Active speed-tuning control in the process of gearshift for heavy PSHEV

The active speed-tuning control in the process of gearshift can ensure the ideal gear-shifting quality and the driving performance. For parallel and series hybrid electric vehicle (PSHEV), the control is more difficult because of the multi-powers. The active speed-tuning control algorithm used to reduce the impingement of components and the duel-loop control algorithm was presented in this paper. The outer control loop based on the increment PID algorithm controlled the speed error between the active and passive components; the inner control loop based on the fuzzy control logic controlled the regulation of the engine, electric motor and the generator. The online tests on the bench were carried on using the ECU of PSHEV. The test results indicated that the active speed-tuning control algorithm could control the components working harmoniously and ensure a fast and smooth gearshift.