| Title |
New Design of a Permanent Magnet Linear Synchronous Motor for Seamless Movement of Multiple Passive |
| Authors |
Carriers Ki-Chang Lee ; Min-Tae Kim ; Eui-Ho Song |
| DOI |
10.6113/TKPE/2015.20.5.456 |
| Keywords |
CLPMLSM(Coreless Permanent Magnet Linear Synchronous Motor); Coil-segmented CLPMLSM (CS-CLPMLSM); EMLC(Electromagnetic Levitation Conveyor); Segmented phase coil; 4-pole 3-coil CLPMLSM |
| Abstract |
Nowadays, small quantity batch production, which is so-called a flexible manufacturing system, is a major trend in the modern factory automation industry. The demands for new transportation system are increased gradually, with which multiple passive carriers carrying materials and semi-products are precisely and individually controlled along a single closed rail. Thus, a new type of permanent magnet linear synchronous motor (PMLSM), which consists of state coils on a single rail and PM movers as many as carriers, is proposed in this paper. The rail can be segmented as modules with pairs of coils and a current amplifier, which makes the transportation system simple; therefore, the rail can be easily extended and repaired. A design method of the new PMLSM with a single carrier is proposed, which can be thought as a new version of PMLSM, a coil-segmented coreless PMLSM (CS-CLPMLSM). Experimental setup for it is made, and propulsion results show that with the help of a new effective coil selection and switching algorithms, the conventional current-based vector control is sufficient to fulfill the position and velocity control of the new PMLSM. The proposed PMLSM is expected to fulfill seamless servo-control of multiple carriers also in process line, such as a new generation of flat panel display manufacturing line. |