...Hui Zhao; Jinfu Liu; Daren Yu This paper aims to develop an applicable nonlinear control technique for aeroengines. An approximate nonlinear model is presented and a rational identification procedure is given. Exact input-output feedback linearization can be easily performed on this model...

... deg, 3 deg, and 4 deg crank angle resolutions. Furthermore, based on the estimated IMEP, we controlled IMEP using a radial basis function network and linear feedback controller. As a result of the study, successful estimation and control were demonstrated through engine experiments. 15 12 2009...

... reference value under optimal spark timing operation. The aim of the present work is a comparison between different combustion phase indicators, focusing on the performance attainable by a feedback spark timing control, which uses the indicator as pilot variable. An extensive experimental investigation has...

... engine. In most of these tests, active control was implemented with closed-loop feedback between the observed pressure signal and the phase and gain of imposed fuel perturbations. In contrast, a number of recent papers have shown that open-loop fuel perturbations can disrupt the feedback between...

...P. S. Keogh; M. O. T. Cole This paper investigates the vibration characteristics of rotor displacement signals in a magnetic bearing system under conditions when rotor contact with auxiliary bearings is possible. Since these signals may be used for feedback control, it is necessary to determine how...

... of the burner and downstream of the flame in the combustion chamber (denoted as “Combustor”). AIC modulates secondary fuel that is injected into the combustion system to destroy the thermoacoustic feedback cycle as briefly outlined in the introduction. The effect of automodulated piloting...

...A. K. Chakrabarti; B. Bandyopadhyay The advent of electronic controllers in the field of gas turbine control has allowed the implementation of sophisticated control algorithms. This paper proposes one such method, to design a controller using piecewise constant periodic output feedback, which has...

... 2002 rotors turbines magnetic bearings frequency response dynamics modelling error analysis feedback Construction of rotordynamic models for turbomachinery is a reasonably mature engineering discipline. However, it is well known that many effects arise in the assembly of real...

...Stanley S. Sattinger; Yedidia Neumeier; Aharon Nabi; Ben T. Zinn; David J. Amos; Douglas D. Darling Described are sub-scale tests that successfully demonstrate active feedback control as a means of suppressing damaging combustion oscillations in natural-gas-fueled, lean-premix combustors...

... 01 Mar 1999 magnetic bearings feedback rotors controllers control systems A significant issue in the design of feedback controllers for any application is the ability to tolerate variability and unmodeled dynamics in the plant: magnetic bearing supported rotors are no exception...

...G. T. Flowers; G. Sza´sz; V. S. Trent; M. E. Greene State feedback controller designs allow for pole placement in an effective manner, but reduction of static offset is difficult. On the other hand, classical control methodology allows for the increase of system type and the elimination of static...