A New Auxiliary Steering Angle Sensor for Power-Steering in Four-Wheelers

2021 ◽  
Author(s):  
Mithun M. S. ◽  
Utpol Tarafdar ◽  
Hemanth Sankar P.
Keyword(s):  
Steering Angle ◽  
Angle Sensor ◽  
Power Steering

Vehicle Stability Analyse with Electronic Power Steering Based on Yaw Rate Feedback

2013 ◽  
Vol 397-400 ◽  
pp. 1351-1356
Author(s):  
Hai Feng Song ◽  
Wei Wei Yang
Keyword(s):  
Control Method ◽  
Integrated Control ◽  
Vehicle Stability ◽  
Vehicle Model ◽  
Steering Angle ◽  
Yaw Rate ◽  
Power Steering ◽  
Rate Feedback ◽  
Yaw Stability ◽  
Yaw Moment

A control method is proposed to improve vehicle yaw stability by the integrated control of yaw moment control. The control strategy using feedback compensator is proposed, which produces direct yaw moment and front steering angle to control yaw rate, by actively controlling the front steering angle, the integrated control system makes the performance of the actual vehicle model follow that of an ideal vehicle model. A experiment is performed at different conditions, the results showed the presented method can effectively control the yaw rate, and at the same time lighten the burden of the driver. Key words: EPS; Yaw rate feedback; Vehicle stability

Distributed drive electric autonomous vehicle steering angle control based on active disturbance rejection control

2020 ◽  
Vol 235 (1) ◽  
pp. 128-142
Author(s):  
Bo Leng ◽  
Yehan Jiang ◽  
Yize Yu ◽  
Lu Xiong ◽  
Zhuoping Yu
Keyword(s):  
Disturbance Rejection ◽  
Active Disturbance Rejection Control ◽  
Moment Estimator ◽  
Electric Power Steering ◽  
Steering Angle ◽  
Power Steering ◽  
Active Disturbance Rejection ◽  
Disturbance Rejection Control ◽  
Tracking Controller ◽  
Angle Tracking

Based on active disturbance rejection control technique and characteristics of electric power steering, a steering angle tracking controller is designed, which consists of an aligning moment estimator to deal with modeling error and nonlinearity of electric power steering. The aligning moment estimator is based on an extended state observer and takes steering system friction and differential drive steering torque, which is a unique phenomenon in a distributed drive electric vehicle, into consideration. According to the estimated aligning moment and tracking differentiator, the steering angle tracking controller is designed based on a nonlinear state feedback control and feedforward compensation control laws. Results of various simulations and experiments, including pivot steering, step input steering, and sinusoidal input steering, show that the proposed controller has good performance in tracking reference steering angle and is convenient to implement. With the aligning moment estimator, the proposed controller shows better results in comparative experiments than a conditional integral-based steering angle tracking controller.

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.

Return Control of Electronic Power Steering Unequipped with an Angle Sensor

2019 ◽  
Vol 20 (2) ◽  
pp. 349-357
Author(s):  
Shaosong Li ◽  
Luping Guo ◽  
Gaojian Cui ◽  
Zhixin Yu ◽  
Xiaohui Lu ◽  
...  
Keyword(s):  
Angle Sensor ◽  
Power Steering

A New Steering-by-Wire System Driving by Electric Wheels

2015 ◽  
Vol 729 ◽  
pp. 175-180
Author(s):  
Ping Xia Zhang ◽  
Li Gao ◽  
Yong Qiang Zhu
Keyword(s):  
Steering System ◽  
Steering Wheel ◽  
Steering Angle ◽  
Step Input ◽  
Labview Software ◽  
Power Steering ◽  
Wheel Turning ◽  
And Control ◽  
Wire System ◽  
Input Test

For electric power steering is weak and can not be used in heavy vehicles. In order to solve this problem, according to the characteristic that the driving torque of left and right steering wheel can be independently controlled in electric wheel driving vehicle, a new non-trapezium-steering system has been proposed based on electric wheel driving and powering in this paper. This system makes use of the steering torque around the kingpin from electric wheel driving, and is controlled by steering constraint mechanism. Steering system force analysis was conducted to analyze the feasibility of the system in theory. On this basis, a small prototype vehicle was designed. With the use of Bluetooth wireless serial chip and STC12c5a60s2 microcontrollers, the steering-by-wire system lower computer was developed. With the LabView software, the upper computer system was developed in notebook computer. With these two systems, the steering system can conduct data acquisition and control. To verify the performance of the system, the steering angle step input test while vehicle is stationary, the steering angle step input test at low running speed were carried out respectively on the prototype vehicle. Results of steering wheel turning angle and wheel rotation rate show that non-trapezium steering-by-wire electric wheel driving power system can complete steering operation in a variety of conditions, and after removing steering trapezium, each wheel can be separately controlled for steering, and easy to implement multi-mode steering.

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