Geometric-based tyre vertical force estimation and stiffness parameterisation for automotive and unmanned vehicle applications

Wilson, Graeme N.; Ramírez-Serrano, Alejandro; Sun, Qiao

doi:10.1080/00423114.2016.1249378

Cited by 6 publications

(4 citation statements)

References 8 publications

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“…To evaluate the performance of the compound under real-world conditions, the loss factor of the vulcanizates must take the actual deformation of the compound into consideration. Thus, energy dissipation △E was used to evaluate a strain period, and was expressed in Equation (5).…”

Section: A-1 A-2 A-3 A-4 A-1 A-2 A-mentioning

confidence: 99%

“…However, in consideration of safety, the advantages of running flat tire are gradually accepted by the market. In 2001, the 4th generation of the BMW 7 Series launched the market, and was the first model of mass-produced vehicles to be equipped with run-flat tires [4][5][6][7][8], which represents that the run-flat tire has officially entered the original market.…”

Section: Introductionmentioning

confidence: 99%

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Optimize Design of Run-Flat Tires by Simulation and Experimental Research

et al. 2021

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In this study, the two key factors affecting the thermal performance of the insert rubber and stress distribution on the tire sidewall were analyzed extensively through various performance tests and simulations to promote the development of run-flat tires. Four compounds and two structures of insert rubber were designed to investigate the effects of heat accumulation and stress distribution on durability testing at zero pressure. It was concluded that the rigidity and tensile strength of the compound were negatively correlated with temperature. The deformation was a key factor that affects energy loss, which could not be judged solely by the loss factor. The stress distribution, however, should be considered in order to avoid early damage of the tire caused by stress concentration. On the whole, the careful balance of mechanical strength, energy loss, and structural rigidity was the key to the optimal development of run-flat tires. More importantly, the successful implementation of the simulations in the study provided important and useful guidance for run-flat tire development.

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Section: A-1 A-2 A-3 A-4 A-1 A-2 A-mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimize Design of Run-Flat Tires by Simulation and Experimental Research

et al. 2021

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“…The error is within the allowable range. The following prediction research can be established based on equation 16 (Wilson et al, 2017).…”

Section: Evaluation Indexmentioning

confidence: 99%

H_∞ control of anti-rollover strategy based on predictive vertical tire force

Zhao

Lin

Wang

2017

Transactions of the Institute of Measurement and Control

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The mainstream rollover evaluation index, lateral load transfer rate (LTR), is commonly used in the rollover control field. However, it is not instant enough to reflect the rollover tendency since it can only reflect the load transfer rate of one side wheels while single rear wheel leaves the ground first during rollover happens. In order to monitor the rollover tendency more instantly and improve the reliability of anti-rollover control system, a new evaluation index called predictive vertical tire force (PVTF) is proposed, which is based on the single vertical tire force and merges both iterative prediction and derivative prediction methods. Meanwhile, an optimization is taken to solve the contradiction between prediction time and deviation. Secondly, using the PVTF as the measurement output, an anti-rollover control system based on active steering is established in this paper. In order to achieve the desired tracking effect and anti-jamming capability, a two-way H∞ controller is adopted in the anti-rollover control system. Lastly, the simulation results of J-turn condition and NHTSA (national highway traffic safety administration) condition are conducted and the results indicate that the anti-rollover control system has strong stability and robustness. Meanwhile, benefit from the pre-warning function of PVTF, the controller is triggered earlier and the vertical tire forces of four wheels are controlled to be positive all the time, which is beneficial for handling stability.

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“…Solving an inverse problem to estimate the excitation forces based on the dynamic system response is frequently employed and several methods are proposed in the literature. 15,[17][18][19] Nordstrom 20 has used a dynamic programming algorithm to solve the least squares problem by minimizing the regularized squared error function and estimating the force history. The Sum of weighted accelerations (SWA) technique was developed by Carne and successfully applied to the force estimation problem.…”

Section: Introductionmentioning

confidence: 99%

Effective wind speed estimation based on a data-driven model of wind turbine tower deflection

Nasrabad

Hajnayeb

Sun

2021

Proceedings of the Institution of Mechanical Engineers, Part C:

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The deflection of the wind turbine tower can provide us with rich information about the effective wind speed. In this paper, a new method for effective wind speed estimation is proposed based on tower deflection. The tower vibration model is derived and a subspace identification method is used to identify the model parameters. An online estimator of aerodynamic thrust force based on the identified tower model is designed and then implemented using a Kalman filter together with a recursive least squares algorithm. The estimated aerodynamic thrust force is then used as an input to a neural network estimator, which is trained to invert the aerodynamic thrust force equation and estimate the effective wind speed. In order to show the performance of the proposed estimator, the estimated thrust force and wind speed are compared and verified with a third-party simulation data of a 1.5 MW wind turbine. The comparison shows close agreement between their values.

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Geometric-based tyre vertical force estimation and stiffness parameterisation for automotive and unmanned vehicle applications

Cited by 6 publications

References 8 publications

Optimize Design of Run-Flat Tires by Simulation and Experimental Research

Optimize Design of Run-Flat Tires by Simulation and Experimental Research

H_∞ control of anti-rollover strategy based on predictive vertical tire force

Effective wind speed estimation based on a data-driven model of wind turbine tower deflection

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Geometric-based tyre vertical force estimation and stiffness parameterisation for automotive and unmanned vehicle applications

Cited by 6 publications

References 8 publications

Optimize Design of Run-Flat Tires by Simulation and Experimental Research

Optimize Design of Run-Flat Tires by Simulation and Experimental Research

H∞ control of anti-rollover strategy based on predictive vertical tire force

Effective wind speed estimation based on a data-driven model of wind turbine tower deflection

Contact Info

Product

Resources

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H_∞ control of anti-rollover strategy based on predictive vertical tire force