The brake beam(connecting plate) is often broken, and the bolts for fixing the connecting plate are loosed due to the crane′s dynamic load when D series of crane beams are working in a steel plant.

某钢厂列吊车梁在工作中，由于吊车工作的动态作用，导致制动梁（连接板）经常发生断裂，固定连接板的螺栓松动。

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According to the practical condition, the typical working process of tower crane are analyzed in detail and the tower crane's load case for dynamic analysis are determined.

描述塔式起重机的典型作业过程，分析作业过程中出现最大动载荷的可能工况，从而对塔机结构体系动态分析计算工况作出准确、合理的选择。

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In order to improve its dynamic and static performance of loading, adaptive control is used to change its exciting current for achieving accurate simulation of the actual working load.

为了提高电涡流测功器加载的动、静态性能，采用自适应控制来改变电涡流测功器的励磁电流，从而可以精确模拟实际工况加载。

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