Phillis, Yannis A. Controller design of systems with multiplicative noise. (English) Zbl 0569.93070 IEEE Trans. Autom. Control 30, 1017-1019 (1985). Continuous stochastic systems acted upon by scalar multiplicative and vector additive noises are considered. First examined is the problem of finite-horizon control of such a stochastic system with time-varying parameters under the additional constraint of incomplete state information. The necessary conditions for optimality of the solution are expressed in terms of nonlinear matrix differential equations. Next, taken up is the infinite-horizon case with constant parameters, and the result is given in terms of nonlinear algebraic equations to be solved. Reviewer: E.Yaz Cited in 13 Documents MSC: 93E20 Optimal stochastic control 49K45 Optimality conditions for problems involving randomness 93C05 Linear systems in control theory 93C99 Model systems in control theory 93E11 Filtering in stochastic control theory Keywords:Continuous stochastic systems; scalar multiplicative and vector additive noises; finite-horizon control; incomplete state information; infinite- horizon PDF BibTeX XML Cite \textit{Y. A. Phillis}, IEEE Trans. Autom. Control 30, 1017--1019 (1985; Zbl 0569.93070) Full Text: DOI