In this paper, we present our study on a piezoelectric gas controller based on dual-bimorph piezoelectric valve . The bimorph structure was designed to be a one-dimensional plate to reduce the overall size of the piezoelectric actuator. A rod was placed at the center of a pair of piezoelectric bimorphs, and the piezoelectric valve was slightly compressed to create a pre-stressed condition. These two piezoelectric bimorphs were synchronized to push the cylinder valve to initiate valving process. The performances of this system were studied and evaluated, including frequency response, pressure drop, and flow rate. The piezoelectric actuator was fabricated by attaching two 5 mm wide, 50 mm length and 0.4mm thick bimorph PZT together. The poling direction of the two PZT layers was in opposite direction to create a serial bimorph. PMMA cylinder were created by using a CO2 laser cutter. The level of the valving movement was studied under a different driving voltage and operating frequency. Preliminary finding showed that a 0.103mm displacement at 1 Hz can be achieved and the developed piezoelectric valve can be used to control output pressure.
Cheng-Yin Huang, Yu-Hsiang Hsu, and Chih-Kung Lee, "Piezoelectric gas flow controller based on dual-bimorph actuators," Proc. SPIE 10595, Active and Passive Smart Structures and Integrated Systems XII, 105951F (Presented at SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring: March 07, 2018; Published: 11 April 2018); https://doi.org/10.1117/12.2296768.
Conference Presentations are recordings of oral presentations given at SPIE conferences and published as part of the conference proceedings. They include the speaker's narration along with a video recording of the presentation slides and animations. Many conference presentations also include full-text papers. Search and browse our growing collection of more than 14,000 conference presentations, including many plenary and keynote presentations.
Study of self-shadowing effect as a simple means to realize nanostructured thin films and layers with special attentions to birefringent obliquely deposited thin films and photo-luminescent porous silicon