Diagnose Method Based on Spectral Analysis of Measured Parameters

Vilau, Radu; Marinescu, Marin; Alexa, Octavian; Truta, Marian; Vinturis, Valentin

doi:10.4028/www.scientific.net/amr.1036.535

Cited by 5 publications

(3 citation statements)

References 3 publications

(7 reference statements)

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“…The maximum acceleration performances are obtained when the engine is working at the total load [6]. Similar researches of the dynamic performances simulation are presented in the papers [2,8]. The friction modelling constitutes the base of all clutch models.…”

Section: Introductionmentioning

confidence: 87%

The simulation of the dynamic behaviour for an elastic mechanical transmission of passenger car

Dobre

2017

BUP-JAUTO

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Abstract. In the last years the engine-transmission system was optimized substantially with the purpose to obtain advanced dynamic performances. The transmission must cooperate with the propulsion system in a perfect way to obtain maximum acceleration performances and a low fuel consumption. This paper presents an extensive study of the acceleration performances of an automobile equipped with a mechanical transmission, the study is accomplished through numerical simulation. The numerical simulations were made with the Matlab-Simulink program. The article analyses the dynamic behaviour of an elastic mechanical transmission. The obtained results are similar with the results given by the constructor. The conclusion of the study is that the simulation model presented in this paper can be successfully used for all the automobiles equipped with a mechanical transmission for a fast analyse of the acceleration performances, as well can be used to optimize these performances.

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Section: Introductionmentioning

confidence: 87%

The simulation of the dynamic behaviour for an elastic mechanical transmission of passenger car

Dobre

2017

BUP-JAUTO

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“…The processed data [ 26 , 27 ] allow for the graphical tracing of the variation of the angular velocity, during the acceleration and deceleration of the transmission parts, in the form of variation of the angular velocity of the drive wheel ( Figure 20 a–e).…”

Section: Experimental Methods Used To Determine the Mass Moment Ofmentioning

confidence: 99%

Considerations for Determining the Coefficient of Inertia Masses for a Tracked Vehicle

Alexa

Coropeţchi

Vasile

et al. 2020

Sensors

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The purpose of the article is to present a point of view on determining the mass moment of inertia coefficient of a tracked vehicle. This coefficient is very useful to be able to estimate the performance of a tracked vehicle, including slips in the converter. Determining vehicle acceleration plays an important role in assessing vehicle mobility. Additionally, during the transition from the Hydroconverter to the hydro-clutch regime, these estimations become quite difficult due to the complexity of the propulsion aggregate (engine and hydrodynamic transmission) and rolling equipment. The algorithm for determining performance is focused on estimating acceleration performance. To validate the proposed model, tests were performed to determine the equivalent reduced moments of inertia at the drive wheel (gravitational method) and the main components (three-wire pendulum method). The dynamic performances determined during the starting process are necessary for the validation of the general model for simulating the longitudinal dynamics of the vehicle. Finally, the differential and algebraic equations of the virtual model approximate more accurately the actual process of the operation of the vehicle. The virtual model, through the data obtained from the simulation process, allows for the determination, indirectly, of the variation of the mass moment of inertia coefficient and its expression of approximation.

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“…The imbalance produces a periodic vibration signal, with the same amplitude at each rotation of the shaft [1,3].…”

Section: Experimental Researchmentioning

confidence: 99%

Diagnosis of mechanical parts by analyzing vibrations measured during operation

Udrea

Voicu

Stoica

et al. 2022

IOP Conf. Ser.: Mater. Sci. Eng.

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The present study aims to measure vibrations in machine parts, perform the corresponding spectral analysis and, finally, obtain a diagnosis. The test was performed on a cardan shaft, measuring the vibrations with a uni-axial accelerometer, and follow-up, with the use of the Adash acquisition board, data were recorded and analyzed. It is known that each mechanical part has its own vibration frequency and that the operation at critical speed determines the occurrence of the resonance phenomenon. When this phenomenon appears, damage occurs, which is difficult to remedy and in some cases could endanger the safety of operators. Therefore, it was necessary to perform modal analysis in the Ansys program in order to be able to analyze the own vibration modes of the cardan shaft.

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Diagnose Method Based on Spectral Analysis of Measured Parameters

Cited by 5 publications

References 3 publications

The simulation of the dynamic behaviour for an elastic mechanical transmission of passenger car

The simulation of the dynamic behaviour for an elastic mechanical transmission of passenger car

Considerations for Determining the Coefficient of Inertia Masses for a Tracked Vehicle

Diagnosis of mechanical parts by analyzing vibrations measured during operation

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