On-board estimation of dynamic tyre forces from optically measured tyre carcass deflections

Tuononen, Ari J.

doi:10.1504/ijhvs.2009.027139

Cited by 47 publications

(24 citation statements)

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“…During FRICTI@N, tyre sensor hardware was refreshed and algorithms were made more robust and towards real-time operation. A truck sensor was also introduced [ 17 ]. The sensor was also tested under aquaplaning conditions, where the transition point from the hydrodynamic aquaplaning zone to the viscous aquaplaning was measured [ 18 ].…”

Section: Optical Tyre Sensor (Ots) Conceptmentioning

confidence: 99%

Vehicle Lateral State Estimation Based on Measured Tyre Forces

Tuononen¹

2009

Sensors

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Future active safety systems need more accurate information about the state of vehicles. This article proposes a method to evaluate the lateral state of a vehicle based on measured tyre forces. The tyre forces of two tyres are estimated from optically measured tyre carcass deflections and transmitted wirelessly to the vehicle body. The two remaining tyres are so-called virtual tyre sensors, the forces of which are calculated from the real tyre sensor estimates. The Kalman filter estimator for lateral vehicle state based on measured tyre forces is presented, together with a simple method to define adaptive measurement error covariance depending on the driving condition of the vehicle. The estimated yaw rate and lateral velocity are compared with the validation sensor measurements.

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Section: Optical Tyre Sensor (Ots) Conceptmentioning

confidence: 99%

Vehicle Lateral State Estimation Based on Measured Tyre Forces

Tuononen¹

2009

Sensors

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“…This treatment decreases the accuracy when the tire rolls on uneven roads. In addition, accelerometers (Braghin et al., ) or optical sensors (Tuononen et al., ) were embedded in the air cavity in order to measure the tire force. These methods have been shown to be appropriate; however, some disadvantages of Cheli's method were observed.…”

Section: Introductionmentioning

confidence: 99%

Rapid Impact Testing and System Identification of Footbridges Using Particle Image Velocimetry

Tian

Zhang

2018

Computer aided Civil Eng

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The rapid impact testing of bridges contains unique advantages. For example, structural parameters, including frequency response function and structural flexibility matrix can be identified; however, additional impact-testing instruments are required to excite a bridge, restricting the efficiency of the measurement strategy in terms of experimental cost and time. In this paper, a particle image velocimetry-based method is proposed for the rapid impact testing and system identification of footbridges under pedestrian excitations. The proposed method has shown promising features: (1) pedestrian load is utilized for the impact excitation of footbridges, which is more convenient than the conventional impacttesting method with additional excitation devices; (2) the human-induced impact forces under varying jumping scenarios are calculated from image sequences of human motions acquired by a single camera with its noncontact and target-less characteristics; and (3) both humaninduced impact forces (inputs) and structural responses (outputs) are employed to identify more modal parameters (i.e., scaling factors, modal mass, and structural flexibility). The robustness of the proposed method was successfully validated by a laboratory test of a simply supported beam and field testing of a cable-stayed footbridge. The proposed method not only could improve

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“…Several studies (Hong et al, 2013;Zhang et al, 2013;Tuononen, 2009) have demonstrated the ability of tire sensing to reveal the mechanism of generating tire force and to estimate corresponding forces. In a previous study , an optical measurement system using a one-dimensional laser sensor was developed to investigate the rolling resistance mechanism through tread deformation measurements on a passenger car tire.…”

Section: Introductionmentioning

confidence: 99%