We designed and realized the experiment of testing the characteristic of propulsion and levitation force of lsm . the characteristic curve of propulsion and levitation force - power angle is measured and the effect of excitation on propulsion force and levitated force of motor is analyzed . the analytical result is compared to that of experiments 论文设计并进行了直线同步电机的驱动力和悬浮力特性实验,测量了驱动力和悬浮力与功角的特性关系,分析了励磁性能对电机驱动力与悬浮力的影响。