Control Strategy of Pedelec based on Active Impedance Control

Abstract

Nowadays the power-assisted strategies for pedelecs cannot effectively adjust to load changes on the road automatically This study applies impedance control to pedelecs and propose an active power-assisted strategy based on impedance control This strategy can meet the requirements needed to adjust load changes automatically and reduce the pedaling impedance effectively such that a rider’s pedaling comfort is improved These requirements were met while maintaining relevant mechanisms and legal restrictions of the mid-drive pedelec aimed for commercial pedelecs This thesis used the Giant Quick- E+ 2018 pedelec for this study Without changing the hardware of this product the physical modeling and analysis is first conducted then a new control architecture is proposed and followed by a power-assisted strategy Secondly the new functions mentioned above were realized including the torque control of the assist motor by a microcontroller Stm32 Finally the Tacx Neo 2T Smart an indoor fitness simulation platform is used to evaluate various road load changes during outdoor riding to verify the effectiveness of the control architecture and power-assisted strategy

Date of Award	2020
Original language	English
Supervisor	Mi-Ching Tsai (Supervisor)