论文部分内容阅读
建立了大位移压电固体作动筒（Ｐｉｅｚｏｅｌｅｃｔｒｉｃ ｉｎｄｕｃｅｄ ｓｔｒａｉｎ ａｃｔｕａｔｏｒ， ＰＺＴ ＩＳＡ）的动力学模型。探讨了压电固体作动筒在结构应用中的力学驱动模型，研究了压电作动筒和结构之间的驱动传递关系，以及在结构应用中获得最大输出位移和最大作用力的匹配关系；研究了利用压电作动筒驱动直升机伺服襟翼的一种初步构想以及机械放大机构，用于替代现有的液压装置，对旋翼进行主动减震降噪。同时在不同的频率及负载下，对压电作动筒的驱动性能进行了实验，并作了讨论。结论表明：利用压电作动筒作为直升机伺服襟翼控制的驱动器件，可以实现对伺服襟翼的主动变形及振动控制。
A dynamic model of Piezoelectric induced strain actuator (PZT ISA) was established. The mechanical driving model of piezoelectric solid actuator in structural application was discussed. The driving transmission relationship between piezoelectric actuator and structure was studied. The matching relation between maximum output displacement and maximum force was obtained. A preliminary idea of using a piezoelectric actuator to drive a helicopter servo flaps and a mechanical amplification mechanism are studied. The hydraulic actuators are used to replace the existing hydraulic devices to actively reduce vibration and noise of the rotor. At the same time under different frequencies and loads, the driving performance of the piezoelectric actuator was tested and discussed. The conclusion shows that the piezoelectric actuator can be used as the servo control device of helicopter servo flaps to realize the active deformation and vibration control of servo flaps.