A Hydraulic Semi-Active Suspension Based on Road Statistical Properties and Its Road Identification

Zhao, Leilei; Yu, Yuewei; Zhou, Changcheng; Wang, Shufeng; Ye, Fuxing; Wang, Song

doi:10.3390/app8050740

Cited by 11 publications

(4 citation statements)

References 32 publications

(35 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Guan et al [19] proposed an identification approach based on road type recognition for the robust identification of maximum of road friction coefficient and optimal slip ratio. Zhao et al [20] applied power spectral density (PSD) for road identification to control a hydraulic semi-active suspension. Han et al [21] utilized the relationship between road surface condition and tire cornering stiffness to detect road surface condition.…”

Section: Introductionmentioning

confidence: 99%

Road Terrain Recognition Based on Tire Noise for Autonomous Vehicle

Yang,

Zhang,

Yuan

et al. 2024

Preprint

View full text Add to dashboard Cite

Choosing different driving modes according to different road terrains can effectively improve the driving safety, pass-ability and comfort. However, there still remains some challenge on accurate and robust road terrain recognition using deep learning in complex environment. In this paper, we proposed an end-to-end tire noise recognition residual network (TNResNet) together with a time-frequency attention module, which can be used to capture time-frequency information of tire noise signal for road terrains recognition. Five different roads including asphalt road, cement road, grass road, mud road and sand road were tested by our method, whose performance was compared with other machine learning and deep learning methods such as Decision Tree, K-Nearest Neighbors, Support Vector Machine, Long Short-Term Memory, Convolutional Neural Network, and Artificial Intelligence Model. Experimental results show that our proposed TNResNet has the best performance among the mentioned methods, and its validation classification accuracy reaches 99.48%. This method shows remarkable application value in automatic road terrain identification of autonomous vehicles.

show abstract

Section: Introductionmentioning

confidence: 99%

Road Terrain Recognition Based on Tire Noise for Autonomous Vehicle

Yang,

Zhang,

Yuan

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…How to obtain the strong handling stability for improving the driving safety is an important issue in vehicle design [1][2][3]. The suspension is an important system connecting the truck frame and wheel [4]. The leaf spring is the most widely used elastic element in the suspension system for trucks.…”

Section: Introductionmentioning

confidence: 99%

Truck Handling Stability Simulation and Comparison of Taper-Leaf and Multi-Leaf Spring Suspensions with the Same Vertical Stiffness

Zhao

Zhang

et al. 2020

Applied Sciences

Self Cite

View full text Add to dashboard Cite

The lightweight design of trucks is of great importance to enhance the load capacity and reduce the production cost. As a result, the taper-leaf spring will gradually replace the multi-leaf spring to become the main elastic element of the suspension for trucks. To reveal the changes of the handling stability after the replacement, the simulations and comparison of the taper-leaf and the multi-leaf spring suspensions with the same vertical stiffness for trucks were conducted. Firstly, to ensure the same comfort of the truck before and after the replacement, an analytical method of replacing the multi-leaf spring with the taper-leaf spring was proposed. Secondly, the effectiveness of the method was verified by the stiffness tests based on a case study. Thirdly, the dynamic models of the taper-leaf spring and the multi-leaf spring with the same vertical stiffness are established and validated, respectively. Based on this, the dynamic models of the truck before and after the replacement were established and verified by the steady static circular test, respectively. Lastly, the handling stability indexes for the truck were compared by the simulations of the drift test, the ramp steer test, and the step steer test. The results show that the yaw rate of the truck almost does not change, the steering wheel moment decreases, the vehicle roll angle obviously increases, and the vehicle side slip angle slightly increases after the replacement. Thus, the truck with the taper-leaf spring suspension has better steering portability, however, its handling stability performs worse. requirements for the handling stability of trucks [11][12][13]. However, the changes of the handling stability after the replacement have not been revealed.Due to the advantages of light weight and low noise, the taper-leaf spring is more and more used in trucks. At present, scholars mainly focus on its dynamic property, stress, and strain. Moreover, most of the studies of its mechanical properties mainly were conducted by using simulation software packages, such as Ansys, Nastran, Abaqus, and Adams. Duan et al. created the dynamic model of the tandem suspension equipped with the taper leaf spring for trucks based on Adams software [14]. In order to research the stress of a taper leaf spring, Moon et al. established a flexible multi-body dynamic model [15]. Wang et al. proposed a calculation method of the stiffness of the taper-leaf spring based on the combine superposition method and the finite difference method [16]. Zhou et al. analyzed the mechanical properties of the taper leaf spring considering the friction between the leaf springs on the basis of the FE (Finite Element) contact analysis [17]. To improve the kinematics characteristics of a midsize truck, Kim et al. selected the optimal combination parameters based on a vehicle model with a taper leaf spring [18]. Some scholars improved the performance of leaf springs from the perspective of materials. For example, Chandra et al. researched the high-temperature quality of the accelerated spheroidi...

show abstract

“…Then, the effect of the bleed orifice in fluid flow was estimated to offer a deep understanding of working fundamentally. The damper composed of a stepper motor that can help to realise the properties of semi-active control [16,17]. At last, the working condition of a vehicle employing controllable damper is analysed with the various types of setting.…”

Section: Introductionmentioning

confidence: 99%

Adjustable Valve Semi-Active Suspension System for Passenger Car

Ahmed¹,

Yusoff²,

M.³

2019

IJAME

View full text Add to dashboard Cite

The suspension of the car plays a very important role in the safety and the comfort of the vehicle and for absorbing the shock waves and give comfort for the driver and passenger. This paper improves the performance of an automobile suspension system by developing electronically adjustable semi-active shock absorber. This achieved by attaching stepper motor for each shock absorber which helps in adjusting the bleed orifice to a certain position that alternates the hydraulic oil flow in the shock absorber between piston’s chamber during the process of compression and rebound. To evaluate the effect of developed semi-active shock absorber on the dynamic behaviour of the vehicle, several tests were carried out on different types of road condition (bumpy, straight-line and roundabout). These tests were used to evaluate the acceleration and ride quality. There is a great range in response when the bleed orifice is opened reached up to 35% between the stiff and soft setting. The value of root means square acceleration (RMS) was calculated and compared with the standard of human exposure to whole-body vibration, which shows an error of 6% slightly. The result shows the effect of electronically controllable shock absorber on a vehicle’s dynamic behaviour — the advantage of electronics to improve the performance of ride comfort and reduced the harms due to undesired vibration.

show abstract

A Hydraulic Semi-Active Suspension Based on Road Statistical Properties and Its Road Identification

Cited by 11 publications

References 32 publications

Road Terrain Recognition Based on Tire Noise for Autonomous Vehicle

Road Terrain Recognition Based on Tire Noise for Autonomous Vehicle

Truck Handling Stability Simulation and Comparison of Taper-Leaf and Multi-Leaf Spring Suspensions with the Same Vertical Stiffness

Adjustable Valve Semi-Active Suspension System for Passenger Car

Contact Info

Product

Resources

About