{"title":"全耦合非线性FBS△Es:可解性和LQ控制见解","authors":"Zhipeng Niu , Qingxin Meng , Xun Li , Maoning Tang","doi":"10.1016/j.automatica.2025.112601","DOIUrl":null,"url":null,"abstract":"<div><div>In this paper, a class of fully coupled nonlinear forward–backward stochastic difference equations (FBS<span><math><mo>△</mo></math></span>Es) is proposed and the existence of solutions is proved based on a linear-quadratic (LQ) optimal control problem. Inspired from the solvability studies of various forward–backward stochastic differential equations (FBSDEs), the dominant-monotone framework is discretized and a continuum approach is used to prove the unique solvability of the fully coupled FBS<span><math><mo>△</mo></math></span>Es and to obtain a pair of estimates on the solutions, and finally, the conclusions are applied to the related LQ problem.</div></div>","PeriodicalId":55413,"journal":{"name":"Automatica","volume":"183 ","pages":"Article 112601"},"PeriodicalIF":5.9000,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Fully coupled nonlinear FBS△Es: Solvability and LQ control insights\",\"authors\":\"Zhipeng Niu , Qingxin Meng , Xun Li , Maoning Tang\",\"doi\":\"10.1016/j.automatica.2025.112601\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>In this paper, a class of fully coupled nonlinear forward–backward stochastic difference equations (FBS<span><math><mo>△</mo></math></span>Es) is proposed and the existence of solutions is proved based on a linear-quadratic (LQ) optimal control problem. Inspired from the solvability studies of various forward–backward stochastic differential equations (FBSDEs), the dominant-monotone framework is discretized and a continuum approach is used to prove the unique solvability of the fully coupled FBS<span><math><mo>△</mo></math></span>Es and to obtain a pair of estimates on the solutions, and finally, the conclusions are applied to the related LQ problem.</div></div>\",\"PeriodicalId\":55413,\"journal\":{\"name\":\"Automatica\",\"volume\":\"183 \",\"pages\":\"Article 112601\"},\"PeriodicalIF\":5.9000,\"publicationDate\":\"2025-09-26\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Automatica\",\"FirstCategoryId\":\"94\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0005109825004960\",\"RegionNum\":2,\"RegionCategory\":\"计算机科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"AUTOMATION & CONTROL SYSTEMS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Automatica","FirstCategoryId":"94","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0005109825004960","RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"AUTOMATION & CONTROL SYSTEMS","Score":null,"Total":0}
Fully coupled nonlinear FBS△Es: Solvability and LQ control insights
In this paper, a class of fully coupled nonlinear forward–backward stochastic difference equations (FBSEs) is proposed and the existence of solutions is proved based on a linear-quadratic (LQ) optimal control problem. Inspired from the solvability studies of various forward–backward stochastic differential equations (FBSDEs), the dominant-monotone framework is discretized and a continuum approach is used to prove the unique solvability of the fully coupled FBSEs and to obtain a pair of estimates on the solutions, and finally, the conclusions are applied to the related LQ problem.
期刊介绍:
Automatica is a leading archival publication in the field of systems and control. The field encompasses today a broad set of areas and topics, and is thriving not only within itself but also in terms of its impact on other fields, such as communications, computers, biology, energy and economics. Since its inception in 1963, Automatica has kept abreast with the evolution of the field over the years, and has emerged as a leading publication driving the trends in the field.
After being founded in 1963, Automatica became a journal of the International Federation of Automatic Control (IFAC) in 1969. It features a characteristic blend of theoretical and applied papers of archival, lasting value, reporting cutting edge research results by authors across the globe. It features articles in distinct categories, including regular, brief and survey papers, technical communiqués, correspondence items, as well as reviews on published books of interest to the readership. It occasionally publishes special issues on emerging new topics or established mature topics of interest to a broad audience.
Automatica solicits original high-quality contributions in all the categories listed above, and in all areas of systems and control interpreted in a broad sense and evolving constantly. They may be submitted directly to a subject editor or to the Editor-in-Chief if not sure about the subject area. Editorial procedures in place assure careful, fair, and prompt handling of all submitted articles. Accepted papers appear in the journal in the shortest time feasible given production time constraints.