本文针对桥式吊车系统提出了一种基于能量分析的自适应控制器。

In this paper, an energy-based adaptive controller is designed for an overhead crane system.

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焊接钢桥结构持续损伤至破坏的过程可以从两方面加以分析：一方面要考虑此过程中能量的耗散；另一方面要考虑此过程中焊接部位损伤负向激励。

For the behavior of structure fracture, the dissipation of energy and the damage of passive encourage should be taken into consideration in the course of dynamic damage.

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为此，以矩形压电微悬臂梁结构作为换能单元，通过对压电层等效电流源和单相桥式整流电路的理论及相关公式的推导，得出微能量功率的计算公式。

An energy harvesting structure based on rectangle piezoelectric microcantilever was set up and the process of energy transform from vibration to electric was generally analyzed.

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