The linear flux switching permanent magnet (LFSPM) motor were capable for long secondary application due to that both the PMs and armature winding were on the short primary, in addition, the secondary was simple and robust. For this kind of machine, high average thrust force was highly desirable, however, low thrust force ripples were also required. A doublesided Ccore LFSPM (DSSLFSPMC) motor was investigated and improved. After being optimized for optimal thrust force using Maxwell 2D, this machine was improved to suppress the thrust force ripple without the decrease of the average thrust force based on a staggered secondary teeth structure and two end PMs. The analysis results showed that the improved DSSLFSPMC machine exhibits relatively low normal force and high thrust force as well as low thrust ripple, indicating that they were suitable for longstroke applications.