Development of a piezoelectric high speed on/off valve and its application to pneumatic closed-loop position control system
Development of a piezoelectric high speed on/off valve and its application to pneumatic closed-loop position control system
复制标题
压电高速开关阀的研制及其在气动闭环位置控制系统中的应用
DOI：
10.1007/s12206-019-0521-9
复制
发表时间：
2019-06-01
影响因子：
1.6
通讯作者：
Li, Yuyang
中科院分区：
文献类型：
--
作者：
Bruno, Niyomwungeri;Zhu, Yuchuan;Li, Yuyang
基于智能材料的高速开关阀的应用已显示出在流体动力系统中取代传统伺服阀和比例阀的潜力。本文研制了一种新型的压电叠层驱动气动高速开关阀，并对其进行了动力学研究。当上游表压为0.5兆帕时，该阀具有高达86 L/分钟的大流量。此外，为了研究这种新型高速开关阀在闭环控制系统中的应用能力，采用了一种PID控制器实现了一个实时位置控制系统。为了验证其可行性和有效性，在气动气缸上进行了大量的闭环轨迹跟踪实验。实验结果表明，该系统具有较好的跟踪性能。
The use of smart materials-based high speed on/off valve has exhibited the potential to replace traditional servo and proportional valves in fluid power systems. In this paper, a novel pneumatic high speed on/off valve driven by a piezoelectric stack actuator is developed and its dynamics are studied. For an upstream gauge pressure of 0.5 MPa, the valve exhibited a large flow rate of up to 86 L/min. Furthermore, to study the ability of this novel high speed on/off valve to be applied in closed-loop control systems, a real-time position control system is realized using a PID controller. In order to prove its feasibility and effectiveness, a number of closed-loop trajectory tracking experiments are conducted on a pneumatic cylinder. The system is proved feasible and the results demonstrate good tracking performance.