Output dynamic control of a late model sustainable energy automobile system with nonlinearity

Abstract

Air-liquid pressurization convertor has been applied in energy boosting which is widely used in sustainable energy automobile. In this article, output dynamic control method is analyzed by model simulation and experimental validation to set foundation for optimization, in which the pneumatic and hydraulic nonlinear combination equations, total nonlinear frictions on pistons, and load nonlinear equilibrium equation are considered. Moreover, influences on output dynamic control characteristics of the late automobile model with nonlinearity are studied. The conclusion can be made as follows: first, the built model is effectively verified by comparison of experimental and simulation results. Second, as one of the key power system parameters, longer piston stroke will lead to better output dynamic property within a certain limit. Third, area ratio is considered to be approximately 8, which can avoid the unsteadiness of the output dynamic characteristics. Furthermore, suitably bigger orifice will greatly promote the characteristic property of the air-liquid pressurization convertor. Finally, under the condition of this article, input pressure can be set to 0.65 MPa to obtain a better power system combination property. This study can provide reference for the optimization of dynamic characteristics of the sustainable energy automobile.