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Estimating Vehicle Stability Region Based on Energy Function

Yu-guang Yan, Hong-guo Xu, Hong-fei Liu
2015 Discrete Dynamics in Nature and Society  
In order to improve the deficiency of vehicle stability region, according to vehicle nonlinear dynamic model, method of estimating vehicle spatial stability region was proposed.  ...  By establishing energy function for vehicle system, the vehicle's stability region in 20 m/s was estimated based on Lyapunov theorem and vehicle system characteristics.  ...  In 2002, Ko and Lee estimated plane stability region of vehicle by side slip angle and yaw rate according to topology theory and 2DOF vehicle model [7] .  ... 
doi:10.1155/2015/805063 fatcat:ghdq2lh3arfjvmphn4morgfkb4

Map-based control method for vehicle stability enhancement

Moon-Young Yoon, Seung-Hwan Baek, Kwang-Suk Boo, Heung-Seob Kim
2015 Journal of Central South University  
This work proposes a map-based control method to improve a vehicle's lateral stability, and the performance of the proposed method is compared with that of the conventional model-referenced control method  ...  However, map-based control determines a compensated yaw moment to maintain the vehicle within the stability region, so the typical responses of vehicle enable to converge rapidly.  ...  Acknowledgment This work was supported by a grant from Research year of Inje University in 2008(0001200811700).  ... 
doi:10.1007/s11771-015-2501-2 fatcat:gur2iyyjxferxcavrv7afnt2u4

Active Coordination of The Individually Actuated Wheel Braking and Steering To Enhance Vehicle Lateral Stability and Handling

Erkin Dinçmen, Tankut Acarman
2008 IFAC Proceedings Volumes  
When the tire forces are regulated to operate in the linear region of their nonlinear characteristics, the drive ability and manageability of the vehicle motion dynamics is enhanced in terms of handling  ...  In the outer loop of the proposed control scheme, Linear Quadratic (LQ) optimal controller is introduced in order to assure the overall lateral stability, the driver's desired yaw rate and the desired  ...  Stability analysis on a basis of Lyapunov analysis is given in Appendix.  ... 
doi:10.3182/20080706-5-kr-1001.01820 fatcat:uws6guooorhdbh5pqcfc77hduu

Automotive vehicle sideslip angles estimation in a bounded-error context

S. Fergani, C. Jauberthie, L. Travé-Massuyès
2017 IFAC-PapersOnLine  
Indeed, in this paper, an estimation strategy is developed to reconstruct the vehicle sideslip dynamical behaviour and then proceed to a stability analysis of the car based on the driving situation.  ...  This paper concerns the estimation of the sideslip dynamics of automotive vehicles in a bounded-error framework.  ...  The vehicle stability region is derived from the phase-plane (β −β) as follows: One of the motivations of the previously defined interval analysis estimation of the sideslip angle is shown in Fig. 6  ... 
doi:10.1016/j.ifacol.2017.08.2582 fatcat:lsbhqztqtng73bqqcmxooqiyn4

Nonlinear analysis of vehicle control actuations based on controlled invariant sets

Balázs Németh, Péter Gáspár, Tamás Péni
2016 International Journal of Applied Mathematics and Computer Science  
In the paper, an analysis method is applied to the lateral stabilization problem of vehicle systems.  ...  The aim is to find the largest state-space region in which the lateral stability of the vehicle can be guaranteed by the peak-bounded control input.  ...  Acknowledgment The research was supported by the National Research, Development and Innovation Fund through the project SEPPAC: Safety and Economic Platform for Partially Automated Commercial Vehicles  ... 
doi:10.1515/amcs-2016-0003 fatcat:47z2jqpb3nb2tnwsj3oedcedpq

Parametric study of lateral stability for a railway vehicle

Joon-Hyuk Park, Hyo-In Koh, Nam-Po Kim
2011 Journal of Mechanical Science and Technology  
This paper deals with the lateral stability for a railway vehicle. Particularly, nonlinear critical speed is investigated via bifurcation analysis.  ...  Shooting method and trust region algorithm are applied to calculate the limit cycle of the nonlinear dynamic vehicle model.  ...  to the contact plane. (10) (11) Equations of motions for lateral stability analysis A dynamic model is established to analyze the lateral stability of a railway vehicle.  ... 
doi:10.1007/s12206-011-0421-0 fatcat:itugkm4pfvca3csxrlfvicbzmy

On the Stability and Agility of Aggressive Vehicle Maneuvers: A Pendulum-Turn Maneuver Example

Jingang Yi, Jingliang Li, Jianbo Lu, Zhaodu Liu
2012 IEEE Transactions on Control Systems Technology  
We present a dynamic stability and agility study of a pendulum-turn vehicle maneuver.  ...  The analysis and testing results show that during the pendulum-turn maneuvers, the professional driver operates the vehicle outside the stable regions of the vehicle dynamics to achieve superior agility  ...  Tsiotras of Georgia Institute of Technology and Dr. E. Velenis of Brunel University for sharing the testing data.  ... 
doi:10.1109/tcst.2011.2121908 fatcat:sf5p25hnhvbh5pbqwsjsxdvlja

Nonlinear analysis of actuator interventions using robust controlled invariant sets [chapter]

