Peculiarities of the Creating of Electromagnetic Vibration Drive Systems Ma-Thematical Models

Cherno, O.O.; Hurov, A.P.; Bugrim, L.

doi:10.30929/2072-2052.2018.3.43.45-51

Cited by 2 publications

(4 citation statements)

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“…Figure 5 shows the mechanics diagram of the oscillating system, the diagram of the vibration absorber with conical springs, and the stiffness characteristic of the spring. Notations defined in the figure: m 0 …m 2 are the mass of the working body, the intermediate platform and the moving part of the vibration absorber; c 0 …c 2 are the stiffness of shock absorbers, springs in the suspension of the intermediate platform and springs of the vibration absorber; b 0 …b 2 are loss coefficients in the corresponding springs; т 3 , с 3 and b 3 are the parameters reflecting the inertial, elastic and dissipative properties of the concrete mixture [11]; 1 is the DC motor; 2 is the reducer; 3 is the moving part of the vibration absorber; 4 is the conical springs; 5 is the press; 6 is the helical gear; х 1 , х 2 , х pr are the moving the intermediate platform, vibration damping mass and the press; F spr (х) is a reaction force of a conical spring depending on its deformation.…”

Section: Figmentioning

confidence: 99%

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Modeling of a Controlled Electromagnetic Vibration Drive With a Variable Resonant Frequency

Cherno¹,

Kozlov²

2023

Teh. elektrodin.

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The technology for the production of high-quality concrete products includes the vibration of the concrete mixture at various frequencies. For this, an electromagnetic vibration drive can be used, which has high reliability, durability and controllability. For its effective application, it is necessary to adjust the resonance frequency of the oscillating system in order to ensure the near-resonance mode of operation at different frequencies. This is possible by using devices with adjustable stiffness, in particular, controlled dynamic vibration absorbers with nonlinear elastic elements. In the article the electromagnetic, electromechanical, mechanical, and energy processes in a controlled vibration system, which includes an electromagnetic vibrator and a vibration absorber with conical springs, the stiffness of which is regulated by compression using a press, have been investigated. Using the circle-field method, a mathematical and simulation model of electromagnetic and electromechanical processes in the vibrator has been developed. For this purpose, numerical calculations of the magnetic field in the vibrator have been performed and, based on the obtained results, the functional dependences between the electromagnetic force, magnetic flux, magnetomotive force and the size of the air gap have been determined. A model of the mechanics of the oscillating system, processes in the vibration absorber press drive and processes in the control system has been also developed. The built simulation models were combined into a general model in the Simulink environment, by means of which the time diagrams of the processes have been obtained. The modeling results show that the system provides a smooth transition from one vibration frequency to another while maintaining the specified amplitude of the working body oscillations and near-resonance mode with high energy efficiency. References 12, figures 10, tables 3.

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Section: Figmentioning

confidence: 99%

“…The simulation model of the electromagnetic vibration drive control system was developed in [6]. In [11] it is represented by a separate Control system subsystem. We add to this subsystem the control circuit of the vibration absorber press (Fig.…”

Section: Figmentioning

confidence: 99%

Modeling of a Controlled Electromagnetic Vibration Drive With a Variable Resonant Frequency

Cherno¹,

Kozlov²

2023

Teh. elektrodin.

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“…Conclusions. The use of the circle-field method for modeling clamping electromagnets of mobile robots makes it possible to create a model of electromagnetic and electromechanical processes, that takes into account the spatial distribution of the magnetic field, nonlinearity of steel magnetization characteristics and eddy currents, adding new knowledge to [12,15,19,25]. The model is based on the numerically calculated dependences of flux linkage and electromagnetic force on the magnetomotive force and the value of the air gap, which were approximated and included in the equations of the electromagnet winding electric circuit.…”

Section: Development Of the Simulation Model And Calculation Of Elect...mentioning

confidence: 99%

“…Approximation of the magnetic field calculation results. The dependences  j (IW) can be approximated by hyperbolic functions [25]:…”

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Simulation of Mobile Robot Clamping Magnets by Circle-Field Method

et al. 2021

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There are a list of complicated tasks need to be solved to increase the working productivity and decrease working cost in modern shipbuilding and ship repair. Good results in solving those problems are shown whether automation with varied robots implementation. The mobile robots able to move and perform given technological operations on different-spaced ferromagnetic surfaces are equipped with own control systems, movers and clamping devices. Usually, reliability and safety of such robots are in direct dependence on designers’ adequate representation of their behavior that is described by mathematical description of separate parts or the robot in the whole to correct control problem solving. The article amply considers the process of the climbing mobile robot clamping electromagnet simulation model building using the improved circle-field method on the example of BR-65/30 clamping electromagnet. The model is built on the basis of interpolated dependences of flux coupling and electromagnetic force on the magnetomotive force and the value of the air gap obtained by numerical calculations of the magnetic field. The dynamic properties of the electromagnet are investigated and a family of its traction characteristics is obtained by the developed model, which can be used for automatic control of the robot clamping device. References 25, figures 5, tables 3.

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Peculiarities of the Creating of Electromagnetic Vibration Drive Systems Ma-Thematical Models

Cited by 2 publications

References 0 publications

Modeling of a Controlled Electromagnetic Vibration Drive With a Variable Resonant Frequency

Modeling of a Controlled Electromagnetic Vibration Drive With a Variable Resonant Frequency

Simulation of Mobile Robot Clamping Magnets by Circle-Field Method

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