On active surge control of compressors using a mass flow observer
نویسندگان
چکیده
A globally exponentially stable (GES) observer for the mass flow in a compression system is proposed. Further, a previously proposed active surge control scheme is shown to be GES. This nonlinear control scheme employs the drive torque of the compressors drive unit as the control variable in an active surge control system. The controler is based on feedback from mass flow. It is desireable to avoid this measurement as it is both inaccurate and expensive. Using a nonlinear separation principle, the total system is shown to be globally asyptotically stable (GAS). The results are supported by simulations.
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