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Torque coordinated control of no-power interruption gear shifting for multimode hybrid electric vehicles equipped with a two-speed dedicated hybrid transmission.

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Bibliographic Details
Title: Torque coordinated control of no-power interruption gear shifting for multimode hybrid electric vehicles equipped with a two-speed dedicated hybrid transmission.
Authors: Liu, Wei1 (AUTHOR), Wang, Ruochen1 (AUTHOR) wrc@ujs.edu.cn, Ding, Renkai2,3 (AUTHOR), Zhou, Yazhou1 (AUTHOR), Sun, Dong1 (AUTHOR), Ye, Qing3 (AUTHOR)
Source: Journal of Vibration & Control. Jul2026, Vol. 32 Issue 13/14, p3512-3526. 15p.
Subjects: Hybrid electric vehicles, Gear shifting in automobiles, Sliding mode control, Torque control
Abstract: This paper investigates the power interruption and torque impact issues of a multimode hybrid electric vehicle (HEV) equipped with a dedicated hybrid transmission (DHT) during gear shifting. Such interruption and impact can significantly result in a deterioration in power performance and comfort of the vehicle. First, the main challenges in the uninterrupted power shifting process are analyzed, and a multi-phase dynamic model of the shifting process is established. Then, drawing on the configuration characteristics of the DHT-HEV power system, a shifting control architecture that maintains power continuity is proposed. Based on this control architecture, a finite time disturbance observer (FTDO) is designed to estimate the random torque disturbances of the engine during the torque phase of shifting process, and a nonsingular fast terminal sliding mode controller (NFT-SMC) is developed to dynamically coordinate the output torque of engine and traction motor (TM). The simulation and bench test results show that this method not only achieves non-power interruption shifting, but also effectively suppresses torque impact during shifting and improves driving comfort. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:This paper investigates the power interruption and torque impact issues of a multimode hybrid electric vehicle (HEV) equipped with a dedicated hybrid transmission (DHT) during gear shifting. Such interruption and impact can significantly result in a deterioration in power performance and comfort of the vehicle. First, the main challenges in the uninterrupted power shifting process are analyzed, and a multi-phase dynamic model of the shifting process is established. Then, drawing on the configuration characteristics of the DHT-HEV power system, a shifting control architecture that maintains power continuity is proposed. Based on this control architecture, a finite time disturbance observer (FTDO) is designed to estimate the random torque disturbances of the engine during the torque phase of shifting process, and a nonsingular fast terminal sliding mode controller (NFT-SMC) is developed to dynamically coordinate the output torque of engine and traction motor (TM). The simulation and bench test results show that this method not only achieves non-power interruption shifting, but also effectively suppresses torque impact during shifting and improves driving comfort. [ABSTRACT FROM AUTHOR]
ISSN:10775463
DOI:10.1177/10775463251330478