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Active Control of an Axial Flow Compressor via Pulsed Air Injection

D'Andrea, Raffaello and Behnken, Robert L. and Murray, Richard M. (1996) Active Control of an Axial Flow Compressor via Pulsed Air Injection. California Institute of Technology . (Unpublished) http://resolver.caltech.edu/CaltechCDSTR:1996.CIT-CDS-95-029

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Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechCDSTR:1996.CIT-CDS-95-029

Abstract

This paper presents the use of pulsed air injection to control the onset of rotating stall in a low-speed, axial flow compressor. By measuring the unsteady pressures near the rotor face, a control algorithm determines the magnitude and phase of the first mode of rotating stall and controls the injection of air in the front of the rotor face. Experimental results show that this technique slightly extends the stall point of the compressor and eliminates the hysteresis loop normally associated with rotating stall. A parametric study is used to determine the optimal control parameters for suppression of stall. Analytic results---using a low-dimensional model developed by Moore and Greitzer combined with an unsteady shift in the compressor characteristic to model the injectors---give further insights into the operation of the controller. Based on this model, we show that the behavior of the experiment can be explained as a change in the bifurcation behavior of the system under nonlinear feedback. A higher fidelity simulation model is then used to further verify some of the specific performance characteristics that are observed in experiments.


Item Type:Report or Paper (Technical Report)
Group:Control and Dynamical Systems Technical Reports
Record Number:CaltechCDSTR:1996.CIT-CDS-95-029
Persistent URL:http://resolver.caltech.edu/CaltechCDSTR:1996.CIT-CDS-95-029
Usage Policy:You are granted permission for individual, educational, research and non-commercial reproduction, distribution, display and performance of this work in any format.
ID Code:28014
Collection:CaltechCDSTR
Deposited By: Imported from CaltechCDSTR
Deposited On:18 Oct 2002
Last Modified:26 Dec 2012 14:28

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