Design and implementation of a new clamping force estimator in Electro-Mechanical Brake systems

Ki, Young-Hun; Lee, K. J.; Cheon, Jae-Seung; Ahn, Hyun-Sik

doi:10.1007/s12239-013-0081-4

Cited by 40 publications

(35 citation statements)

References 10 publications

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“…The caliper force is a function of the friction plate displacement, which is called a caliper characteristic curve. The caliper force can be indirectly estimated by measuring the friction plate displacement or the motor rotor angular displacement and while using the brake dynamics model, caliper characteristic curves, and estimation algorithms [26,27,52]. The braking process is divided into non-contact state and contact state, according to whether the friction plate and brake disc are in contact.…”

Section: Caliper Force/braking Force Estimationmentioning

confidence: 99%

“…The actual caliper force lags behind the friction plate displacement or motor angular displacement due to friction resistance, phase lag effect, elastic characteristics of friction plate, and hysteresis characteristics of mechanical components [17,52]. These hysteresis characteristics have significant effects on braking performance, such as braking distance, braking time and average deceleration [59].…”

Section: Estimation and Compensation Of Friction Forcementioning

confidence: 99%

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Review on the Development, Control Method and Application Prospect of Brake-by-Wire Actuator

Gong

Yan

et al. 2020

Actuators

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This paper reviews and summarizes the development, key technologies, and application of brake-by-wire (BBW) actuators. BBW is the technology orientation of future vehicle brake system. The main feature of BBW is to replace some of the mechanical and hydraulic components of traditional brake system with electronic control components, and use cables and wires to transmit energy and signals. BBW actuators have outstanding advantages, such as fast response, accurate control, and compact structure. They are easy to integrate with active safety functions and they are easily matched with the regenerative braking systems of electric vehicle. First, this paper summarizes the classification, characteristics, performance, and architecture of BBW actuators. Subsequently, the braking process regulation of vehicle is considered to be the main target, which is summarized from two aspects of actuator regulation and braking force distribution. The state estimation algorithm and control algorithm applied to these actuators are summarized and analyzed, and the development trend, challenges, and schemes of the braking force distribution are proposed. The development and research trend of braking force match strategies between the regenerative brake system and BBW system are also analyzed and summarized. The further electrification and intelligence of vehicle demand BBW's braking force control method and distribution method must have higher control accuracy, stronger robustness, and wider adaptability, and the effects on braking comfort and handling stability must be further discussed.Actuators 2020, 9, 15 2 of 24 new features [2,3]. The additional functions, such as ABS and ESP, require additional devices, such as high-speed solenoid valves, oil return pumps, and return lines. Therefore, the structure of hydraulic brake system is becoming increasingly complex, and the maintenance is also becoming more and more difficult [4,5]. At present, new energy vehicles, such as electric vehicles (EV), hybrid electric vehicles (HEV), and fuel cell electric vehicles (FCEV), are developing rapidly and are highly concerned by major automotive manufacturers. However, most electric vehicles still use hydraulic brake system. On the one hand, the electric vehicles cannot use vacuum boosters to provide auxiliary force. The electric hydraulic pump must first be used to increase the hydraulic pressure, and then delivers the high pressure to each wheel. The electric energy needs to be converted and then transmitted multiple times in this process, so the energy utilization efficiency is not high, and there is the potential danger of brake fluid leakage. On the other hand, the hydraulic brake system cannot accurately and independently regulate the braking force, so it cannot be well matched with the regenerative brake system of EV and HEV [6].Actuators 2020, 9, 15 2 of 24 hydraulic brake system is becoming increasingly complex, and the maintenance is also becoming more and more difficult [4,5]. At present, new energy vehicles, such as electric vehicles (EV)...

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Section: Caliper Force/braking Force Estimationmentioning

confidence: 99%

Section: Estimation and Compensation Of Friction Forcementioning

confidence: 99%

Review on the Development, Control Method and Application Prospect of Brake-by-Wire Actuator

Gong

Yan

et al. 2020

Actuators

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“…Also, the sensor has low accuracy in high temperature and structural issue. Clamping force algorithm has been studied in a lot of researches [1,2,4]. In previous papers, clamping force is expressed as a function of motor angle or displacement of brake pad [2].…”

Section: Clamping Force Estimationmentioning

confidence: 99%

Design of Feed-forward Controller with Stick-slip Friction Modeling in Electro-mechanical Brake System

2016

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Abstract. Electro-Mechanical Brake (EMB) is expected to be one of the future brake system. Feedback controller with sensor measuring is commonly used for control of EMB. However, this controller has some issues like delayed response and extra cost about sensor installation. In this paper, Feed-forward controller in EMB is proposed for solving these problems of feedback control. Also, it is very necessary to describe dynamical phenomenon of friction in actual EMB system. The actual EMB system shows stick-slip friction of mechanical parts which is difficult to model and apply to design of controller. This research is focused on exquisitely describing this stick-slip friction. In order to do this, the experiment about EMB is proceeded in the open loop system with the motor current command and data from the experiment is used for identification of model parameters during stiction. Then, parameters during slip is estimated in the closed loop system. Finally, developed friction model of EMB is proposed and it is utilized for design of feed-forward controller. Matlab Simulink is used for design of EMB simulation model and EMB test bench is utilized for experiment. Performance of proposed control system is compared with that of feedback control system.

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“…Vertical force between tire and ground is influenced by car quality and load transfer. In the coupled nonlinear mathematical model of ISEFB, the longitudinal braking force controlled by slip ratio is longitudinal force of wheels roughly; ℎ is hydraulic braking torque; and is electromagnetic braking torque on wheels [21,22]. The wheel dynamics model can be expressed aṡ…”

Section: Single Wheel Brake Modelmentioning

confidence: 99%

Nonlinear Coupling Characteristics Analysis of Integrated System of Electromagnetic Brake and Frictional Brake of Car

2015

Mathematical Problems in Engineering

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Since theoretical guidance is lacking in the design and control of the integrated system of electromagnetic brake and frictional brake, this paper aims to solve this problem and explores the nonlinear coupling characteristics and dynamic characteristics of the integrated system of electromagnetic brake and frictional brake. This paper uses the power bond graph method to establish nonlinear coupling mathematical model of the integrated system of electromagnetic brake and frictional brake and conducts the contrastive analysis on the dynamic characteristics based on this mathematical model. Meanwhile, the accuracy of the nonlinear coupling mathematical model proposed above is verified on the hardware in the loop simulation platform, and nonlinear coupling characteristics of the integrated system are also analyzed through experiments.

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Design and implementation of a new clamping force estimator in Electro-Mechanical Brake systems

Cited by 40 publications

References 10 publications

Review on the Development, Control Method and Application Prospect of Brake-by-Wire Actuator

Review on the Development, Control Method and Application Prospect of Brake-by-Wire Actuator

Design of Feed-forward Controller with Stick-slip Friction Modeling in Electro-mechanical Brake System

Nonlinear Coupling Characteristics Analysis of Integrated System of Electromagnetic Brake and Frictional Brake of Car

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