| Title |
Analysis on Dynamic Characteristics for Moving-Magnet Linear Oscillatory Actuator with Cylindrical Halbach Array |
| Authors |
장석명(Jang, Seok-Myeong) ; 최장영(Choi, Jang-Young) ; 조한욱(Cho, Han-Wook) |
| Keywords |
Tubular Type Moving-Magnet Linear Oscillatory Actuator ; Halbach Array ; Control Parameters ; Dynamic Simulation |
| Abstract |
In the previous work, we performed the analysis of a tubular type moving-magnet linear oscillatory actuator (LOA) with cylindrical Halbach array by using 2-d analytical formulas and confirmed validity of analytical results by comparison of those with both finite element (FE) computation and experimental results. This paper deals with the dynamic characteristic analysis of the moving-magnet LOA with cylindrical Halbach array. Control parameters such as the thrust constant, the back-emf constant, resistance and inductance are obtained from both analytical and experimental results. And then, the dynamic simulation algorithm is established by the state and output equation obtained from voltage and motion equation. Finally, for various values of frequency, the dynamic simulation and experimental results for the characteristics of the voltage, current and displacement of moving-magnet LOA are presented. The simulation results are validated extensively by experiments. The experimental and simulation results for the variation of stroke according to control voltage are also presented for various values of frequency. |