Handling and Stabilities Calculation and Analysis of Automobile Steer by Wire System Driven by Graphic User Interface

2011 ◽  
Vol 97-98 ◽  
pp. 761-764
Author(s):  
Lei Yan Yu ◽  
Zhen Long Wu ◽  
Wan Zhong Zhao
Keyword(s):  
User Interface ◽  
Steering System ◽  
Total Variance ◽  
Steering Wheel ◽  
Graphic User Interface ◽  
Dynamics Model ◽  
Steer By Wire ◽  
Velocity Moment ◽  
Steering Torque ◽  
Wire System

Automobile steer by wire system (SBW) is a novel steering system. Firstly, the linear four degree of freedom dynamics model with steering torque as the input is built. Then the design ,simulation and multi discipline optimization parameterized platform of SBW is built based on Matlab Graphic User Interface, which can design and simulate steering system performances quickly. Effects of different parameters such as velocity, moment inertia of steering wheel and tire cornering stiffness on handling and stabilities are analyzed. Finally parameters are optimized to minimize the response total variance under torque input and improve the response under steering torque input.

Research on Angle Measurement of Loader's Steering-by-Wire System

2013 ◽  
Vol 373-375 ◽  
pp. 138-141
Author(s):  
Hai Xia Zhao ◽  
Zhi En Lv
Keyword(s):  
Control System ◽  
Automatic Control ◽  
Working Conditions ◽  
Hydraulic System ◽  
Steering System ◽  
Angle Measurement ◽  
Corner Detection ◽  
Steering Wheel ◽  
Steer By Wire ◽  
Wire System

The loader's steer-by-wire system combines the automatic control system and hydraulic system. The system cancels the mechanical or hydraulic connection between the steering wheel and the front wheels, which existed in the original steering system, optimizing the adaptation of the loaders steering systems road feeling to its working conditions, convenient for the integration with other systems, and harmonization of control. This paper puts forward a new measurement of a steer-by-wire system steering angel. It aims at more accurate corner detection, will design to optimize loader's steer-by-wire hydraulic system signal detection, and better meet the actual needs.

Development of a driving assist system for ultra-compact electric vehicles using a steer-by-wire system: Fundamental consideration of muscle burden and evaluation by a continuous steering operation

2020 ◽  
Vol 64 (1-4) ◽  
pp. 1111-1118
Author(s):  
Daigo Uchino ◽  
Xiaojun Liu ◽  
Hideaki Kato ◽  
Takayoshi Narita
Keyword(s):  
Electric Vehicles ◽  
Gear Ratio ◽  
Steering Wheel ◽  
Steering Angle ◽  
Power Steering ◽  
Steer By Wire ◽  
Steering Torque ◽  
Distance Travel ◽  
Wire System ◽  
Fundamental Consideration

Ultra-compact electric vehicles has excellent environmental performance and are extremely convenient for short-distance travel. However, owing to cabin space limitations, it is difficult to mount power steering. Therefore, there is a need to increase the gear ratio of the rack and pinion to change steering angle because such vehicles need light torque to steer. However, increasing the gear ratio requires more rotations of the steering wheel. Our research group focused on developing a steer-by-wire system (SBWS) that freely controls the steering torque. Although we evaluated the burden when a driver rotates the steering wheel in one direction in a previous study. This study assumed the actual steering operation in an SBWS. And then we evaluate muscle burden when a driver steers with continuous changing of the steering direction.

The Variable Steering Ratio for Vehicle Steer by Wire System Using Hyperbolic Tangent Method

2014 ◽  
Vol 575 ◽  
pp. 781-784 ◽  
Author(s):  
Sheikh Muhammad Hafiz Fahami ◽  
Hairi Zamzuri ◽  
Saiful Amri Mazlan ◽  
Sarah Atifah Saruchi
Keyword(s):  
High Speed ◽  
Control Algorithm ◽  
Steering System ◽  
Steering Wheel ◽  
Hyperbolic Tangent ◽  
Steer By Wire ◽  
Tangent Method ◽  
Vehicle Maneuver ◽  
Wire System

