Research on Integrated System Control Strategy of Regenerative Braking and Anti-Lock Braking System for Electric Vehicle

2012 ◽  
Vol 249-250 ◽  
pp. 596-603 ◽  
Author(s):  
Jun Wang ◽  
Jun Kui Qiao ◽  
Zhi Quan Qi ◽  
Bo Zhen Liu
Keyword(s):  
Control Strategy ◽  
Integrated System ◽  
System Control ◽  
Control Logic ◽  
Driving Cycles ◽  
Braking Torque ◽  
Braking Force ◽  
Regeneration Effect ◽  
Discharging Characteristic ◽  
Logic Threshold

Based on ABS System,a regenerative and pneumatic baking system was proposed,which can adjust pneumatic braking force precisely through ABS valve in order to guarantee the distribution of braking force. A control strategy using logic threshold was made,considering ECE regulation,control logic of ABS system,braking torque of motor and charging-discharging characteristic of battery. A co-simulation model was built with the platform of Simulink-AMESim and the simulation was performed under different braking intensity and driving cycles. The results indicate that the vehicle can achieve good braking regeneration effect with ensuring braking stability .Ratio of energy recycling can achieve 16.26% in London bus driving cycles.

Research on Electro-Mechanical Braking System Control of EV Based on Maximum Energy Recovery Strategy

2015 ◽  
Vol 740 ◽  
pp. 196-200
Author(s):  
Qing Nian Wang ◽  
Shi Xin Song ◽  
Shao Kun Li ◽  
Wei Chen Zhao ◽  
Feng Xiao
Keyword(s):  
Control Strategy ◽  
Influence Factors ◽  
Maximum Energy ◽  
Regenerative Braking ◽  
Force Distribution ◽  
System Control ◽  
Braking System ◽  
Power Battery ◽  
Braking Force ◽  
The Ideal

With the analysis of influence factors on regenerative braking in electro-mechanical braking system, and considering the power battery charging characteristics, a regenerative braking system control strategy for electric vehicle is researched in this paper. The models of the motor and the whole vehicle are built in AMESim. The control effects and the braking force distribution on front and rear wheels of the control strategy in an FTP-72 driving cycle are simulated and analyzed. The simulation results show that the control strategy could be utilized in the 4WD electric vehicles. The ideal braking force distribution on front and rear wheels and the high amount of recovery energy could be achieved.

Research on the Braking System Control Strategy of Hybrid Electronic Bus

2011 ◽  
Vol 148-149 ◽  
pp. 1231-1235
Author(s):  
Ji Shun Liu ◽  
Jun Li ◽  
Yong Sheng Zhang ◽  
Liang Chu ◽  
Liang Yao
Keyword(s):  
Control Strategy ◽  
Electronic Control Unit ◽  
Control Unit ◽  
Regenerative Braking ◽  
System Control ◽  
Vehicle Speed ◽  
Braking System ◽  
Execution Unit ◽  
Braking Force ◽  
Braking Control

As one of the key technologies of Hybrid Electronic Bus, regenerative braking technology can recover energy without changing the traditional bus braking habit. This is of vital importance in the research of regenerative braking system. Because the braking force distribution relationship between the front and rear axle of the vehicle has a remarkable influence in the braking stability,especially adding the regenerative braking force, the influence is even larger. So the anti-lock braking control strategy for the hybrid electronic vehicle is updated in this paper according to the condition of regenerative braking. The anti-lock braking control and regenerative braking control were integrated in one ECU (Electronic Control Unit) of braking control system, collecting signals of wheel rotate speed, vehicle speed, SOC and brake pedal position by CAN bus. And the output control commands are sent to the execution unit of anti-lock braking system and regenerative braking system. The effectiveness of energy regeneration and the braking stability of this strategy are tested on the off-line simulation platform.

