The solar wing is a vital energy component of spacecraft. It often faces challenges from vibrations and deformations during orbit, impacting spacecraft pointing accuracy and operational performance. To address these issues, a novel actuation method based on embedded piezoelectric actuator (EPA) is proposed in this study, which overcomes the technical difficulties of large additional mass and volume, and low control effectiveness. Firstly, a sandwich stacked EPA is meticulously designed and embedded into the connecting rod based on comprehensive analysis. Secondly, a novel modeling using the transfer matrix method improves the computational accuracy and the evaluation efficiency. Finally, a prototype of the EPA is fabricated, and the measurement system is constructed. The correctness of the modeling and the feasibility of the design are verified by case studies. The applications of the EPA for active vibration control are verified by additional case studies of the connecting rod and the scaled solar wing prototype, respectively. The results reveal the amplitude reduction rates at the natural frequency are 97.36% and 97.48% in the XOZ plane and YOZ plane, respectively, with residual disturbances limited to only 0.03 mm. The exemplary outcomes solidify the exceptional performance of the proposed embedded piezoelectric actuation method for the active vibration control of solar wings. This novel method holds great promise for enhancing spacecraft stability and performance.

中文翻译：

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用于增强太阳翼振动控制的嵌入式压电驱动方法


太阳翼是航天器的重要能源部件。它经常面临在轨期间振动和变形的挑战，影响航天器的指向精度和运行性能。针对这些问题，本文提出了一种基于嵌入式压电执行器（EPA）的新型驱动方法，克服了附加质量和体积大、控制效果低的技术难点。首先，在综合分析的基础上，精心设计了三明治堆叠式EPA，并将其嵌入到连杆中。其次，使用传递矩阵方法的新颖建模提高了计算精度和评估效率。最后，制作了EPA样机，并构建了测量系统。通过实例验证了建模的正确性和设计的可行性。 EPA 在主动振动控制方面的应用分别通过连杆和缩放太阳能翼原型的附加案例研究得到了验证。结果表明，XOZ平面和YOZ平面的固有频率振幅衰减率分别为97.36%和97.48%，残余扰动仅限制在0.03 mm。示例性结果巩固了所提出的用于太阳翼主动振动控制的嵌入式压电驱动方法的卓越性能。这种新颖的方法对于提高航天器的稳定性和性能具有广阔的前景。