基于波动法的框式结构功率流主动控制方法与实验研究

为了研究扰动影响下框式结构中的功率流传播与主动控制，首先采用波动方法建立了框式结构的动力学模型并获得了其在扰动下的精确动力学响应，进一步得到结构中传播的功率流，并以此为目标函数，优化得到了最优控制力的大小与相位，然后对结构施加最优控制力，实现了框式结构的功率流主动控制。对框式结构功率流主动控制方法进行了数值计算分析与实验验证。结果表明：采用波动方法计算框式结构的动力学响应精确可靠；通过数值计算与实验研究可知功率流主动控制可以明显降低框式结构全频域内的抖动，验证了基于波动方法功率流主动控制的正确性与有效性。

ACTIVE CONTROL METHOD OF POWER FLOW AND ITS EXPERIMENTAL VALIDATION FOR FRAME STRUCTURE BASED ON WAVE METHOD

To study power flow transmission and active control of the frame structure under the influence of disturbance, firstly, the kinetic model of frame structure is established by wave method and the accurate dynamic response is obtained, then power flow transmission of structure is determined. The power flow is used as the objective function, and we will get optimized control force magnitude and phase by optimization algorithm, which is applied to the frame structure. Ultimately, active control of power flow for frame structure is realized. Based on active control method of power flow for frame structure, the numerical analysis and experimental validation is made. The results show that the dynamic response results of frame structure by wave method are accurate and reliable; Active control method of power flow can efficiently reduce the jitter of the frame structure in the whole frequency domain by numerical calculation and experiment research, and it proves that active control of power flow by wave method is right and valid.