Study of Regenerative Braking Model and Simulation of a Car

2012 ◽  
Vol 605-607 ◽  
pp. 384-387
Author(s):  
Feng Wang ◽  
Yong Hai Wu
Keyword(s):  
Control Strategy ◽  
Energy Recovery ◽  
Regenerative Braking ◽  
Braking System ◽  
Driving Cycles ◽  
Hybrid Car ◽  
Model And Simulation ◽  
Braking Force ◽  
Braking Control ◽  
Automotive Brake

A regenerative braking control strategy and the braking force distribution are putted forward based on the basic theory of automotive brake. The model of vehicle regenerative braking system and simulation under urban driving cycles are carried out taking a certain type of hybrid car as the research object. The simulation results show that, in circulation conditions of ECE + EUDC drive, the regenerative braking control strategy that this paper puts forward can ensure the reasonable distribution of vehicle braking force and realize the energy recovery of 15.7%.

Research on Coordination Control Strategy of Hydraulic Retarder and Friction Brake of Coach

2014 ◽  
Vol 1049-1050 ◽  
pp. 1009-1012
Author(s):  
Kui Yang Wang ◽  
Jin Hua Tang ◽  
Guo Qing Li
Keyword(s):  
Control Strategy ◽  
Force Distribution ◽  
Coordination Control ◽  
Loop Control ◽  
Distribution Strategy ◽  
Dynamic Coordination ◽  
Braking Torque ◽  
Braking Force ◽  
Hydraulic Retarder ◽  
Friction Brake

Based on the matching relationship between curve I of ideal braking force distribution and curve β of brake’s braking force distribution, the effect of hydraulic retarder on braking stability of coach is analysed, and the ideal braking force distribution strategy between hydraulic retarder and friction brake is put forward. The coordination control strategy of braking force between hydraulic retarder and friction brake is analyzed, and the dynamic coordination control strategy based on double closed-loop control structure and the coordination control algorithm with Anti-lock brake system (ABS) based on state machine are put forward. According to the above-mentioned coordination control strategy between hydraulic retarder and friction brake, the braking torque of hydraulic retarder can be made full use of and the degree of wear and heat load of friction brake can be greatly reduced in the premise of ensuring braking safety and comfort.

scholarly journals Structure design and coordinated control of electromagnetic and frictional braking system based on a hub motor

2021 ◽  
Vol 104 (1) ◽  
pp. 003685042199848
Author(s):  
Rui-Jun Zhang
Keyword(s):  
Fuzzy Control ◽  
Control Strategy ◽  
Coordinated Control ◽  
Structure Design ◽  
Integrated System ◽  
Slip Ratio ◽  
Braking System ◽  
Braking Torque ◽  
Fuzzy Control Strategy ◽  
Braking Process

A new type of built-in composite electromagnetic and frictional braking structural scheme and its corresponding coordinated control strategy were proposed to enhance the braking effects for the electric vehicle. Fuzzy control theory was applied to design the coordinated control strategy for the electromagnetic and frictional braking system. In comparison to lower braking strength and moderate braking strength, the slip ratio of high braking strength was maintained at near 0.15. It effectively avoided the wheel getting locked and provided relatively large braking torque in the process of braking. The integrated system using a fuzzy control strategy can effectively shorten the braking time, enhance the braking safety in the braking process.

Towards a new design with generic modeling and adaptive control of a transformable quadrotor

2021 ◽  
pp. 1-31
Author(s):  
S.H. Derrouaoui ◽  
Y. Bouzid ◽  
M. Guiatni
Keyword(s):  
Adaptive Control ◽  
Control Strategy ◽  
Experimental Tests ◽  
Generic Model ◽  
System Control ◽  
System A ◽  
Viable Solution ◽  
Generic Modeling ◽  
Adaptive Control Strategy ◽  
The Stability

Abstract Recently, transformable Unmanned Aerial Vehicles (UAVs) have become a subject of great interest in the field of flying systems, due to their maneuverability, agility and morphological capacities. They can be used for specific missions and in more congested spaces. Moreover, this novel class of UAVs is considered as a viable solution for providing flying robots with specific and versatile functionalities. In this paper, we propose (i) a new design of a transformable quadrotor with (ii) generic modeling and (iii) adaptive control strategy. The proposed UAV is able to change its flight configuration by rotating its four arms independently around a central body, thanks to its adaptive geometry. To simplify and lighten the prototype, a simple mechanism with a light mechanical structure is proposed. Since the Center of Gravity (CoG) of the UAV moves according to the desired morphology of the system, a variation of the inertia and the allocation matrix occurs instantly. These dynamics parameters play an important role in the system control and its stability, representing a key difference compared with the classic quadrotor. Thus, a new generic model is developed, taking into account all these variations together with aerodynamic effects. To validate this model and ensure the stability of the designed UAV, an adaptive backstepping control strategy based on the change in the flight configuration is applied. MATLAB simulations are provided to evaluate and illustrate the performance and efficiency of the proposed controller. Finally, some experimental tests are presented.

