ACTA AERONAUTICAET ASTRONAUTICA SINICA >
Experimental Investigation of Control with Tip Air Injection in Axial Flow Compressor
Received date: 2013-01-04
Revised date: 2013-02-26
Online published: 2013-03-06
Supported by
National Natural Science Foundation of China (51010007, 51176188, 51006099)
Tip air injection is proven to be able to enhance effectively the stall margin in axial flow compressors. It is here selected as a control method, and a proportional electromagnetic valve is adopted to realize the real-time adjustment of injected mass flow, which can take full advantage of the stability enhancement ability from micro injection to macro injection. A corresponding DSP (Digital Signal Processing) controller is designed to realize signal acquisition, algorithm analysis and output of the control signal. In the DSP controller, a cross-correlation analysis is performed to detect the pre-stall inception signal. Experiments are performed in a single-rotor axial flow compressor. The experimental results demonstrate that the control with tip air injection based on the proportional electromagnetic valve and DSP controller not only achieves the same stability enhancement as the steady tip air injection, but also saves a considerable quantity of injected energy. This method has a good application prospect.
LI Jichao , LIN Feng , TONG Zhiting , NIE Chaoqun . Experimental Investigation of Control with Tip Air Injection in Axial Flow Compressor[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2013 , 34(11) : 2464 -2471 . DOI: 10.7527/S1000-6893.2013.0130
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