基于压电双晶片的气动高速开关阀研究  

Research on Pneumatic High Speed On-Off Valve Based on Piezoelectric Bimorph

作　　者：张秋伟 孙中圣[1] 黄新燕[1] ZHANG Qiuwei;SUN Zhongsheng;HUANG Xinyan(School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]南京理工大学机械工程学院SMC气动技术中心,江苏南京210094

出　　处：《压电与声光》2022年第5期758-764,共7页Piezoelectrics & Acoustooptics

摘　　要：基于智能材料驱动的高速开关阀具有比电磁高速开关阀更好的动静态特性。针对传统悬臂梁结构压电双晶片输出力较小的缺点,该文研究了一种基于压电双晶片的气动高速开关阀,提出了一种简支梁结构固定方式。借助COMSOL对压电元件流固耦合问题进行分析,优化了阀的关键结构参数,并对样机进行了实验研究。实验结果表明,阀的工作频宽达到280 Hz,在压差0.3 MPa的条件下,最大流量为30.7 L/min。The high-speed on-off valve driven by smart materials has better dynamic and static characteristics than the electromagnetic high-speed on-off valve.Aiming at the disadvantage of small output force of traditional cantilever structure piezoelectric bimorph,a pneumatic high-speed on-off valve based on piezoelectric bimorph is studied in this paper,and a simply supported beam structure fixing method is proposed.The fluid structure coupling of the piezoelectric elements is analyzed with the COMSOL.The key structural parameters of the valve are optimized,and the prototype is tested.The experimental result shows that the operating frequency bandwidth reaches 280 Hz,and the maximum flow is 30.7 L/min at the pressure differential of 0.3 MPa.

关 键 词：压电双晶片 气动高速开关阀 简支梁 COMSOL 流固耦合 

分 类 号：TM201[一般工业技术—材料科学与工程] TM203[电气工程—电工理论与新技术] TH138[机械工程—机械制造及自动化]