Development Of Control Strategy And Software For Powertrain System Of Pure Electric Automobiles

The energy management and driving control strategy of electric automobile arevery important, because they decide the automobile's energy efficiency, safety andreliability. This paper's work is supported by the national "863" project, developmentof power train control system of XL pure electric automobile. The paper provides an overview of Advanced Vehicle Simulator including itsfunction, construction and simulation methods. Based on the Advisor model, somemodels including the vehicle, the motor, the battery, and the transformation modelsare set up. The acceleration and power abilities have been simulated. A detail investigation on control strategy and software are accomplished in thispaper. All operating modes, such as starting, stop, pre-charge, running, faultprotection, LOS mode, etc, are controlled by a special strategy. Through a softwareflag, all running mode can be changed from one to another in all automobile runningconditions. A protection method is used to avoid the shut down. The automobileacceleration ability and driving feeling are improved by optimization of accelerationpedal input curve, the power protection strategy are used in the energy management,and default cases can be processed and error code is shined in an instrument panel. Anew regenerative braking control strategy is presented. The results of road test show that the whole system is successfully.