针对起重机常用的电气传动方案，提出采用矢量控制变频调速是最优方案，它能改善整机的性能，特别是能较好地解决起升机构上使用变频调速的一些关键技术。%Be aimed at general electic drive schemes of crane, this paperpresents a best scheme which adopt vector control speed regulating to improve comprehensive performance of the crane. It can especially solve some key technology for using variable frequenly regulating on crane's hosting mechanism.
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