Author(s)

L. Wang

Abstract

Random optimal control for rail track structure with train excitation L. Wang Graduate School, China Academy of Railway Sciences, Beijing 100081, Peoples Republic of China ABSTRACT In this paper, the passive control problem of the random vibration system of rail structure is discussed with an optimal control theory and a random optimal control algorithm of the passive control for rail structure is pro- posed, so as to provide basis for designing reasonable vibration absorber parameters. The space domain integration of the variance weighting sum of rail displacement and vibration acceleration is used as evaluation func- tion, and the state variables are expressed with quadratic evaluation func- tion. The vibration absorber parameters of rail structure system are opti- mally designed with a suboptimal method. With the absorber parameters resolved, the nonstationary random vibration is numerically simulated for examining the algorithm, and the notable results are achieved. Tes

Keywords