Unified Brake Service by a Hierarchical Controller for Active Deceleration Control in an Electric and Automated Vehicle

Yuliang Nie, Yahui Liu, Shuo Cheng, Mingming Mei and Lingyun Xiao
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Yuliang Nie: State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China
Yahui Liu: State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China
Shuo Cheng: State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China
Mingming Mei: State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China
Lingyun Xiao: China national institute of standardization, Beijing 100191, China

Energies, 2017, vol. 10, issue 12, 1-13

Abstract: Unified brake service is a universal service for generating certain brake force to meet the demand deceleration and is essential for an automated driving system. However, it is rather difficult to control the pressure in the wheel cylinders to reach the target deceleration of the automated vehicle, which is the key issue of the active deceleration control system (ADC). This paper proposes a hierarchical control method to actively control vehicle deceleration with active-brake actuators. In the upper hierarchical, the target pressure of wheel cylinders is obtained by dynamic equations of a pure electric vehicle. In the lower hierarchical, the solenoid valve instructions and the pump speed of hydraulic control unit (HCU) are determined to satisfy the desired pressure with the feedback of measured wheel cylinder pressure by pressure sensors. Results of road experiments of a pure electric and automated vehicle indicate that the proposed method realizes the target deceleration accurately and efficiently.

Keywords: unified brake service; hierarchical control architecture; active deceleration control; automated driving system; wheel cylinder pressure (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: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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