TY - GEN
T1 - Digital feed-forward control of gas mixture with high-speed valve switching
AU - Martin, Christopher R.
AU - Batzel, Todd D.
N1 - Publisher Copyright:
Copyright © 2018 ASME.
PY - 2018
Y1 - 2018
N2 - To address a need for digital gas mixture control, this paper presents a valve design for digital gas flow rate control without a feedback measurement. This design uses a transonic nozzle to regulate a constant flow rate with partial pressure recovery and a pulse-width modulation scheme to actuate flow rate without needing precise location of a throttle body. Experimental results from a prototype are presented showing linear variation of flow with respect to duty cycle and switching frequency consistent with the valve's theory of operation. Outliers are especially prominant as frequency is varied, and are believed to be due to acoustic effects in the supply line.
AB - To address a need for digital gas mixture control, this paper presents a valve design for digital gas flow rate control without a feedback measurement. This design uses a transonic nozzle to regulate a constant flow rate with partial pressure recovery and a pulse-width modulation scheme to actuate flow rate without needing precise location of a throttle body. Experimental results from a prototype are presented showing linear variation of flow with respect to duty cycle and switching frequency consistent with the valve's theory of operation. Outliers are especially prominant as frequency is varied, and are believed to be due to acoustic effects in the supply line.
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U2 - 10.1115/MSEC2018-6388
DO - 10.1115/MSEC2018-6388
M3 - Conference contribution
AN - SCOPUS:85055010686
SN - 9780791851371
T3 - ASME 2018 13th International Manufacturing Science and Engineering Conference, MSEC 2018
BT - Manufacturing Equipment and Systems
PB - American Society of Mechanical Engineers (ASME)
T2 - ASME 2018 13th International Manufacturing Science and Engineering Conference, MSEC 2018
Y2 - 18 June 2018 through 22 June 2018
ER -