Asymmetric Energy Harvesting and Hydraulically Interconnected Suspension: Modeling and Validations

2019 ◽  
Author(s):  
Yuzhe Chen ◽  
Bonan Qin ◽  
Sijing Guo ◽  
Liangyao Yu ◽  
Lei Zuo
Keyword(s):  
Energy Harvesting ◽  
Vehicle Dynamics ◽  
Model Simulation ◽  
Lane Change ◽  
The Road ◽  
Car Model ◽  
Sinusoidal Input ◽  
Double Lane Change ◽  
Lane Change Test ◽  
Better Than

Abstract This paper introduces a new form of energy-harvesting suspension that is integrated in a hydraulically interconnected suspension (HIS) system. The combined energy-harvesting and hydraulic interconnection features provide improved energy efficiency and vehicle dynamics performance. A half car model and a full car model are developed to validate the effectiveness of this design. Different dynamic input scenarios are used for model simulation, which includes single-wheel sinusoidal input, two-wheel sinusoidal input and double lane change test. The system performs better than a conventional suspension system in rolling dynamics in the cases of the single-wheel road input and double lane change test. The heaving dynamics is dependent on the frequency of the road input. The energy harvesting can generate up to 421 w at 4 Hz and 40 mm (peak to peak) road input.

The Simulation of Four Wheel Steered Car Run in Close-Loop Driving Conditions

2014 ◽  
Vol 543-547 ◽  
pp. 1515-1519 ◽  
Author(s):  
Qi Jia Liu ◽  
Si Zhong Chen ◽  
Jun Wei Zhang
Keyword(s):  
Model Building ◽  
Control Method ◽  
Front Wheel ◽  
Lane Change ◽  
Car Model ◽  
Yaw Rate ◽  
Logical Control ◽  
Double Lane Change ◽  
Lane Change Test ◽  
Two Degree Of Freedom

The article put forwards a fuzzy logical control method which make the car yaw rate follow the reference yaw rate of two degree of freedom (2DOF) four-wheel-steer (4WS) vehicle model on the basis of the analysis of four wheel steer car proportional control, yaw rate feedback control and the control of following the response of 2DOF front wheel steer car model. Building a co-simulation model use the software of Carsim and Simulink, and made a simulation on the double lane change test. From the analysis we found that the control method can give a good performance on the test of double shift lane change test.

Verification of 14DOF Full Vehicle Model Based on Steering Wheel Input

2012 ◽  
Vol 165 ◽  
pp. 109-113 ◽  
Author(s):  
Z.A. Kadir ◽  
K. Hudha ◽  
F. Ahmad ◽  
Mohamad Faizal Abdullah ◽  
A.R. Norwazan ◽  
...  
Keyword(s):  
Vehicle Dynamics ◽  
Model Verification ◽  
Steering Wheel ◽  
Lane Change ◽  
Vehicle Model ◽  
Acceptable Error ◽  
Full Vehicle ◽  
Model Based ◽  
Double Lane Change ◽  
Lane Change Test

This paper presents a 14DOF full vehicle model which consists of ride, handling and tire subsystems to study vehicle dynamics behavior. The full vehicle model is then verified with well-known vehicle dynamics software namely CarSimEd based on the driver input from the steering wheel. Three types of vehicle dynamics test are performed for the purpose of model verification namely step steer test, double lane change test and slalom test. The results of model verification show that the behaviors of the model closely follow the behaviors obtained from CarSimEd software with acceptable error.

Identification of Linear Tire Cornering Stiffness Using Subspace Methods

2014 ◽  
Vol 701-702 ◽  
pp. 492-497
Author(s):  
Teng Yue Ba ◽  
Xi Qiang Guan ◽  
Jian Wu Zhang
Keyword(s):  
Data Driven ◽  
Subspace Identification ◽  
Subspace Methods ◽  
Identification Methods ◽  
The Road ◽  
Strong Robustness ◽  
Subspace Algorithms ◽  
Double Lane Change ◽  
On The Road ◽  
Lane Change Test

In this paper, subspace identification methods are proposed to estimate the linear tire cornering stiffness, which are only based on the road tests data without any prior knowledge. This kind of data-driven method has strong robustness. In order to validate the feasibility and effectiveness of the algorithms, a series of standard road tests are carried out. Comparing with different subspace algorithms used in road tests, it can be concluded that the front tire cornering stiffness can be estimated accurately by the N4SID and CCA methods when the double lane change test data are taken into analysis.

