History of compressors - Automatic Control

Three-state Moore-Greitzer compressor model
d
dt φ=−ψ+3
φ)3
φ+1−(1+ −3R(1+ φ)
2 2
d 1
ψ=
dt β2(φ−u) d
dt R=−σR2 − σR(2φ+ φ 2 ),R≥0
y= ψ
here φ and ψ have the physical meaning being deviations of the
averaged flow and the pressure from their nominal mean
values, respectively.
The stall R cannot be measured and used for feedback design.
Alina Rubanova History. 19/ 24
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