Chen LeuJen, Kim Seong Heon, Lee Alfred K H, de Lozanne Alex
Department of Physics, University of Texas, Austin, Texas 78712, USA.
Rev Sci Instrum. 2012 Jan;83(1):013708. doi: 10.1063/1.3680082.
We describe a new type of circuit designed for driving piezoelectric positioners that rely on the stick-slip phenomenon. The circuit can be used for inertial positioners that have only one piezoelectric element (or multiple elements that are moved simultaneously) or for designs using a sequential movement of independent piezoelectric elements. A relay switches the piezoelectric elements between a high voltage source and ground, thus creating a fast voltage step followed by a slow ramp produced by the exponential discharging of the piezoelectric elements through a series resistor. A timing cascade is generated by having each relay power the next relay in the sequence. This design is simple and inexpensive. While it was developed for scanning probe microscopes, it may be useful for any piezoelectric motor based on a fast jump followed by a slow relaxation.
我们描述了一种新型电路，该电路设计用于驱动依赖于粘滑现象的压电定位器。该电路可用于仅具有一个压电元件（或同时移动的多个元件）的惯性定位器，也可用于采用独立压电元件顺序移动的设计。一个继电器在高压源和地之间切换压电元件，从而产生一个快速的电压阶跃，随后是压电元件通过串联电阻指数放电产生的缓慢斜坡。通过让每个继电器为序列中的下一个继电器供电来产生定时级联。这种设计简单且成本低廉。虽然它是为扫描探针显微镜开发的，但它可能对任何基于快速跳跃后跟缓慢弛豫的压电电机都有用。
