Nonlinear analysis and control of turbocharged diesels

Abstract

The major objectives of this paper are to analyze and model, control and optimize advanced diesels with optimal electronic fuel systems in order to improve fuel economy and reduce emission, guarantee the desired performance and increase service life, etc. Using a nonlinear mathematical model developed, a spectrum of problems in nonlinear analysis, control, and optimization are solved. In particular, using a complete mathematical model, the torque production features are studied. To inject the fuel into the cylinders, advanced fuel systems should be used to guarantee a spectrum of requirements to optimize the diesel performance. Thorough analytical results are performed, and novel control algorithms are designed and tested. 0-7803-5446-X/99 $10.00 0 1999 IEEE

Improving Computational Efficiency of Prediction in Model-based Prognostics Using the Unscented Transform

“…where L(x) is the inductance of the solenoid (Lyshevski, Sinha, & Seger, 1999;Rahman, Cheung, & Lim, 1996).…”

“…where u(t) is the applied voltage, and R is the coil resistance (Lyshevski et al, 1999;Rahman et al, 1996;Szente & Vad, 2001). The voltage u(t) is the only external input considered here, i.e.,…”

“…where the c subscript denotes lumped parameters for the core and armature, µ 0 is the permeability of air, and A g is the effective cross-sectional area of the air gap (Lyshevski et al, 1999). Therefore, the inductance is given by…”