| Title |
Design and Characteristic Analysis of Moving Coil type Linear Oscillatory Actuator Considering Unbalanced Magnetic Circuit |
| Authors |
김덕현(Kim, Duk-Hyun) ; 엄상준(Eum, Sang-Joon) ; 강규홍(Kang, Gyu-Hong) ; 홍정표(Hong, Jung-Pyo) ; 김규탁(Kim, Gyu-Tak) |
| Keywords |
Asymmetric structure ; FEM ; MC-LOA |
| Abstract |
This paper deals with a study to improve the performance of Moving Coil type Linear Oscillatory Actuator (MC-LOA) considering unbalanced magnetic circuit. MC-LOA has an unbalanced magnetic circuit due to its asymmetric structure. In this type of LOA, the airgap flux density tends to have different magnitude along mover's displacement and the current directions. The above property causes eccentric of displacement center and interferes with the proper oscillation of LOA. Therefore, this paper presents two models having the unbalanced magnetic circuit and the other balanced by the saturated core. In order to compare the characteristics between the two models, a characteristic analysis for both the basic model and the improved model is performed by their dynamic analysis composed of kinetic and electric equations and Finite Element Method (FEM). The propriety of the improved model is verified through the experimental results. |