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照字面看可以看成流量型提升阀么？5 l4 {. R9 Z) ~6 v s$ [
出去在此，好像是充当伺服阀的角色。
$ F+ Q" |8 C% V _( S! V+ M h% N9 xMetering poppet valves are being developed to regulate flow in place of more common% A& R$ o3 \# J
spool valves. This is due to certain advantages offered by metering poppet valves., R$ i4 e2 F9 C! m
However, these advantages cannot be fully realized until control design challenges+ }- r" ?- g4 R
involving stability and performance are solved. A design for a two-stage metering poppet3 e- t! ], |( ^! m/ c
valve is presented. For control, several researchers have used feedback linearization to
5 L% j0 f* f" y' Icancel part of a hydraulic system’s nonlinearities in spool valves. In this work,. N, G) G( T3 W: E# \5 b( b0 J% s
nonlinearities are cancelled in the input-output relationship of the metering poppet valve.
A2 w0 _! v( `% v, {, j0 v8 ZReference tracking of the flow is analyzed. |
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发表于 2008-1-10 16:07:34
楼主
发表于 2008-1-20 15:02:55