文摘
In this paper, the continuous-time input-constrained nonlinear class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0925231216307317&_mathId=si0002.gif&_user=111111111&_pii=S0925231216307317&_rdoc=1&_issn=09252312&md5=7d3c7bcbb17529a07908d000a7392bc9" title="Click to view the MathML source">H∞class="mathContainer hidden">class="mathCode"> state feedback control under event-based environment is investigated with adaptive critic designs and neural network implementation. The nonlinear class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0925231216307317&_mathId=si0003.gif&_user=111111111&_pii=S0925231216307317&_rdoc=1&_issn=09252312&md5=1f7924b164e9d12de9f641613c353ce1" title="Click to view the MathML source">H∞class="mathContainer hidden">class="mathCode"> control issue is regarded as a two-player zero-sum game that requires solving the Hamilton–Jacobi–Isaacs equation and the adaptive critic learning (ACL) method is adopted toward the event-based constrained optimal regulation. The novelty lies in that the event-based design framework is combined with the ACL technique, thereby carrying out the input-constrained nonlinear class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0925231216307317&_mathId=si0004.gif&_user=111111111&_pii=S0925231216307317&_rdoc=1&_issn=09252312&md5=8a72478e3976e87c16c9ec263caa7b37" title="Click to view the MathML source">H∞class="mathContainer hidden">class="mathCode"> state feedback via adopting a non-quadratic utility function. The event-based optimal control law and the time-based worst-case disturbance law are derived approximately, by training an artificial neural network called a critic and eventually learning the optimal weight vector. Under the action of the event-based state feedback controller, the closed-loop system is constructed with uniformly ultimately bounded stability analysis. Simulation studies are included to verify the theoretical results as well as to illustrate the event-based class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0925231216307317&_mathId=si0005.gif&_user=111111111&_pii=S0925231216307317&_rdoc=1&_issn=09252312&md5=fc990704f5bbb635322382bcfe171f8f" title="Click to view the MathML source">H∞class="mathContainer hidden">class="mathCode"> control performance.