In conventional steering system, during the parking maneuver, driver required large turned on the steering wheel to move the fornt tyre. Thus, it will increase the driver burden when turned the steering wheel. The feature of variable steering ratio (VSR), help to reduce driver burden. Moreover, it improves the vehicle maneuver at lower and high speed. This paper, proposed a control algorithm of variable steering ratio (VSR) in vehicle SBW system. The concept of hyperbolic tangent is used where it not only improved the maneuverability at lower speed, but also reduces the driver burden on the steering wheel. To investigate the effectiveness of the proposed VSR algorithm, the result is compared with conventional steering system

scholarly journals Analysis on the research method of road sense feedback in steer-by-wire system

2021 ◽  
Vol 2121 (1) ◽  
pp. 012031
Author(s):  
Chuanbin Wei ◽  
Lizhu Zhang ◽  
You Fu ◽  
Faying Xia
Keyword(s):  
Automobile Industry ◽  
Basic Structure ◽  
Steering System ◽  
Mechanical Transmission ◽  
Driving Experience ◽  
The Road ◽  
Establishment Method ◽  
Steer By Wire ◽  
Transmission Structure ◽  
Wire System

Abstract Nowadays, the automobile industry is gradually developing towards the trend of electrification and intelligence. Compared with the traditional steering system, the steer-by-wire system cancels the mechanical transmission structure, reduces the space utilization, reduces the probability of damage to the driver caused by the steering system in the collision accident, and improves the driving portability and enhances the driver’s handling experience. The road feeling feedback of steer-by-wire system has the greatest impact on the driver’s driving experience. This paper discusses the research methods of road feeling feedback of steer-by-wire system, introduces the basic structure of road feeling feedback of steer-by-wire system, the basic idea of dynamic modeling, the establishment of simulation model of road feeling feedback, and the establishment method of control strategy and simulation platform of road feeling feedback. Finally, it summarizes and prospects in order to provide basic information and perspectives for the development and research of steer-by-wire system.

scholarly journals Electronic Control System for Steer by Wire

2021 ◽  
Vol 9 (VI) ◽  
pp. 4161-4166
Author(s):  
Eeshan Ranade
Keyword(s):  
Electric Power ◽  
Engine Performance ◽  
Steering System ◽  
Electric Power System ◽  
Driving Safety ◽  
Steering Wheel ◽  
Hydraulic Systems ◽  
Compact Structure ◽  
Steer By Wire ◽  
Improved Performance

Automobile industry’s focus is on efficiency, safety and performance has resulted in the rapid introduction of electronics in vehicle safety systems and engine management. Mechanical and Hydraulic systems are now gradually being replaced by electronic controllers to achieve the objectives of optimizing power consumption, improving driver convenience, and maximizing driver safety resulting in an overall improved performance and experience. Vehicle steering systems have transitioned from mechanical to hydraulic power to an electric power assisted steering system and now to the state of the art, Steer by Wire (SbW) system. Traditional mechanical systems included a steering wheel, column, gear, rack and pinion and did not support any power steering. The next generation hydraulic systems were more stable, safer and required comparatively lesser effort. Electric or DC motors drove the Electric Power System addressing the drawbacks of the hydraulic systems especially those related to environment and acoustics with the added advantage of a compact structure and power-on-demand engine performance. By-wire steering technologies was originally introduced in the Concord aircraft in 1970s. The SbW is a steering system with no steering column. The mechanical interface between the steering wheel and the wheels is replaced with by-wire electrical connection/electronic actuators. SbW system has significant advantages in terms of driving safety due to the availability of the steering command in electronic form and the removal of the steering shaft, cruising comfort with driving manoeuvring due to no space constraint and favourable to the environment with the non-usage of hydraulic oils.

Control of Steer by Wire System for Reference Steering Wheel Torque Tracking and Return-Ability

2018 ◽  
Author(s):  
Jaepoong Lee ◽  
Yi kyongsu ◽  
Kwangil Kim ◽  
Byungrim Lee ◽  
Dongpil Lee ◽  
...  
Keyword(s):  
Steering Wheel ◽  
Steer By Wire ◽  
Wheel Torque ◽  
Wire System

scholarly journals A Hysteresis-Based Steering Feel Model for Steer-by-Wire Systems