A Modified Dugoff Tire Model for Combined-slip Forces

2010 ◽  
Vol 38 (3) ◽  
pp. 228-244 ◽  
Author(s):  
Nenggen Ding ◽  
Saied Taheri
Keyword(s):  
Vehicle Dynamics ◽  
Tire Model ◽  
Magic Formula ◽  
Model Based ◽  
Proposed Model ◽  
Road Friction ◽  
On Line ◽  
Double Lane Change ◽  
Tire Forces ◽  
Tire Models

Abstract Easy-to-use tire models for vehicle dynamics have been persistently studied for such applications as control design and model-based on-line estimation. This paper proposes a modified combined-slip tire model based on Dugoff tire. The proposed model takes emphasis on less time consumption for calculation and uses a minimum set of parameters to express tire forces. Modification of Dugoff tire model is made on two aspects: one is taking different tire/road friction coefficients for different magnitudes of slip and the other is employing the concept of friction ellipse. The proposed model is evaluated by comparison with the LuGre tire model. Although there are some discrepancies between the two models, the proposed combined-slip model is generally acceptable due to its simplicity and easiness to use. Extracting parameters from the coefficients of a Magic Formula tire model based on measured tire data, the proposed model is further evaluated by conducting a double lane change maneuver, and simulation results show that the trajectory using the proposed tire model is closer to that using the Magic Formula tire model than Dugoff tire model.

scholarly journals Striated Tire Yaw Marks—Modeling and Validation

Energies ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4309
Author(s):  
Wojciech Wach ◽  
Jakub Zębala
Keyword(s):  
Vehicle Dynamics ◽  
Linear Equations ◽  
Tire Model ◽  
Vehicle Accidents ◽  
The Road ◽  
Variable Curvature ◽  
Macro Scale ◽  
On The Road ◽  
Multi Body ◽  
Non Linear Equations

Tire yaw marks deposited on the road surface carry a lot of information of paramount importance for the analysis of vehicle accidents. They can be used: (a) in a macro-scale for establishing the vehicle’s positions and orientation as well as an estimation of the vehicle’s speed at the start of yawing; (b) in a micro-scale for inferring among others things the braking or acceleration status of the wheels from the topology of the striations forming the mark. A mathematical model of how the striations will appear has been developed. The model is universal, i.e., it applies to a tire moving along any trajectory with variable curvature, and it takes into account the forces and torques which are calculated by solving a system of non-linear equations of vehicle dynamics. It was validated in the program developed by the author, in which the vehicle is represented by a 36 degree of freedom multi-body system with the TMeasy tire model. The mark-creating model shows good compliance with experimental data. It gives a deep view of the nature of striated yaw marks’ formation and can be applied in any program for the simulation of vehicle dynamics with any level of simplification.

On the Road Profile Estimation from Vehicle Dynamics Measurements

2021 ◽  
Author(s):  
Angelo Domenico Vella ◽  
Antonio Tota ◽  
Alessandro Vigliani
Keyword(s):  
Vehicle Dynamics ◽  
The Road ◽  
Road Profile ◽  
On The Road ◽  
Profile Estimation

scholarly journals A Fundamental Study for Design of Electric Energy Harvesting Device using PZT on the Road

2011 ◽  
Vol 13 (4) ◽  
pp. 159-166
Author(s):  
Jae-Jun Lee ◽  
Seung-Ki Ryu ◽  
Hak-Yong Moon ◽  
Soo-Ahn Kwon
Keyword(s):  
Energy Harvesting ◽  
Electric Energy ◽  
Fundamental Study ◽  
The Road ◽  
On The Road
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