In this paper, a novel continuous fiber reinforced piezoelectric composite (CFRPC) actuator is proposed to improve the stability and reliability of piezoelectric actuators. A piezoelectric driving structure composed of a cantilever beam and the CFRPC actuator is utilized to research the actuation performance of the CFRPC actuator. The expression of the equivalent moment for the CFRPC actuator is obtained using the equivalent load method and electro-mechanical coupling theory. Based on Euler-Bernoulli beam theory, the analytical expression of the deflection for the cantilever beam is derived. The accuracy of the obtained analytical expressions is demonstrated by finite element simulation as well as published experimental results. The actuation performance of the CFRPC actuator is investigated through the analytical expressions of the equivalent moment and deflection. The results show that the key parameters such as driving voltage, fiber volume fraction, cantilever beam height, actuator height, actuator length and actuator position have great influence on the actuation performance of the CFRPC actuator. The CFRPC actuator has good mechanical and electrical properties, and has a wide application prospect in the field of structural shape control.

为了提高压电致动器的稳定性和可靠性，本文提出了一种新型的连续纤维增强压电复合材料致动器。利用悬臂梁和CFRPC致动器组成的压电驱动结构来研究CFRPC致动器的致动性能。CFRPC执行器的等效力矩的表达式是使用等效载荷法和机电耦合理论获得的。基于欧拉-伯努利梁理论，推导了悬臂梁挠度的解析表达式。有限元模拟以及已发表的实验结果证明了所获得解析表达式的准确性。通过等效力矩和挠度的解析表达式研究了CFRPC执行器的执行性能。结果表明，驱动电压，纤维体积分数，悬臂梁高度，致动器高度，致动器长度和致动器位置等关键参数对CFRPC致动器的致动性能有很大影响。CFRPC执行器具有良好的机械和电气性能，在结构形状控制领域具有广阔的应用前景。