Design and Optimization of a New Structure PCB Coreless-type Linear Motor

Permanent magnet linear synchronous motors (PMLSM) are widely implemented in precision manufacturing equipment with the advantages of high efficiency and high positioning accuracy. However, the thrust density of the coreless-type PMLSM is small. Due to the existence of processing errors, there is a certain gap between the actual production of the motor and the theoretical design of the motor performance, especially the winding error on the thrust ripple. Aiming at the above problems, this paper proposes a structure of a new PCB coreless-type PMLSM. This structure ensures high accuracy in coil positioning and greatly reduces costs in the manufacture of motors’ actuators. In addition, this motor structure is capable of large electromagnetic thrust within the size constraints of high precision equipment. To this end, this paper presents a three-dimensional structure and analytical model of a new PCB coreless-type PMLSM. Optimization of structural parameters based on response surface method to improve motor performance. The effectiveness of the method is demonstrated by comparing the performance of the motor before and after optimization.