Publisher : The Korean Society of Mechanical Engineers
DOI : 10.22634/KSME-A.1918.104.22.1687
Title & Authors
An Experimental Study on the Stochastic Control of a Aeroelastic System Kim, Dae-Jung; Park, Sang-Tae; Jeong, Jae-Uk; Heo, Hun;
A Newly proposed control methodology applied to the aeroelastic system experiencing flutter is investigated and its performance is verified experimentally. The flexible cantilever beam slicked with piezofilm sensor and piezoceramic actuator is modelled in physical domain. Dynamic moment equation for the system is derived via Ito's stochastic differential equation and F-P-K equation. Also system's characteristics in stochastic domain is analyzed simultaneously. LQG controller is designed and used in physical and stochastic domain. It is shown experimentally that the vibration of beam is controlled effectively by designed LQG controller in physical domain. By comparing the result with that of LQG controller designed in stochastic domain, it is shown that the new control method, called Heo-stochastic control technique, has better performance as a controller.
PSD(Power Spectral Density);Monte-Carlo Method;Ito's Stochastic Differential Equation;F-P-K Equation;Dynamic Moment Equation;Heo-Stochastic Control Technique;