用于微隔振平台的压电致动器设计与研究

为实现微隔振平台的自适应控制,选择具有驱动和传感功能的压电陶瓷设计了一种驱动器.从其本构关系出发,对单片压电陶瓷进行了分析,在此基础上建立了压电堆动态模型.设计出的压电致动器,不仅具有驱动与传感功能,而且具有简单、易加工等特点,然后通过试验研究,对压电致动器的预压进行了标定,并选择了合适的预压弹簧,完成了对致动器的成品化.最后对压电致动器的迟滞、线性、重复性进行了初步研究,为微隔振平台的控制打下了基础.

Design and Research on the Piezoceramic Active Member for Micro-vibration Isolation Plate

Choose a new type of intelligent material-piezoelectric with the functions of sensation and actuation and designed an actuator for the serf-adaptive control of micro-vibration isolation plate. Based on the fundamental equation of the piezoelectric, we built a model of piezoelectric stack and designed a piezoelectric actuator which has the ability of driver and sensor and simple, manufacture easily after analyzed one chip of piezoelectric. Through the experimental research on the piezoelectric stack, demarcated the pre-pressure and choose a proper spring, which consisted the finished product. Finally, get out the valuation of hysteresis, linearity and repeatability. Support the control of micro-vibration isolation plate.