In this paper, we consider an approach to modeling the process of vibrating plate interaction with soil, taking into account the elements of the method of continuous non-destructive testing of the quality of compaction. For a theoretical description of a dynamic system model, the state space method is used. A mathematical model is obtained on the example of a three-mass stacker vibration plate system. A simulation model of the process under study is constructed in the language of the MATLAB/Simulink program. The results of a computer experiment are presented.
The article deals with the research results of a concept for a new method of continuous non-destructive control of asphalt road pavements compaction based on the analysis of the vibration and force state of working bodies of road construction machines as well as the corresponding algorithm for data conversion and intelligent prediction of compaction quality. The definition of the concept “cyber-physical road construction system” is proposed. A scientific problem as well as the corresponding purpose and objectives of the study are formulated. The theoretical background of the continuous compaction control method for pavers is considered. The structure of the considered cyber-physical road construction system is determined.
In this paper, based on the state space method, a mathematical model of the “stacker-mix” dynamic system as an object of continuous non-destructive testing of compaction of asphalt-concrete mix is obtained. The system of differential equations takes into account the structural elements of the working body of the stacker and the medium to be sealed. The compacted medium is described by a rheological model of an elastic-viscous body. A simulation model of a dynamic system is obtained in the MATLAB/Simulink program. The results of numerical simulation are presented.
The research results of the study of the system of continuous control of asphalt concrete compaction are presented. The comprehensive method for controlling asphalt concrete compaction based on the continuous measurement of key process parameters of the rolling process of the mixture: thermal condition, thickness of the laid layer, amplitude-frequency characteristics of the vibration roller system and asphalt concrete bed. The authors present the conditions for performing continuous control of asphalt concrete and the results of experimental studies of asphalt concrete rolling. The regularities of changes in the ultimate strength of mixtures are presented. The graphs of the speed and spectra of vibration acceleration of the drum of the vibratory roller have been obtained, graphs of the dependence of the integral indicators relative to the coefficients of compaction of asphalt concrete have been constructed. The acquired knowledge allows improving the methods for controlling the asphalt concrete mix. Based on the performed studies, the authors propose to use the method of continuous controlling the state of asphalt concrete pavement, as the difference between the specified parameters taken from the sensors, which provides the required compaction coefficient.
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