Hybrid thermal modeling of tubular linear oscillating motor based on sectionalized equivalent thermal circuit

Zhang, Jiao; He, Peijun; Yan, Liang; Liang, Huisheng; Wang, Tianyi

doi:10.3233/jae-160023

Cited by 9 publications

(3 citation statements)

References 16 publications

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“…In such engines, the secondary element can also be the working body of the technological machine itself (Ganesh Sampath et al, 2016;Pathan et al, 2017;Vinod, 2017). Therefore, electrical energy is immediately converted into the translational motion of the working body (Alanis et al, 2015;Jiao et al, 2017;Lim et al, 2017). The electric motor efficiency factor in such drives is equal to the efficiency factor of an electric drive.…”

Section: Introductionmentioning

confidence: 99%

Effective technical ways to improve the vibro-centrifugal separator electric drive for grain cleaning

Linenko

Khalilov

Kamalov

et al. 2021

J Agricult Engineer

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Grain production economic efficiency mostly depends on the use of energy-efficient, resource-saving technological equipment that can ensure a high-quality technological process. In this regard, this paper considers ways to improve the vibrating drives of vibration-centrifugal grain separators which have a complex design and involve high operating expenses (the life of vibrator bushing does not exceed 180±20 hours). A linear induction motor was used in this study as a vibrating drive, which directly forwarded working body movement without using any movement converters. This type of motor together with elastic elements helps to implement energy-efficient electric vibrating motion with adjustable vibration parameters. The mathematical model of the vibro-centrifugal grain separator with a linear motor was developed. The model was implemented in the environment of MatLab (Simulink) object-visual modelling, which showed the correlations of the working body vibration parameters with the drive kinematic parameters. The suitability of the model was proved experimentally. The difference between the experimental data and the data obtained by mathematical modelling does not exceed 6%. The comparative assessment results showed that the maintenance intervals increased by 37.8% in the project version compared to the basic version. The proposed technical solution made it possible to obtain the vibrational motion of the centrifuge working body using the linear induction electric motor without the need for a control unit to connect and disconnect it periodically from the mains. This can reduce the starting currents in the inductor windings and increase the reliability of the installation. Thanks to the use of the linear induction electric motor in the vibrating drive of the vibro-centrifugal separators vibrating drive, it is also possible to save metal.

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Section: Introductionmentioning

confidence: 99%

Effective technical ways to improve the vibro-centrifugal separator electric drive for grain cleaning

Linenko

Khalilov

Kamalov

et al. 2021

J Agricult Engineer

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show abstract

“…Li et al [18] studied the thermal characteristics of T-type linear ultrasonic motor with longitudinal vibration transducer under no-load by measuring the surface temperature of the driving pin, piezoelectric ceramics and end cover with a thermal imager. Jiao et al [19] proposed a nodal thermal modeling method based on piecewise equivalent thermal loop, which was used to analyze the steady and transient thermal states of tubular linear oscillation motors. However, the nodal thermal modeling method of segmented equivalent thermal loop is much more complex than the finite element modeling method.…”

Section: Introductionmentioning

confidence: 99%

Thermal Error Model of Linear Motor Feed System Based on Bayesian Neural Network

et al. 2021

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The linear motor feed system has been in service in complex working conditions for a long time, thus causing the nonuniform distribution of the temperature field distribution. Thus, thermal error has become a key factor affecting system motion accuracy. To maximize the accuracy and efficiency of thermal error compensation for linear motor feed system, an improved modeling method for the thermal error of the linear motor feed system based on Bayesian neural networks is proposed in combination with the strong generalization performance and avoidance of overfitting of Bayesian neural networks. And the specific modeling ideas are as follows: Firstly, the X-Y cross-type two-axis linear motor feed system is as the test object. Aiming at the slow convergence , over fitting and under fitting problems of traditional neural network, Bayesian neural network is used to model the thermal error of linear motor feed system .Secondly, In order to avoid the influence of multicollinearity data on the final results, the grey relation analysis method is used to screen the temperature measuring points, and the data with large relation degree is selected for modeling to ensure the prediction accuracy of neural network. Thirdly, and the temperature variables of sensitive points and thermal positioning errors are taken as data input samples. Fourthly, a Bayesian neural network model is established. Fifthly, the hyperparameters of the Bayesian neural network is determined by a calculating method of Hessian matrix by Gauss Newton approximation. And finally, a thermal error prediction model is established. The comparison and analysis with the neural network constructed by ordinary Levenberg-Marquardt algorithm after a series of experimental demonstrations see that the prediction accuracy of the proposed method can be enhanced by up to 10%. It also shows that the prediction model has the advantages of high precision, strong generalization ability, strong anti-disturbance ability and strong robustness, etc. Therefore, the prediction model is expected to be widely used in the prediction and compensation of thermal error of the feed system of high-speed CNC machine tools in practical machining occasions.

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“…Moreover, a multi-discipline coupled thermomechanics model for the solenoid valve was constructed with the 2D axial symmetric FEM, and the temperature distribution and thermal deformation of the solenoid valve with different currents under two operating environments were simulated [19]. A node thermal modelling method based on sectionalized equivalent thermal circuit was developed to analyse steady and transient thermal status of a tubular linear oscillating motor [20]. Additionally, more researches were reported on the energy consumption of EMLA, which provides a basis for thermal modelling and analysis [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Multiphysics methodology for thermal modelling and quantitative analysis of electromagnetic linear actuator

Tan

Liu

et al. 2019

Smart Mater. Struct.

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Multiphysics methodology is a preferred tool for the design and optimization of electromagnetic linear actuators (EMLA). In this paper, a multiphysics method was proposed, which uses the non-simplified energy consumption distribution as the heat source for temperature field calculation, adjusts the material properties by temperature, and considers the interaction between motion (including impact) and loss. Then comprehensive experiments and quantitative analysis were carried out. The results show that the errors between simulated and experimental results of indices such as landing velocity, input circulating energy, iron loss and temperature rise of prototype were less than 5%. The prototype's total iron loss was decreased by 57.6% with fixed armature and dynamic response time was decreased by 10.4% without eddy current compared with the normal condition. This result validated the precision and necessity of the coupling model. In addition to being applied to EMLA, the proposed methodology can be used for analysis and design of a wide range of electromagnetic actuators.

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Hybrid thermal modeling of tubular linear oscillating motor based on sectionalized equivalent thermal circuit

Cited by 9 publications

References 16 publications

Effective technical ways to improve the vibro-centrifugal separator electric drive for grain cleaning

Effective technical ways to improve the vibro-centrifugal separator electric drive for grain cleaning

Thermal Error Model of Linear Motor Feed System Based on Bayesian Neural Network

Multiphysics methodology for thermal modelling and quantitative analysis of electromagnetic linear actuator

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