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照字面看可以看成流量型提升阀么？* C* h% f- E( h% z) V4 ~
出去在此，好像是充当伺服阀的角色。* l, J, y! y5 j: M( z6 s: K
Metering poppet valves are being developed to regulate flow in place of more common: T7 N# e' I E! }8 H, ?
spool valves. This is due to certain advantages offered by metering poppet valves." ~9 E! s1 p- `% E9 A P( s) R, N
However, these advantages cannot be fully realized until control design challenges- }/ ~/ b8 K b$ j4 h c% q6 q0 V5 j
involving stability and performance are solved. A design for a two-stage metering poppet
5 T$ c2 ^% [! c' [) ?4 u' z0 }4 l: ivalve is presented. For control, several researchers have used feedback linearization to. Q* R# r0 ^) C+ M' `
cancel part of a hydraulic system’s nonlinearities in spool valves. In this work,4 z! {- T& A0 |+ a7 o* c
nonlinearities are cancelled in the input-output relationship of the metering poppet valve.
7 ]( R" _! E/ t* N4 pReference 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