On-Line Controller for Fuel Consumption on Spilt-Type Hybrid Electric Vehicle*

This paper proposes a controller used by an extremum seeking (ES) algorithm with semi-optimal controller gains for a hybrid electric vehicle (HEV) system. The semi-optimization gains connect at each output of sample controllers that are given by benchmark problem in advance. These gains are decided according to the approximate convex on fuel economy function via each gains. The target engine speed of EMI controller, ω*, is perturbed with the ES algorithm based on fuel economy and State of Charge (SOC). Furthermore, the proposed algorithm switches controller depending on SOC for restraining of the decline of SOC. The sample controllers have four units, and each unit controller controls the driving of HEV. The sample controllers can drive the HEV. For showing the validity of our proposed controller, fuel economies of the proposed controller and sample controller are compared by simulator for this benchmark. While the fuel economy achieved by the sample controller is 41.44 mpg, the final fuel economy on the proposed method is almost 59.29 mpg, and the final SOC is 64.45%. The performance of fuel economy can be improved by almost 43% compared to the sample controller.