name":"ISA transactions","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142484204","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 data-driven guaranteed zonotopic estimation for unknown time-varying system. 未知时变系统的数据驱动有保证的区位估计。

ISA transactions Pub Date : 2024-10-05 DOI: 10.1016/j.isatra.2024.09.032

Xiang Ma, Xinggao Liu

引用次数: 0

Robust non-fragile hybrid control for delayed uncertain singular impulsive jump systems based on improved impulse instant-dependent auxiliary functions method. 基于改进的脉冲瞬时相关辅助函数法的延迟不确定奇异脉冲跳跃系统的鲁棒非脆弱混合控制。

ISA transactions Pub Date : 2024-10-03 DOI: 10.1016/j.isatra.2024.09.028

Yiqun Liu, Guangming Zhuang, Zekun Wang, Yanqian Wang

{"title":"Robust non-fragile hybrid control for delayed uncertain singular impulsive jump systems based on improved impulse instant-dependent auxiliary functions method.","authors":"Yiqun Liu, Guangming Zhuang, Zekun Wang, Yanqian Wang","doi":"10.1016/j.isatra.2024.09.028","DOIUrl":"https://doi.org/10.1016/j.isatra.2024.09.028","url":null,"abstract":"This article researches the issue of robust non-fragile hybrid control for delayed uncertain singular impulsive jump systems (USIMJSs). The key aim is to design non-fragile hybrid state feedback controllers (including a non-fragile normal state feedback controller and a non-fragile impulsive state feedback controller), which are insensitive to the uncertainties of gains of controllers and can provide sufficient tuning margins. The non-fragile normal state feedback controller can eliminate the internal impulses and overcome the external disturbances; the non-fragile impulsive state feedback controller can suppress the interference of external unstable impulses and restrain the instantaneous jumps caused by Markovian modes switching. By introducing impulse instant-dependent auxiliary functions, the improved impulse-time-dependent Lyapunov-Krasovskii functional is constructed, which can capture the information of the impulse instants and Markovian jump modes. Novel criteria of robust admissibilization for delayed USIMJSs are acquired under linear matrix inequalities framework. Lastly, the effectiveness of the derived algorithm and designed method is confirmed by simulation examples including a direct current motor-controlled inverted pendulum device and a Quarter-Car active suspension model.","PeriodicalId":94059,"journal":{"name":"ISA transactions","volume":" ","pages":"1-21"},"PeriodicalIF":0.0,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142396324","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

An in-phase filter-based flux observation strategy for sensorless control of PMSMs. 基于同相滤波器的磁通量观测策略，用于无传感器控制 PMSM。

ISA transactions Pub Date : 2024-10-03 DOI: 10.1016/j.isatra.2024.09.030

Lei Zheng, Yanhui Tong, Hamid Reza Karimi, Bixuan Huang

{"title":"An in-phase filter-based flux observation strategy for sensorless control of PMSMs.","authors":"Lei Zheng, Yanhui Tong, Hamid Reza Karimi, Bixuan Huang","doi":"10.1016/j.isatra.2024.09.030","DOIUrl":"https://doi.org/10.1016/j.isatra.2024.09.030","url":null,"abstract":"Due to the complexity of determining the initial rotor flux and detecting errors, conventional rotor flux observation methods are easily affected by direct current (DC) components and harmonics. To address this issue, this paper proposes an in-phase filter (IPF)-based rotor flux observation strategy for sensorless control of permanent magnet synchronous machines (PMSMs). The core components of the IPF consist of a double second-order generalized integrator (DSOGI) and a phase angle compensation transfer function (PACTF). The DSOGI provides a accurate electrical angular frequency, while the PACTF implements a phase correction to the vq' signals. By employing IPF structure, accurate observations for rotor flux, electronic speed, and rotor position are achieved, which can be effectively used in the sensorless control of PMSMs, eliminating the need for magnitude and phase compensations. Finally, the proposed observation strategy is applied to an experimental bench of a PMSM, and its effectiveness is illustrated by experimental results. From experimental results, it can be concluded that the IPF is significantly better than the LPF, and 5% more accurate than the observer based on cascade second-order generalized integral(CSOGI) overall.","PeriodicalId":94059,"journal":{"name":"ISA transactions","volume":" ","pages":"1-12"},"PeriodicalIF":0.0,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142383068","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

PCLOS based fractional-order sliding mode stochastic path following control for underactuated marine vehicles with multiple disturbances and constraints. 基于 PCLOS 的分数阶滑动模式随机路径跟踪控制，适用于具有多重干扰和约束条件的欠驱动海洋车辆。

ISA transactions Pub Date : 2024-10-02 DOI: 10.1016/j.isatra.2024.09.027

Yanyun Wang, Yuxiang Guo, Zhuxin Zhang, Zhanyuan Wang, Jianming Miao, Xingyu Sun

{"title":"PCLOS based fractional-order sliding mode stochastic path following control for underactuated marine vehicles with multiple disturbances and constraints.","authors":"Yanyun Wang, Yuxiang Guo, Zhuxin Zhang, Zhanyuan Wang, Jianming Miao, Xingyu Sun","doi":"10.1016/j.isatra.2024.09.027","DOIUrl":"https://doi.org/10.1016/j.isatra.2024.09.027","url":null,"abstract":"This paper investigates the stochastic path following control of underactuated marine vehicles (UMVs) subject to multiple disturbances and constraints. Firstly, the complex marine environment in which UMVs navigate typically contains stochastic components, thus the multiple disturbances are categorized as slow-varying deterministic disturbances and stochastic disturbances. Secondly, a position-constrained line-of-sight (PCLOS) based fractional-order sliding mode stochastic (FSMS) control strategy is established to achieve path following control of UMVs. A PCLOS guidance law based on universal barrier Lyapunov function is proposed to ensure that the position errors remain within the constraint ranges, which is versatile for systems with symmetric constraints or without constraints. An FSMS controller based on fractional-order theory and sliding mode control is designed to improve the dynamic response speed of the system and effectively attenuate chattering phenomenon. A stochastic disturbance observer is developed to estimate the slow-varying deterministic disturbances in the stochastic system, and auxiliary dynamic compensators are used to mitigate the impact of input constraints. Lastly, theoretical analysis indicates that the closed-loop system is stable and the position constraint requirements are satisfied. Comparative simulations illustrate the effectiveness of the proposed control strategy.","PeriodicalId":94059,"journal":{"name":"ISA transactions","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142396323","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