Problems in Assessing Road Vehicle Driveability Parameters Determined with the Aid of Accelerometer

Jantos, Jerzy; Brol, S.; Mamala, Jarosław

doi:10.4271/2007-01-1473

Cited by 14 publications

(16 citation statements)

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“…The engine excited noises are significantly greater (a=28.6*10 -3 m/s 2 ) than the sensors one (fig 4b.). It depend of engine type (gasoline or diesel), rotation speed, number of cylinders, engine suspension, and unbalanced masses [1,2,3,4]. Road irregularities dependent accelerations and both tilt ratio changes can disturb the acceleration measurement because they generate additional accelerations whose value is dependent on road roughness, but its peak-to-peak amplitude is more than ten times greater (a=0.3 m/s 2 ) than engine's ones as shown on figure 5.…”

Section: Resultsmentioning

confidence: 99%

“…Data, gathered during test was written to mass memory. Later they can be used as input for further processing [2,3,4].…”

Section: Test Procedures and Equipmentmentioning

confidence: 99%

“…T To eliminate the effect of total value of resistance to motion forces (sum of F a and F r ) on test results, special procedure was proposed, which consists of two phases [1,2,3,4]. In the first one, car should accelerate with highest possible intensity and in the second it freely decelerates affected only by drag forces.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Suppression of disturbances during road test for improving powertrain parameters measurement

Brol

Prażnowski

2011

Electrodynamic and Mechatronic Systems

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Section: Resultsmentioning

confidence: 99%

“…Data, gathered during test was written to mass memory. Later they can be used as input for further processing [2,3,4].…”

Section: Test Procedures and Equipmentmentioning

confidence: 99%

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Suppression of disturbances during road test for improving powertrain parameters measurement

Brol

Prażnowski

2011

Electrodynamic and Mechatronic Systems

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“…Such a classification is very important when, for example, you want to carry out diagnostics of the chassis, suspension or drive system of a vehicle in road conditions. The description of such diagnostics in real road conditions is the subject of many authors’ studies [ 27 , 28 , 29 ]. Such a method will allow one to determine the measuring window for the vertical acceleration signal of the diagnosed vehicle with good road surface condition.…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Road Surface Condition with Longitudinal Acceleration Signal of the Car Body

Prażnowski

Mamala

Śmieja

et al. 2020

Sensors

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On the basis of road tests, the authors assessed the feasibility of the vehicle body acceleration values for the purposes of assessing road surface characteristics in terms of its roughness. Short-term Fourier Transform (STFT) was used for the analysis of the recorded signal. The spectra obtained in successive frequency bands demonstrate the amplitudes originating from the natural vibrations of the rolling wheel and forces resulting from the interaction with the road roughness. The article focuses on the relationships between the road roughness and the ratios of individual amplitudes in a specific frequency band of the vehicle body acceleration values. Amplitude values derived on the basis of successive windows were averaged for analogous, arbitrarily assumed local frequency bands. The value characterizing the road surface condition provided the information regarding the mean amplitude value in specific frequency ranges depending on the instantaneous velocity of the car body and the condition of the road surface on which it was moving. In cases where the road was free of any visible roughness, the obtained mean amplitude value in the analyzed spectrum window, for the adopted vehicle velocity range from 50 km h to 100 km/h, did not exceed 0.02 m/s2. It was also demonstrated that the road surface roughness leads to an increase in the mean amplitude value from 0.07 m/s2 to 0.16 m/s2.

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“…This type of vibrations result in the deterioration of the comfort of driving and can lead to the weakening of the driver's concentration on driving and consequently, affect safety on the road [5,2,6]. The phenomenon of the wheel imbalance is also perceived by the driver by vibrations of the driving wheel as well the sound that is heard as rumbling from the tires.…”

Section: Introductionmentioning

confidence: 99%

Use of Fourier transform for defining diagnostic parameters of car wheel

Augustynowicz

Prażnowski

2011

Electrodynamic and Mechatronic Systems

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In this paper the problem of wheel imbalance is taken into consideration. An approach is presented based on spectral analysis of acceleration measured on vehicle chassis. The goal is to work out an analytical and theoretical basis for design of relatively cheap diagnostic devices for diagnostic during drive in normal road traffic conditions. It was proven that the chassis vibration amplitude are correlated with wheel imbalance and the frequency at which main peak occurs in amplitude spectrum (AS) and power spectrum (PS) spectrum is dependent on the vehicle speed. This indicated relation with acceleration signal spectral characteristic and wheel imbalance.

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Problems in Assessing Road Vehicle Driveability Parameters Determined with the Aid of Accelerometer

Cited by 14 publications

References 1 publication

Suppression of disturbances during road test for improving powertrain parameters measurement

Suppression of disturbances during road test for improving powertrain parameters measurement

Assessment of the Road Surface Condition with Longitudinal Acceleration Signal of the Car Body

Use of Fourier transform for defining diagnostic parameters of car wheel

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