Saddle-Point Equilibrium Strategy for Linear Quadratic Uncertain Stochastic Hybrid Differential Games Based on Subadditive Measures

Author:

Jia Zhifu1ORCID,Li Cunlin2

Affiliation:

1. School of Sciences and Arts, Suqian University, Suqian 223800, China

2. Ningxia Key Laboratory of Intelligent Information and Big Data Processing, Governance and Social Management Research Center of Northwest Ethnic Regions, North Minzu University, Yinchuan 750021, China

Abstract

This paper describes a kind of linear quadratic uncertain stochastic hybrid differential game system grounded in the framework of subadditive measures, in which the system dynamics are described by a hybrid differential equation with Wiener–Liu noise and the performance index function is quadratic. Firstly, we introduce the concept of hybrid differential games and establish the Max–Min Lemma for the two-player zero-sum game scenario. Next, we discuss the analysis of saddle-point equilibrium strategies for linear quadratic hybrid differential games, addressing both finite and infinite time horizons. Through the incorporation of a generalized Riccati differential equation (GRDE) and guided by the principles of the Itô–Liu formula, we prove that that solving the GRDE is crucial and serves as both a sufficient and necessary precondition for identifying equilibrium strategies within a finite horizon. In addition, we also acquire the explicit formulations of equilibrium strategies in closed forms, alongside determining the optimal values of the cost function. Through the adoption of a generalized Riccati equation (GRE) and applying a similar approach to that used for the finite horizon case, we establish that the ability to solve the GRE constitutes a sufficient criterion for the emergence of equilibrium strategies in scenarios extending over an infinite horizon. Moreover, we explore the dynamics of a resource extraction problem within a finite horizon and separately delve into an H∞ control problem applicable to an infinite horizon. Finally, we present the conclusions.

Funder

the Suqian Sci & Tech Program

the Startup Foundation for Newly Recruited Employees

the Major Projects of North Minzu University

the Governance and Social Management Research Center, Northwest Ethnic Regions and First-Class Disciplines Foundation of Ningxia

Publisher

MDPI AG

Reference27 articles.

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4. Dockner, E., Jorgensen, S., Long, N., and Sorger, G. (2000). Differential Games in Economics and Management Science, Cambridge University Press.

5. Differential games and optimal pursuit-evasion strategies;Ho;IEEE Trans. Autom. Control,1965

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