Measurement of the ferromagnetic component content in the ore suspension solid phase

Porkuian, Olga; Morkun, Vladimir; Morkun, Natalia

doi:10.1016/j.ultras.2020.106103

Cited by 4 publications

(3 citation statements)

References 18 publications

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“…To avoid this, one should use an algorithm controlling ultrasonic cleaning, which will consider contamination of a body in terms of the body's separate areas. Assessing this condition through analysis of ultrasonic reflections in the bath is suggested because ultrasonic measurements provide high-quality and fast evaluation of space-distributed parameters (Porkuian et al, 2019(Porkuian et al, , 2020Morkun et al, 2015a). A threedimensional (3D) interval type-2 (IТ2) fuzzy logic controller, which is essentially created to control systems with distributed nonlinear parameters, is applied to the process of determining the establishment of a distributed controlling action (Li et al, 2007;Zhang et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Fuzzy Control of Ultrasonic Cleaning

Morkun

Kravchenko

2021

Acta Mechanica Et Automatica

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Consideration of ultrasonic cleaning as a process with distributed parameters enables reduction of power consumption. This approach is based on establishment of control over the process depending on fixed values of ultrasonic responses in set points. The initial intensity of radiators is determined using a three-dimensional (3D) interval type-2 fuzzy logic controller essentially created for processes with distributed parameters, as well as complex expert evaluation of the input data. The interval membership functions for the input and output data consider the space heterogeneity of ultrasonic cleaning. A rule base is formed, which is 2D and not dependent upon the number of input and output parameters. A model illustrating ultrasonic cleaning with a 3D interval type-2 fuzzy logic controller is designed. Comparative analysis of the output parameters of the proposed model and the traditional method indicates an increase in the energy efficiency by 41.17% due to application of only those ultrasonic radiators that are located next to the contamination.

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Section: Introductionmentioning

confidence: 99%

Three-Dimensional Fuzzy Control of Ultrasonic Cleaning

Morkun

Kravchenko

2021

Acta Mechanica Et Automatica

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“…Unfortunately, in Ukraine the technology of AR in the educational environment for training future teachers is almost absent. Despite the significant potential of AR for laboratory studies in Science and Math in secondary and high school in secondary and high school [4,5,6,7,8,9,10], for the training of future engineers [11,12,13], for extracurricular educational and research activities of students [14,15], for foreign students' adaption [16] and even for teaching global reading of preschool children with autism spectrum disorders [17].…”

Section: Introductionmentioning

confidence: 99%

The course “Development of virtual and AR software” for STEM teachers

Mintii

2020

SHS Web Conf.

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The article looks into the experience of development and using of learning resources for design of virtual reality (VR) and augmented reality (AR) systems for future STEM teachers. Unity environment for visual design, Visual Studio as a programming environment, platform of VR (Google VR) and AR (Vuforia) were chosen for development of teaching materials. The article describes the content of the created course. The research analyzes the impressions of the course participants. The research data were collected using interviews as the method of qualitative data collection. To conclude, the created course promotes the development of digital competence in the design and use of innovative learning tools.

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“…Ultrasonic nondestructive measurement is widely applied to quantifying a large number of mechanical and structural properties of solids [11,12] as well as for assessing the state of the object subjected to ultrasonic cleaning. Mechanical prop erties of bodies have been evaluated by means of ultrasonic measurements for a long time in various industries, this trend continuing nowadays [13,14] indicating its high efficiency and accuracy. Yet, complexity of physical interpretation of ultra sound measurement results is one of the main constraints for their application.…”

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confidence: 99%

Evaluation of ultrasonic cleaning process

Morkun¹,

Kravchenko²,

Кравченко³

et al. 2021

Nauk. visn. nat. hirn. univ.

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Purpose. To establish relationship between intensity of ultrasonic cleaning and an ultrasonic response fixed at a set point. To determine the influence of liquid contamination on this signal. To specify parameters of an ultrasonic signal to evaluate the course of cleaning a preset section of a body. To define limiting values indicating efficiency of ceasing the cleaning process. Methodology. The research is based on simulation of ultrasonic wave propagation in the heterogeneous environment and subsequent analysis of the signals by using software. Findings. Dependences are established to form evaluation of the course of the cleaning process by parameters of the ultrasonic response. It is found that both the bodys state and that of the liquid affect the ultrasonic response obtained by the sensor at the set point during ultrasonic cleaning. With high contamination (>30%) the state of the liquid becomes a critical factor for forming the signal of the ultrasonic response. With that, there is an abrupt reduction of threshold signal arrival time and increase in the main amplitude, which is to be one of indicators of ceasing the cleaning process in case of its inefficiency. With lower contamination, suspended contaminant particles only correct the signal to some extent without distorting it. There is a relationship between reduction of contamination, the arrival time of threshold signal, on the one hand, and the value of the main amplitude and the 2nd and 3rd-order nonlinearity coefficients, on the other hand. The arrival of the threshold value of the signal is the major parameter determining intensity of cleaning, i.e. reduction of contaminant thickness, which is determined by the value of the main amplitude of the signal and the 2nd and 3rd-order nonlinearity coefficients. Originality. For the first time, methods for evaluating the course of the ultrasonic cleaning process by analyzing ultrasonic responses at a specified point have been developed. Practical value. To consider spatial distribution of the ultrasonic cleaning process, its control is to be based on evaluating the bodys contamination in several preset points. To implement this, the character of dependences between changes in contamination of the body section and parameters of the fixed ultrasonic response is determined. Impacts are considered of suspended contaminant particles in the liquid on the signal analyzed. The observed relationship will provide the basis for building the spatially distributed control over ultrasonic cleaning considering the cleaned bodys state.

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Measurement of the ferromagnetic component content in the ore suspension solid phase

Cited by 4 publications

References 18 publications

Three-Dimensional Fuzzy Control of Ultrasonic Cleaning

Three-Dimensional Fuzzy Control of Ultrasonic Cleaning

The course “Development of virtual and AR software” for STEM teachers

Evaluation of ultrasonic cleaning process

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