Browse Publications Technical Papers 2003-01-3275
2003-10-27

Modeling and Simulation of a Fuzzy Logic Controller for a Hydraulic-Hybrid Powertrain for Use in Heavy Commercial Vehicles 2003-01-3275

The work in this paper presents a technique for controlling a hybrid powertrain using fuzzy logic. Work has been carried out in this area previously for the case of hybrid-electric vehicles (HEV's), but the case for hydraulic-hybrids presents several different challenges. This paper describes the overall project on the hydraulic regenerative system, and its method of assisting braking and acceleration. The Fuzzy Logic Controller (FLC) for the powertrain is then introduced, along with the rule base and general strategy for operation. Thirdly, a description of the fuzzy controller's implementation into the NREL's ADVISOR is made, along with estimates of potential gains. Fourth, a discussion regarding the implementation of the FLC into the actual vehicle's control unit is made, with some suggestions for future work.

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