Systems & Control Letters最新文献_第4页

Parameter identification of linear systems with heat sensors subject to unknown space-varying parameters 未知空间变化参数下带有热传感器的线性系统的参数识别

IF 2.1 3区计算机科学

Systems & Control Letters Pub Date : 2024-08-13 DOI: 10.1016/j.sysconle.2024.105890

{"title":"Parameter identification of linear systems with heat sensors subject to unknown space-varying parameters","authors":"","doi":"10.1016/j.sysconle.2024.105890","DOIUrl":"10.1016/j.sysconle.2024.105890","url":null,"abstract":"<div><p>We extend existing works on control of (finite-dimensional) linear systems with (infinite-dimensional) heat sensors [6]. The extension lies on the one hand, in the fact that all system poles and zeros are unknown and, on the other, in the fact that sensor equations include unknown spatially-varying parameters. These uncertainties make the problem of parameter identification quite challenging. The existing adaptive observers for this type of systems prove not to be applicable in the presence of these uncertainties. Presently, we develop an identification method that involves multi-sine exciting input signals. Doing so, the inaccessible signal at the junction point, between the system and the sensor, can be given an affine parameterized form. It turns out that the identification problem of the sensor is decoupled from that of the system. Then, a parameter estimator involving K-filters is designed to get estimates of the sensor parameters as well as those of the inaccessible signal at the junction point. A new persistent excitation concept is introduced that ensures exponential convergence of the sensor parameter estimates and the estimated junction signal. The latter is then used to identify the parameters of the system dynamics.</p></div>","PeriodicalId":49450,"journal":{"name":"Systems & Control Letters","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141978914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Viscosity solutions for mean field optimal switching with a two-time-scale Markov chain 使用双时间尺度马尔可夫链的均值场优化切换的粘度解决方案

IF 2.1 3区计算机科学

Systems & Control Letters Pub Date : 2024-08-12 DOI: 10.1016/j.sysconle.2024.105895

引用次数: 0

Solving a class of zero-sum stopping game with regime switching 解决一类具有制度转换的零和停止博弈问题

IF 2.1 3区计算机科学

Systems & Control Letters Pub Date : 2024-08-09 DOI: 10.1016/j.sysconle.2024.105889

引用次数: 0

Sampled-data funnel control and its use for safe continual learning 抽样数据漏斗控制及其在安全持续学习中的应用

IF 2.1 3区计算机科学

Systems & Control Letters Pub Date : 2024-08-09 DOI: 10.1016/j.sysconle.2024.105892

引用次数: 0

Adaptive average control for piecewise deterministic Markov processes 片断确定性马尔可夫过程的自适应平均控制

IF 2.1 3区计算机科学

Systems & Control Letters Pub Date : 2024-08-08 DOI: 10.1016/j.sysconle.2024.105894

{"title":"Adaptive average control for piecewise deterministic Markov processes","authors":"","doi":"10.1016/j.sysconle.2024.105894","DOIUrl":"10.1016/j.sysconle.2024.105894","url":null,"abstract":"<div><p>The main goal of this paper is to study the adaptive infinite-horizon average continuous-time optimal control problem of piecewise deterministic Markov processes (PDMPs) for the case in which there are no boundary jumps. It is assumed that the control acts continuously on the jump intensity <span><math><mi>λ</mi></math></span> and on the transition measure <span><math><mi>Q</mi></math></span> of the process, and that jump parameters (<span><math><mi>λ</mi></math></span> and <span><math><mi>Q</mi></math></span>), as well as the cost <span><math><mi>C</mi></math></span>, depend on an unknown parameter <span><math><msup><mrow><mi>β</mi></mrow><mrow><mo>∗</mo></mrow></msup></math></span>. It is shown that the principle of estimation and control holds, that is, the strategy consisting of choosing, at each stage <span><math><mi>n</mi></math></span>, an action according to an optimal stationary policy, where the true but unknown parameter <span><math><msup><mrow><mi>β</mi></mrow><mrow><mo>∗</mo></mrow></msup></math></span> is replaced by its estimated value <span><math><msubsup><mrow><mi>β</mi></mrow><mrow><mi>n</mi></mrow><mrow><mo>∗</mo></mrow></msubsup></math></span>, is average optimal, provided that the sequence of estimators <span><math><mrow><mo>{</mo><msubsup><mrow><mi>β</mi></mrow><mrow><mi>n</mi></mrow><mrow><mo>∗</mo></mrow></msubsup><mo>}</mo></mrow></math></span> of <span><math><msup><mrow><mi>β</mi></mrow><mrow><mo>∗</mo></mrow></msup></math></span> is strongly consistent, that is, <span><math><msubsup><mrow><mi>β</mi></mrow><mrow><mi>n</mi></mrow><mrow><mo>∗</mo></mrow></msubsup></math></span> converge to <span><math><msup><mrow><mi>β</mi></mrow><mrow><mo>∗</mo></mrow></msup></math></span> almost surely.</p></div>","PeriodicalId":49450,"journal":{"name":"Systems & Control Letters","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141935964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Feedback linear quadratic Nash equilibrium for discrete-time Markov jump linear systems 离散时马尔可夫跃迁线性系统的反馈线性二次纳什均衡

