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照字面看可以看成流量型提升阀么？2 y" E, n/ Q# w* T C" B! Q# Q; m
出去在此，好像是充当伺服阀的角色。
$ k& `* X7 M" }0 K7 p# sMetering poppet valves are being developed to regulate flow in place of more common% s' ~% S7 ?4 a' j9 b
spool valves. This is due to certain advantages offered by metering poppet valves.
3 Q( m; z: e+ AHowever, these advantages cannot be fully realized until control design challenges. \2 A O0 r; S
involving stability and performance are solved. A design for a two-stage metering poppet ^7 S8 G1 t6 ^) R _
valve is presented. For control, several researchers have used feedback linearization to9 d4 ^2 M& d2 }+ `/ ^, u
cancel part of a hydraulic system’s nonlinearities in spool valves. In this work,: a, u% z, f) P6 c. s7 f' F
nonlinearities are cancelled in the input-output relationship of the metering poppet valve.
# a4 f/ z. t/ A, X) k* E5 p! TReference 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