以单连杆弹性臂动力学模型为基础讨论转速对频率、振幅的影响，得出了动力刚化的机理，并对其是否考虑动力刚化效应时进行了数值仿真比较与分析。
The dynamic rigidity mechanism is obtained by discussing the effect of rotational speed of single connecting rod elastic arm on frequency and amplitude on the basis of dynamic model.
应用这两种方法建立单连杆柔性机械臂系统动力学模型，模型中包含了机械臂的形状参数以及驱动器的参数。
The dynamic model of a single-link robotic flexible manipulator system which includes structure parameters and driver parameters was proposed.
门座式起重机分单臂架和四连杆两种类型，起重机的起升、变幅、回转和行走四大机构均采用交流变频调速，整机采用PLC控制，使用性能优越。
Portal crane sub frame and four-link arm two types, from the crane hoisting, luffing, slewing and walking four agencies ac frequency control, the machine USES PLC control, superior performance.
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