中文摘要：

在结构的振动主动控制中，采用自感知执行器能减小结构的质量和体积，真正实现同位控制。设计了一种基于时分复用解耦系统的压电自感知执行器，使压电元件在传感时隙内作为测量振动的传感器，在执行时隙内作为控制振动的执行器，在放电时隙内释放积累的驱动电荷。设计了开关时序脉冲用于控制3个时隙的切换。基于LabVIEW软件平台，采用正位置反馈控制算法，将时分复用结构的压电自感知执行器用于悬臂梁1阶模态的振动主动控制，实验结果表明达到了良好的控制效果。

英文摘要：

The self-sensing actuator can be used to decrease structural weight and volume, and to achieve true collocated control in the active structural vibration control. A new piezoelectric self-sensing actuator based on the time-division multiplex de-coupling system has been designed,in which the piezoelectric element served as a sensor to measure vibration in sensing timeslot,and as an actuator to suppress vibration in actuating timeslot,and to release the driving charges in discharge timeslot. The switch sequential pulse was designed and used to control the switching of the three timeslots. Based on LabVIEW software and with the positive position control algorithm,the first modal active vibration control of the cantilever beam was implemented by using time-division-multiplex piezoelectric selfsensing actuator. Experimental results showed that the good vibration control has been achieved.