Application of HC9S12 microprocessor in integrated starter/generator of hybrid electric vehicle

Based on the MC68HC9S12DP256B micro controller, the control system of the integrated starter/generator (ISG) assembles for hybrid electric vehicles (HEV) were developed; the hardware and software of system are also designed. Meanwhile, the fuzzy logic control technology of the micro controller and control strategies of ISG system are proposed, and an application of the micro controller to the ISG assemble was introduced. Finally, some experiments have been carried out, the results show that the microprocessor is stable and reliable, and it is successful for the applications of fuzzy logic control function of the microchip and the designed control strategies in the hybrid ISG propulsion system.