Multi-variable control of the GE T700 engine using the LQG/LTR design methodologyThe design of scalar and multi-variable feedback control systems for the GE T700 turboshaft engine coupled to a helicopter rotor system is examined. A series of linearized models are presented and analyzed. Robustness and performance specifications are posed in the frequency domain. The linear-quadratic-Gaussian with loop-transfer-recovery (LQG/LTR) methodology is used to obtain a sequence of three feedback designs. Even in the single-input/single-output case, comparison of the current control system with that derived from the LQG/LTR approach shows significant performance improvement. The multi-variable designs, evaluated using linear and nonlinear simulations, show even more potential for performance improvement.
Document ID
19870026144
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Pfeil, W. H. (General Electric Co., Aircraft Engine Business Group, Lynn MA, United States)
Athans, M. (MIT Cambridge, MA, United States)
Spang, H. A., III (GE Corporate Research and Development Center Schenectady, NY; MIT, Cambridge, MA, United States)