利用压电堆执行器实现卫星上发射车辆的主动振动控制
Active Vibration Control of Launch Vehicle on Satellite Using Piezoelectric Stack Actuator
AI总结：
本文提出了一种智能适配器概念，通过18个压电堆执行器实现卫星上发射车辆的主动振动控制，利用模态分析和模糊逻辑控制方法，验证了该系统的高强性和良好的鲁棒性与有效性。
摘要：
卫星在飞行的不同阶段会受到各种严重的振动影响。本文提出了一种智能适配器的概念，以实现卫星上发射车辆的主动振动控制。该智能适配器包含18个主动支架，每个支架的中间部分由压电堆执行器组成。本文进行了全面的概念设计，以说明设计参数、要求和哲学，这些是基于可靠性和耐久性准则，以确保所提出系统的成功功能，并详细讨论了所提出压电堆执行器的制造过程。通过应用达朗贝尔原理，推导了每个主动支架中压电堆执行器的耦合机电虚拟功方程，以计算一致的质量矩阵、刚度矩阵和载荷向量，使用有限元近似。进行了模态分析以表征智能适配器的固有特性，并提取系统的数学模型。利用模糊逻辑控制（三角隶属函数和加速度反馈）进行了主动振动控制分析。控制结果表明，所提出的卫星智能适配器配置，受益于其18个主动支架中的压电堆执行器作为元件，具有高强性和在卫星上发射车辆振动抑制方面的优异鲁棒性和有效性。
英文摘要：
Satellites are subject to various severe vibration during different phases of flight. The concept of satellite smart adapter is proposed in this study to achieve active vibration control of launch vehicle on satellite. The satellite smart adapter has 18 active struts in which the middle section of each strut is made of piezoelectric stack actuator. Comprehensive conceptual design of the satellite smart adapter is presented to indicate the design parameters, requirements and philosophy applied which are based on the reliability and durability criterions to ensure successful functionality of the proposed system, also fabrication process of the proposed piezoelectric stack actuator is discussed in detail. The coupled electromechanical virtual work equation for the piezoelectric stack actuator in each active strut is derived by applying D'Alembert's principle to calculate the consistent mass matrix, the stiffness matrix and the load vector using finite element approximation. Modal analysis is performed to characterize the inherent properties of the smart adapter and extraction of a mathematical model of the system. Active vibration control analysis was conducted using fuzzy logic control with triangular membership functions and acceleration feedback. The control results conclude that the proposed satellite smart adapter configuration which benefits from piezoelectric stack actuator as elements of its 18 active struts has high strength and shows excellent robustness and effectiveness in vibration suppression of launch vehicle on satellite.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
