The design of a control law for rotating stall in an axial compressor

Craig A. Buhr, Matthew A. Franchek, Sanford Fleeter

Research output: Contribution to conferencePaper

Abstract

Presented in this paper is the design of a control law for rotating stall in axial compressors. The controller design is executed in two primary phases. In the first phase, an input-output model of the compressor is developed to recover the frequency response of the spatial mode dynamics. The representation of the compressor dynamics in this form facilitates the controller design process. In the second phase, a feedback controller having the structure Ui = Kieiβiyi is designed to maximize the stability of the ith spatial mode where yi denotes the ith spatial harmonic. Maximum performance is limited by the output saturation of the air injectors. The design of Ki and βi is realized using a feedback control notion referred to as sensitivity. Sensitivity is a measure of the transmissibility of the disturbances which lead to rotating stall. The controller is designed for an analytical compressor model comprised of nonlinear ordinary differential equations (NODE). These NODEs are derived from a reduction of the Moore-Greitzer partial differential equations (PDE). The paper concludes with a discussion of designing dynamic controllers which may achieve performance beyond the control law Ui = Kieiβiyi..

Original languageEnglish (US)
DOIs
StatePublished - 1998
Event34th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, 1998 - Cleveland, United States
Duration: Jul 13 1998Jul 15 1998

Other

Other34th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, 1998
CountryUnited States
CityCleveland
Period7/13/987/15/98

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Control and Systems Engineering
  • Aerospace Engineering

Fingerprint Dive into the research topics of 'The design of a control law for rotating stall in an axial compressor'. Together they form a unique fingerprint.

Cite this