HomeApplied Mechanics and MaterialsApplied Mechanics and Mechanical Engineering IIIModeling and Analysis of Brake by Wire System in...
STEER-BY WIRE SIMULATION MODEL eng. Brabec P.1, doc. This paper summarizes the results obtained from the simulation of a mathematical model of a vehicle with a steer-by-wire system (an electrohydraulic system) while cornering. The simulation was carried out in the MATLAB – Simulink software. KEYWORDS: STEER-BY-WIRE, 4WS, DRIVE.
Abstract:
In order to improve performances of a virtual prototype, modeling and analysis are necessary before a system is produced and put into use. Firstly, structure and control schematics of electric vehicle with the steer by wire system and brake by wire system integrated are analyzed. Then, dynamics models of brake by wire system including the motor, planetary gear reducer, ball screw, etc. are built using Matlab software. Finally, effects of brake by wire system parameters such as motor parameters on system performance such as time domain and frequency domain response characteristics are analyzed using modern control theory. The results show that the modeling and analysis helps to find the performance sensitive parameters ,which will be used for parameter optimization design of brake by wire system.
L. Y. Yu et al., 'Modeling and Analysis of Brake by Wire System in Electric Vehicle', Applied Mechanics and Materials, Vols. 249-250, pp. 622-627, 2013
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Abstract: Electrical Parking Brake is a system comprises the temporary brake of driving and long-term parking brake, and controlled by electrical. This paper researches the electrical parking brake system which is in using and on developing, illustrates the design and control of electrical parking brake system, and simulates the braking effect. This Electrical Parking Brake can saves energy and reduces handle difficulty.
2254
Abstract: Parameterization design was applied to actuator structural design and three-dimensional entity modeling of brake by wire system. Based on pro-engineering software environment, motor driving entity model of brake by wire system was established. Motion transformation device, force booster device, cylindrical gear decelerate device were included. According to relative motor parameters and structural function of the equation, structural design of motion transformation device, force booster device and cylindrical gear decelerate device were carried on. Under Pro-E entity modeling platform, three-dimensional entity model of brake by wire system was established.
5881
Abstract: To improve the car's active safety, studies on electromechanical brake (EMB) system have been taken in recent years. The principle and characteristics of EMB are investigated in this paper. An EMB system is designed, and a ballscrew/ballnut assembly is used as the transmission device. The comparison of hydraulic brake (HB) and EMB shown that EMB could regulate brake force more quickly and accurately.
509
Abstract: Project the integrated braking system for electric vehicles based on in-wheel motor and friction brake. Set up the integrated system dynamic model based on energy regenerative and feedback friction integrated braking. Come up with EBD control strategy on bisectional roads based on ABS system. Establish the dynamics simulation system and EBD control simulation system for the electric vehicles with the integrated braking system based on Matlab/Simulink. Simulate and analyze EBD control performance of the integrated braking system on bisectional road straight condition aimed at Chery A3 sedan. The study results indicate that the EBD control performance of electric vehicle with the integrated braking system has a high braking energy recovery ratio, braking efficiency and braking stability.
2327
Abstract: 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%.
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Abstract
The power steering system heavily rely on hydraulic system to transmit power. However, current power steering systems normally use valve control, which introduces high power loss due to throttling of the flow. Displacement control (DC) is proven to be a great alternative for hydraulic system to cut power loss. Ongoing research has shown great potential of energy savings and productivity increases of DC systems. Therefore, displacement control will be a very good fit for the steering system in order to increase system efficiency. Furthermore, steer-by-wire systems are currently investigated to replace traditional steering systems in vehicles. Steer-by-wire systems allow implementing advanced controller, such as required for autonomous driving and active safety functions. A novel displacement controlled steer-by-wire system with emergency system function is proposed in this thesis. In order to demonstrate the performance of the proposed displacement controlled steer-by-wire system, the hydraulic and mechanical system has been modeled through MATLAB/Simulink® . Most of the physics are captured in the model, such as the pump dynamics and system power loss, system pressure buildup, steering system load force calculation, etc. The novel DC steer-by-wire system is proposed for a combine harvester. Experimental data has been used to validate the model. Then, the validated model has been used to demonstrate system performance. From the result, the proposed system shows a very good tracking of command signal. Above that, the proposed system saved 80% of the pump output energy to the steering system by eliminating the valve-throttling loss. The overall system efficiency is very good. In addition, a simplified simulation model is built to cut simulation time for basic function demonstration only.
Degree
M.S.M.E.
Advisors
Ivantysynova, Purdue University.
Subject Area
Mechanical engineering
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