IF 2.1 3区计算机科学

Systems & Control Letters Pub Date : 2024-08-06 DOI: 10.1016/j.sysconle.2024.105893

引用次数: 0

Prescribed-time and output feedback stabilization of heat equation with an intermediate-point heat source and boundary control 带有中间点热源和边界控制的热方程的规定时间和输出反馈稳定化

IF 2.1 3区计算机科学

Systems & Control Letters Pub Date : 2024-08-02 DOI: 10.1016/j.sysconle.2024.105891

引用次数: 0

Synchronization of Kuramoto-oscillator networks under event-triggered impulsive control with noise perturbation 带噪声扰动的事件触发脉冲控制下的库拉莫托振荡器网络同步化

IF 2.1 3区计算机科学

Systems & Control Letters Pub Date : 2024-07-30 DOI: 10.1016/j.sysconle.2024.105884

引用次数: 0

Exponential output tracking via a saturated RLC for a class of nonlinear systems under PSD of periodic references 通过饱和 RLC 对周期性参考 PSD 下的一类非线性系统进行指数输出跟踪

IF 2.1 3区计算机科学

Systems & Control Letters Pub Date : 2024-07-30 DOI: 10.1016/j.sysconle.2024.105888

{"title":"Exponential output tracking via a saturated RLC for a class of nonlinear systems under PSD of periodic references","authors":"","doi":"10.1016/j.sysconle.2024.105888","DOIUrl":"10.1016/j.sysconle.2024.105888","url":null,"abstract":"<div><p>This paper considers the same class of zero-relative-degree nonlinear systems for which a saturated Repetitive Learning Control (RLC) has been recently shown to ensure exponential – and not just asymptotical – convergence to zero of both the output and the input tracking errors in the case of periodic output reference signals with a known single period. The explicit role of the nonlinear unstructured uncertainties is here investigated within the more general scenario in which the output reference signal is multi-periodic. Special emphasis is provided to the generation of the input reference whose effect has to be exponentially nullified by the RLC. In particular, the following question is answered. Restrict the design to the sub-class of periodic output reference signals that admit a Periodic Signal Decomposition (PSD) (namely, the ones that can be written as a finite sum of periodic functions) with pairwise-commensurable periods (so that the knowledge of the multiple periods characterizing the input reference is preserved once the common multiple among the single periods is additionally included). Then, which robustness and convergence properties can be still achieved by the same output-feedback (definitely saturated) RLC, once it is intuitively generalized to transiently include an additional bank of learning estimation schemes corresponding to the single periods? Interestingly, the theoretical tools of this paper can be also used to successfully address identifiability and convergence issues regarding the identification of periodic components of general multi-periodic signals.</p></div>","PeriodicalId":49450,"journal":{"name":"Systems & Control Letters","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0167691124001762/pdfft?md5=6ed8a335b637ea269befc3098a23c1cc&pid=1-s2.0-S0167691124001762-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141935967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Initialization-free Lie-bracket Extremum Seeking 无初始化的列线性极值求解

IF 2.1 3区计算机科学

Systems & Control Letters Pub Date : 2024-07-30 DOI: 10.1016/j.sysconle.2024.105881

{"title":"Initialization-free Lie-bracket Extremum Seeking","authors":"","doi":"10.1016/j.sysconle.2024.105881","DOIUrl":"10.1016/j.sysconle.2024.105881","url":null,"abstract":"<div><p>Stability results for extremum seeking control in <span><math><msup><mrow><mi>R</mi></mrow><mrow><mi>n</mi></mrow></msup></math></span> have predominantly been restricted to local or, at best, semi-global practical stability. Extending semi-global stability results of extremum-seeking systems to unbounded sets of initial conditions often demands a stringent global Lipschitz condition on the cost function, which is rarely satisfied by practical applications. In this paper, we address this challenge by leveraging tools from higher-order averaging theory. In particular, we establish a novel second-order averaging result with <em>global</em> (practical) stability implications. By leveraging this result, we characterize sufficient conditions on cost functions under which uniform global (i.e., under any initialization) practical asymptotic stability can be established for a class of extremum-seeking systems acting on static maps. Our sufficient conditions include the case when the gradient of the cost function, rather than the cost function itself, satisfies a global Lipschitz condition, which covers quadratic cost functions. Our results are also applicable to vector fields that are not necessarily Lipschitz continuous at the origin, opening the door to non-smooth Lie-bracket ES dynamics. We illustrate all the results via different analytical and/or numerical examples.</p></div>","PeriodicalId":49450,"journal":{"name":"Systems & Control Letters","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141935969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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