Intelligent optimization of EV comfort based on a cooperative braking system

2021 ◽  
pp. 095440702110044
Author(s):  
Lingying Zhao ◽  
Min Ye ◽  
Xinxin Xu
Keyword(s):  
System Model ◽  
Regenerative Braking ◽  
Coupling Mechanism ◽  
Intelligent Algorithm ◽  
Distribution Strategy ◽  
Braking System ◽  
Logic Diagram ◽  
Braking Torque ◽  
Braking Force ◽  
The Time Domain

To address the comfort of an electric vehicle, a coupling mechanism between mechanical friction braking and electric regenerative braking was studied. A cooperative braking system model was established, and comprehensive simulations and system optimizations were carried out. The performance of the cooperative braking system was analyzed. The distribution of the braking force was optimized by an intelligent method, and the distribution of a braking force logic diagram based on comfort was proposed. Using an intelligent algorithm, the braking force was distributed between the two braking systems and between the driving and driven axles. The experiment based on comfort was carried out. The results show that comfort after optimization is improved by 76.29% compared with that before optimization by comparing RMS value in the time domain. The reason is that the braking force distribution strategy based on the optimization takes into account the driver’s braking demand, the maximum braking torque of the motor, and the requirements of vehicle comfort, and makes full use of the braking torque of the motor. The error between simulation results and experimental results is 5.13%, which indicates that the braking force’s distribution strategy is feasible.

A Feedback Control Strategy for Torque-Vectoring of IWM Vehicles

2014 ◽  
Author(s):  
Francesco Braghin ◽  
Edoardo Sabbioni ◽  
Gabriele Sironi ◽  
Michele Vignati
Keyword(s):  
Electric Vehicles ◽  
Automotive Industry ◽  
Control Strategy ◽  
Control Logic ◽  
Power Train ◽  
Vehicle Handling ◽  
Torque Vectoring ◽  
Feedback Control Strategy ◽  
Object Of Study ◽  
Yaw Moment

In last decades hybrid and electric vehicles have been one of the main object of study for automotive industry. Among the different layout of the electric power-train, four in-wheel motors appear to be one of the most attractive. This configuration in fact has several advantages in terms of inner room increase and mass distribution. Furthermore the possibility of independently distribute braking and driving torques on the wheels allows to generate a yaw moment able to improve vehicle handling (torque vectoring). In this paper a torque vectoring control strategy for an electric vehicle with four in-wheel motors is presented. The control strategy is constituted of a steady-state contribution to enhance vehicle handling performances and a transient contribution to increase vehicle lateral stability during limit manoeuvres. Performances of the control logic are evaluated by means of numerical simulations of open and closed loop manoeuvres. Robustness to friction coefficient changes is analysed.

Process Control Method of Complex Product Multidisciplinary Collaborative Design System

2013 ◽  
Vol 712-715 ◽  
pp. 2888-2893
Author(s):  
Hai Qiang Liu ◽  
Ming Lv
Keyword(s):  
Information Sharing ◽  
Product Design ◽  
Design Process ◽  
Collaborative Design ◽  
Control Method ◽  
Integrated System ◽  
Design System ◽  
System Control ◽  
Complex Product ◽  
Product Design Process

In order to realize information sharing and interchange of complex product multidisciplinary collaborative design (MCD) design process and resources. The Process integrated system control of product multidisciplinary collaborative design was analyzed firstly in this paper, then design process of complex product for supporting multidisciplinary collaborative was introduced, a detailed description is given of the organization structure and modeling process of MCD-oriented Integration of Product Design Meta-model ; and concrete implement process of process integrated system control method was introduced to effectively realize information sharing and interchange between product design process and resources.

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