P Gáspár, B Németh
2016 The Dynamics of Vehicles on Roads and Tracks  
The paper analyzes the maximum robust Controlled Invariant Sets of lateral vehicle dynamical actuators. In the analysis the nonlinear polynomial Sum-of-Squares (SOS) programming method is applied.  ...  The maximum robust Controlled Invariant Sets approximate the regions of the tire side-slip angles in which the vehicle can be robustly stabilized by constrained control inputs.  ...  ACKNOWLEDGEMENT This paper was supported by the János Bolyai Research Scholarship of the Hungarian Academy of Sciences.  ... 
doi:10.1201/b21185-42 fatcat:ovtdqcht3bejxnzmz7ihm5l62i

Analysis and control of nonlinear actuator dynamics based on the sum of squares programming method

Balazs Nemeth, Peter Gaspar
2014 2014 IEEE/ASME International Conference on Advanced Intelligent Mechatronics  
The paper analyses the reachability characteristics of the brake system in order to determine its abilities for the entire vehicle system.  ...  Since the method can be applied to other actuators, a theory-based structure can be built for the coordination and reconfiguration of the actuators.  ...  A local stability analysis of polynomial systems and an iterative computation method for their region of attraction were presented in [11] .  ... 
doi:10.1109/aim.2014.6878084 dblp:conf/aimech/NemethG14 fatcat:qpvzw3rbzfbgrjwgmlto2zsw3u

Lateral Stability Analysis of Hypersonic Vehicle under Pressure Fluctuation by Solving Mathieu Differential Equation [article]

Qingkai Wei, Xun Huang
2012 arXiv   pre-print
In this Note, we propose a potential failure reason from the perspective of lateral stability analysis.  ...  We argue that the time variant pressure fluctuations, which are normally omitted in classical aircraft dynamics analysis, could not be neglected in dynamic analysis of hypersonic vehicles.  ...  A positive value of k implies instability and vice versa. Contours of k define the stability region. Figure 4 shows the stability regions at ω f =1Hz, 10Hz and 100Hz, respectively.  ... 
arXiv:1204.2490v1 fatcat:f4ecvuzawvf5nfocb3bvvt6wti

Longitudinal/Lateral Stability Analysis of Vehicle Motion in the Nonlinear Region

Keji Chen, Xiaofei Pei, Guocheng Ma, Xuexun Guo
2016 Mathematical Problems in Engineering  
We focus on the study of motion stability of vehicle nonlinear dynamics. The dynamic model combining with Burckhardt tire model is firstly derived.  ...  By phase portrait method, the vehicle stability differences of three cases, front wheels steering/four-wheel steering case, front/rear/four-wheel braking case, and high/low road friction case, are characterized  ...  Acknowledgments This work was supported in part by the National Natural Science Foundation of the People's Republic of China (Grant no. 51505354).  ... 
doi:10.1155/2016/3419108 fatcat:apgjxtnt3nfidav4nuzvwshuke

Page 509 of Journal of Spacecraft and Rockets Vol. 9, Issue 7 [page]

1972 Journal of Spacecraft and Rockets  
However, note that improved results can be obtained when 6 #0, but the estimates of the regions of exponential absolute stability are no longer quadratic.  ...  Finally, one obtains an estimate of the region of exponential absolute stability for the system under investigation as DQ..." = {x: x’Hx < 0.44} (42) where H is the matrix specified in Eq. (41).  ... 

Page 339 of Journal of Aircraft Vol. 26, Issue 4 [page]

1989 Journal of Aircraft  
., “Analysis of Lateral Stability for X-29 Drop Model Using System Identification Methodology,” AIAA Paper 87-2625-CP, Aug. 1987. *Murri, D. G., Nguyen, L. T., and Grafton, S.  ...  In particular, primary lateral stability and damping derivatives were identified throughout the maneuver ranges.  ... 

Coupled analysis of unsteady aerodynamics and vehicle motion of a road vehicle in windy conditions

Takuji Nakashima, Makoto Tsubokura, Mariano Vázquez, Herbert Owen, Yasuaki Doi
2013 Computers & Fluids  
These results clearly indicate the importance of estimating the unsteady aerodynamic forces in a vehicle motion analysis.  ...  The obtained results are compared with the results of a conventional quasi-steady analysis, and certain differences in the vehicle path and the yaw angle are identified.  ...  Vehicle motion in coupled analysis The time series of the lateral displacement and the yaw angle of the vehicle are plotted in Fig. 11 .  ... 
doi:10.1016/j.compfluid.2012.09.028 fatcat:dbhh2lhidfcdtizhy4c2rklama

Vehicle Side-Slip Angle Estimation of Ground Vehicles Based on a Lateral Acceleration Compensation

Kwanghyun Cho, Hyunwoo Son, Yafei Wang, Kanghyun Nam, Seibum Choi
2020 IEEE Access  
For vehicle stability control system to function properly under a variety of changing road conditions and driver's inputs, precise estimations of vehicle states are necessarily required.  ...  This paper proposes a novel methodology to estimate the side-slip angle which is used as an index of vehicle stability.  ...  Generally, the vehicle stability control system is a device which secures stability through observing the vehicle states and driver's inputs on the real-time basis.  ... 
doi:10.1109/access.2020.3028044 fatcat:s2yuxwb4bbhltpvdt3rohmodpe
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