Open AccessStudy on Flow Characteristics and Linearization of Pneumatic High-Speed On-off Valve
Author(s) -
Jiabin Yang,
Xiaoning Li
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1654/1/012063
Subject(s) - control theory (sociology) , linearization , volumetric flow rate , dead zone , flow (mathematics) , nonlinear system , mechanics , flow control valve , computer science , mathematics , control engineering , engineering , physics , artificial intelligence , oceanography , control (management) , quantum mechanics , geology
It is hard to model the dynamic flow rate of pneumatic high-speed on-off valve due to its dead zone and nonlinearity. The average opening ratio was proposed to describe the dynamic flow rate after systematically analyzing the spool action characteristics. The mathematical relationship between flow rate, frequency, and duty cycle was established. Experimental results show that the method can accurately reflect the dynamic flow characteristics. Finally, a piecewise linearization method is designed to make the flow rate proportional to the input.