Liang, CongXu, XingAuger, Daniel J.Wang, FengWang, Shaohua2023-01-152023-01-152023-09Liang C, Xu X, Auger DJ, et al., (2023) Efficient mode transition control for DM-PHEV with mechanical hysteresis based on piecewise affine H∞ strategy. IEEE Transactions on Transportation Electrification, Volume 9, Issue 3, September 2023, pp. 4366-43792332-7782https://doi.org/10.1109/TTE.2023.3235012https://dspace.lib.cranfield.ac.uk/handle/1826/18960A dual motor plug-in hybrid electric vehicle (DM-PHEVs) can achieve higher power and better fuel economy through Mode Transition Process (MTP) from pure electric to hybrid driving modes. In a DM-PHEV, the MTP is more complex, with more components to be managed. As well as being a combination of a discrete stage transition and a system with continuous state evolution, the several actuators exhibit significant discontinuous dynamics and different characteristics from each other, particularly mechanical hysteresis. This makes the design of a coordinated controller challenging. In this paper, a two-layer coordinated control strategy is proposed. The upper layer is based on a stage-dependent piecewise-affine (PWA) model which is used to develop a PWA-static output feedback H ∞ strategy (PWA-SOF). The lower layer is based on a simplified actuator lag model, and a H ∞ design technique is used to develop a robust torque controller that reduces the effect of mechanical hysteresis. The resulting strategy is described as a piecewise-affine modified static output feedback (PW-MSOF) algorithm. (While the individual elements are not novel contributions to control theory, the combination and application to this problem is.) Performance indices are defined and hardware-in-the-loop (HiL) test shows that the new controller can effectively suppress the vehicle jerk without adversely affecting other aspects of system behaviour.4366-4379enAttribution-NonCommercial 4.0 Internationalhttp://creativecommons.org/licenses/by-nc/4.0/Mode transition processPWAMechanical hysteresisPHEVH∞Article93