Modeling and simulation of the proportional valve control system for the turbocharger

The key technology of the advanced variable nozzle turbocharger is the proportional valve control system. In this article, the fundamental dynamic equations of the proportional valve control system for the turbocharger are deduced by analyzing the principle of operation, the mathematical model of the control system is established, and the control system is simulated by using the MATLAB/Simulink. The static characteristics and dynamic characteristics are gained by analyzing the control system, which satisfy the rotation angle requirement of the turbocharger vanes, and rationality of the control system modeling and validity of the proportional valve parameters design for the turbocharger are ensured after the simulation curve and the subsequent experiment curve about the rotation angle with the input current are compared.