雙極性類鋸齒波壓電驅動器開發探討

The Study of Bipolar Sawtooth-Like Waveform Converter as PZT Driver

壓電材料之滯──滑效應設備取決於平台與支撐件材料的靜態和動態摩擦特性；它們不需要高精密機械元件，亦不受灰塵與其他擾動影響，廣泛地應用於壓電驅動位移裝置。單極性信號驅動壓電元件長期使用下會產生極化現象，而造成推動會有偏移現象，造成位移失準。為了解決壓電元件極化之疑慮，通常使用雙極性信號驅動壓電元件，利用電壓極性相反，可以抵銷極化現象。因此提出新型雙極性類鋸齒波驅動器開發探討，文中描述電路設計與測試結果，未來探針掃描顯微鏡與或其它穿隧掃描顯微鏡都可以使用上。 It does not require high-precision mechanical components, also free from dust and other disturbances because the apparatus with Stick-slip effect device depends on the platform and supports static and dynamic friction material characteristics for very wide application of piezoelectric displacement devices. Unipolar signal to drive the piezoelectric component under long-term use will produce polarization problem and cause displacement deviation. It is usually using the bi-directional signal to drive a piezoelectric components because the bi-directional signal with a voltage of opposite polarity can offset the polarization in order to solve doubts of polarized effect of piezoelectric components. Therefore, a bipolar sawtooth-like waveform converter as piezoelectric driver was presented. Circuit design and test results described in this article. This technique can be used by scanning probe microscope, or scanning tunneling microscope in the future.