자동변속기 기반 하이브리드 자동차의 하향변속중 회생제동 제어 알고리즘 개발

In this paper, regenerative braking algorithm is proposed during down-shift for a 6-speed 2-shaft parallel HEV, which satisfies the demanded braking force and driving comfort. First, down-shift strategy is suggested during the braking by considering the re-acceleration performance. To maintain a driving comfort regenerative braking algorithm is developed considering a response characteristic of the electronic hydraulic brake. Using the electronic hydraulic brake hardware and HEV simulator, HILS is performed. From HILS, it is found that regenerative braking algorithm satisfies the demanded braking force and the driving comfort to evaluate the control performance during down-shift