Control Strategy of Dual-Winding Motor for Vehicle Electro-Hydraulic Braking Systems

Taeho Jo, Kyoungjin Joo and Ju Lee
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Taeho Jo: Department of Electrical Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea
Kyoungjin Joo: SW2 Lab, Software Campus, Mando Corp, 21, Pangyo-ro 255beon-gil, Bundang-gu, Seongnam-si 13486, Korea
Ju Lee: Department of Electrical Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea

Energies, 2022, vol. 15, issue 14, 1-19

Abstract: The electro-hydraulic brake (EHB) system of a vehicle should operate normally under all circumstances to ensure automotive safety. This redundant system guarantees the minimum required performance in the event of a critical failure of the brake system. In this study, we propose a redundant motor control strategy for the EHB to fully realize a functional safety design. The EHB system is composed of two identical electronic control units (ECUs), a dual three-phase dual-winding permanent magnet synchronous motor (DW-PMSM), and hydraulic components to generate brake pressure through the movement of an actuator. First, we propose a method to acquire the necessary motor current for generating brake pressure. Second, we present an initial driving method for the DW-PMSM for achieving stability before generating the braking pressure that involves setting the actuator’s origin position without a position sensor. Lastly, we describe a redundant motor control strategy for continuous brake operation depending on whether each ECU experiences system failure. The experimental results showed the effectiveness and feasibility of the control strategy of the dual-winding motor for a functional safety design.

Keywords: redundant brake system; electro-hydraulic brake; motor control; pressure control; dual-winding permanent magnet synchronous motor; dual electronic control units; functional safety; automotive vehicle (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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