... 29 12 2011 compressors fault diagnosis fuel systems internal combustion engines mechanical engineering computing pressure sensors signal processing modeling engine exhaust pressure estimation model-based diagnostics fault detection isolation In the past, various...

...Tiebao Yang; Xiang Chen Feedback control has been pursued to stabilize the bifurcated operating solution near the rotating stall point in axial-flow compressors. These controllers can extend the stable operating range and hence improve engine performance. However, the local L 2 gain...

... applied in a Stirling cycle compressor. The sinusoidal variations in time constant are tracked properly using the new technique, but the linear Kalman filter fails to do so. Both model validation and thermodynamic laws confirm that the new technique gives unbiased estimates and that the assumed...

... manifolds. Specifically, the EVC affects the AFR directly through the captured F cyl and indirectly through p i (from EVC to p e to turbine speed to compressor flow to p i ). However, p i cannot capture the fast interaction between the EVC and AFR and thus, p...

... S k − 1 x the engine will be driven asymptotically to x k + 1 d ; it will remain in this state as long as the reference state remains unchanged as illustrated in Fig. 2 . Finally, we remark that the assumption on the compressor and turbine efficiency is common...

... on the air and hydrogen feed, flow and pressure regulation, and heat and water management. In this paper, we develop a dynamic model suitable for the control study of fuel cell systems. The transient phenomena captured in the model include the flow and inertia dynamics of the compressor, the manifold filling...

...Ali Tahmasebi; Xiang Chen Feedback control has been pursued to address the rotating stall problem in axial flow compressors in order to extend the stable operating range and to improve engine performance. These controllers guarantee the stability of the bifurcated operating solution near the stall...

...B. J. Huang; Y. C. Chen This paper presents results of an investigation on the system dynamics and the controller design of a linear compressor for stroke and frequency adjustment. A system dynamics model was derived and identified experimentally. A control system was designed based on the system...

...MingQing Xiao; Tamer Bas¸ar The paper studies the behavior of multi-mode systems of the Moore-Greitzer model. Its main result is the existence of a parameterized nonlinear state feedback controller which stabilizes the system to the right of the peak of the compressor characteristic...

...Der-Cherng Liaw; Jeng-Tze Huang Issues of the robust stabilization for axial-flow compressor dynamics with respect to the uncertainty in axisymmetric characteristics are presented. This is achieved by the design of sliding mode controllers. By assuming an actuation directly modulating the mass flow...

...Hsin-Hsiung Wang; Miroslav Krstic´; Michael Larsen Frequencies of higher-order modes of fluid dynamic phenomena participating in aeroengine compressor instabilities far exceed the bandwidth of available (affordable) actuators. For this reason, most of the heretofore experimentally validated control...