【摘要】 随着起重机械调速控制技术的发展，交流调速已在起重机中得到广泛的应用。本文在介绍起重机旋转机构采用转子串电阻调速控制及变频调速控制原理的特点的基础上．应用实测参数的对比，着重分析变频调速的静、动态性能，指出了采用变频调速控制对改善起重机工作稳定性的重要作用。更多还原

【Abstract】 This paper deals with the theory and property of speed regulation with armature series resistance and variable - frequency for slewing mechanism of crane. By means of the comparison of test data, the authou has given a profound analysis of transient and steady property of variable - frequency speed regulation and placed an emphasis on the importanceof improving operation stability of crane.更多还原