The SLIM parameters have clear errors to the real values on the base of the RIM parameter measurement method because there are larger air gap and edge effect. SLIM相对旋转异步电机(RIM)存在气隙大、边缘效应等,若采用RIM开路和短路试验方法,会给参数测量带来较大误差。
On the base of finite element method of space rod system, the three-dimensional model is proposed for the structure of retaining and supporting piles. Axial force effect, rim effect and stiffness effect of the top beam are also discussed in this article. 根据空间杆系有限元方法,建立了排桩支护结构的空间模型,分析了圈梁的轴力效应、边长效应和刚度效应。