2017 ◽  
Vol 2017 ◽  
pp. 1-14
Author(s):  
M. Selçuk Arslan
Keyword(s):  
Mathematical Model ◽  
Steering System ◽  
Steering Wheel ◽  
Hysteresis Model ◽  
Steering Feel ◽  
Proposed Model ◽  
Steer By Wire ◽  
Wheel Torque ◽  
Tire Dynamics ◽  
The Mathematical Model

A mathematical model of steering feel based on a hysteresis model is proposed for Steer-by-Wire systems. The normalized Bouc-Wen hysteresis model is used to describe the steering wheel torque feedback to the driver. By modifying the mathematical model of the hysteresis model for a steering system and adding custom parameters, the availability of adjusting the shape of steering feel model for various physical and dynamic conditions increases. Addition of a term about the tire dynamics to the steering feel model renders the steering wheel torque feedback more informative about the tire road interaction. Some simulation results are presented to establish the feasibility of the proposed model. The results of hardware-in-the-loop simulations show that the model provides a realistic and informative steering feel.

In-the-Loop Simulation Based on the Test Bed of Automotive Steer-by-Wire System

2014 ◽  
Vol 705 ◽  
pp. 142-145
Author(s):  
Wen Ming Yu
Keyword(s):  
Steering System ◽  
System Structure ◽  
Test Bed ◽  
Qualitative Simulation ◽  
Simulation Based ◽  
Steer By Wire ◽  
Working Principle ◽  
Simulation Results ◽  
Wire System

Automotive steer-by-wire system uses electronic signaling to transfer the command and causes the motor-driven steering. It can improve the maneuverability and stability of the driver steering. This article first discussed the car-by-wire steering system structure and working principle. Then, it builds the in-the-loop simulation based on the test bed of automotive steer-by-wire system. Moreover, this paper researches the test bad design of the automotive steer-by-wire system. The operation module controller is designed based on the of the automotive steer-by-wire system. At last, we can find out the qualitative simulation results.

scholarly journals Research on Torque Ratio Based on the Steering Wheel Torque Characteristic for Steer-by-Wire System

2014 ◽  
Vol 2014 ◽  
pp. 1-7
Author(s):  
Yandong Han ◽  
Lei He ◽  
Xiang Wang ◽  
Changfu Zong
Keyword(s):  
Force Feedback ◽  
Characteristic Curve ◽  
Transmission Ratio ◽  
Steering Wheel ◽  
Vehicle Handling ◽  
Design Goal ◽  
Torque Transmission ◽  
Steer By Wire ◽  
Wheel Torque ◽  
Wire System

Steer-by-wire system can improve the performance of vehicle handling stability. Removing the mechanical linkages between the front wheels and the steering wheel leads to a key technique of force feedback for steer-by-wire system. In view of the characteristic of variable torque transmission ratio for steer-by-wire system, this paper proposes a method for designing torque ratio based on the steering wheel torque characteristic for steer-by-wire system. It converts the torque ratio design into equivalent assist torque design by analyzing their relationship. It achieves the torque ratio design at different conditions based on the negative equivalent assist torque characteristic curve. Simulations and vehicle experiments are conducted by the proposed method, and the results show that the design goal has been achieved and the steering wheel torque characteristic obtained is very similar to that of the reference car.

scholarly journals A Review Paper on Electric Assisted Steering System for Automobiles

2021 ◽  
Vol 7 (03) ◽  
pp. 54-56
Author(s):  
Prof. Nivedita, Pall Choudhury, Ashutosh Jagdale, Ravi Ghule and Simran Shaikh
Keyword(s):  
Steering System ◽  
Steering Wheel ◽  
Electric System ◽  
Human Needs ◽  
Construction Design ◽  
Active Steering ◽  
Hydraulic Steering ◽  
Steering Effort ◽  
Steering Torque ◽  
Electronic Elements

Electric Assisted Steering system is an Electric System, which reduces the amount of steering effort by directly applying the output from the electric motor to the steering system.In this system the mechanical link between the steering wheel and road wheels of an automobile are replaced by a control system consisting of sensors, actuators and controllers seem to offer great advantages such as enhanced system performance, simplified construction, design flexibility etc.It offers greater vehicle safety by adapting variable steering ratios to human needs, filtering drive train influences and even adjusting active steering torque in critical situations. In addition, it can make cars even lighter and more fuel efficient when compared to those using hydraulic steering systems. The central electronic elements of today’s steering systems are modern microcontrollers

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