Healthy speed control of belt conveyors on conveying bulk materials

He, Daijie; Pang, Yusong; Lodewijks, Gabriël; Liu, Xiangwei

doi:10.1016/j.powtec.2018.01.002

Cited by 55 publications

(33 citation statements)

References 6 publications

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“…The first group includes models for calculating the flow parameters of the conveyor line. When building models of this group are used: the finite element method (FEM) [6]; finite difference method (FDM) [7]; Lagrange equations [8]; aggregated equation of state [9,10,11]; equations for neural network layers [12]; system dynamics equations [13] and multiple regression equations [14][15][16]. The models of the first group are used in the tasks of operational planning of production activities of the enterprise.…”

Section: Conveyor Type Production Line Modelmentioning

confidence: 99%

“…The second group includes models for the force calculation of structural elements of the transport system [16][17][18][19][20][21][22]. Of particular practical interest are the models that determine the conditions for the destruction of the conveyor belt [6,8,[23][24][25][26][27][28][29]. This allows you to determine the design parameters of the conveyor belt and the dynamic load modes, which ensure the stable operation of the transport system.…”

Section: Conveyor Type Production Line Modelmentioning

confidence: 99%

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Hydrodynamic Model of Transport System

Pihnastyi

Khodusov

2020

EEJP

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A hydrodynamic model of production systems with a flow method of organizing production is considered. The basic macroparameters of the state of the production flow line and the relationship between them are determined. The choice of a lot of moment approximation for modelling the production line is justified. It is shown that the conveyor-type flow line is a complex dynamic system with distributed parameters. The boundary value problem is formulated for the longitudinal vibrations of the conveyor belt when the material moves along the transportation route. It is assumed that there is no sliding of material along the conveyor belt, and the deformation that occurs in the conveyor belt is proportional to the applied force (Hooke's elastic deformation model). The significant effect of the uneven distribution of the material along the transportation route on the propagation velocity of dynamic stresses in the conveyor belt is shown. When constructing the boundary and initial conditions, the recommendations of DIN 22101: 2002-08 were used. The mechanism of the occurrence of longitudinal vibrations of the conveyor belt when the material moves along the transportation route is investigated. The main parameters of the model that cause dynamic stresses are determined. It is shown that dynamic stresses are formed as a result of a superposition of stresses in the direct and reflected waves. Analytical expressions are written that make it possible to calculate the magnitude of dynamic stresses in a conveyor belt and determine the conditions for the occurrence of destruction of the conveyor belt. The characteristic phases of the initial movement of the material along the technological route are considered. The process of the emergence of dynamic stresses with the constant and variable acceleration of the conveyor belt is investigated. The dynamics of stress distribution along the transportation route is presented. It is shown that the value of dynamic stresses can exceed the maximum permissible value, which leads to the destruction of the conveyor belt or structural elements. The transition period is estimated, which is required to ensure a trouble-free mode of transport operation during acceleration or braking of the conveyor belt. The use of dimensionless parameters allows us to formulate criteria for the similarity of conveyor systems.

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Section: Conveyor Type Production Line Modelmentioning

confidence: 99%

Section: Conveyor Type Production Line Modelmentioning

confidence: 99%

Hydrodynamic Model of Transport System

Pihnastyi

Khodusov

2020

EEJP

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“…With the gradual popularization of pipe belt conveyor, energy consumption should be considered. Besides, speed control acts as an effective way to improve energy efficiency of belt conveyor; [1][2][3] in order to design excellent speed control algorithm, it is indispensable to establish a regression model of idler rotational resistance.…”

Section: Introductionmentioning

confidence: 99%

A regression model for prediction of idler rotational resistance on belt conveyor

Lü

2019

Measurement and Control

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This paper presents a regression model for prediction of idler rotational resistance on belt conveyor. The advantage of the regression model is that it is created according to the real experimental measurement. Besides, the predicted model corresponds with real operational parameters, such as radial force, rotational speed and measurements, conducted via using a laboratory test facility; several criteria have been used to verify the presented regression model. Finally, by analyzing the regression model combined with influence of radical force and rotational resistance on idler rotational resistance, this paper presents an operable control ideal to achieve energy-saving.

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“…That is, the maximum jerk must be kept within a reasonable range to ensure a soft impact of motor on the belt conveyor [1][2][3][4][5][6]. Hence the speed curve should be S-shaped and the output smooth [7][8][9][10]. At the same time, it is necessary to ensure high efficiency and low energy consumption at startup.…”

Section: Introductionmentioning

confidence: 99%

Cosine‐Trapezoidal Soft‐Starting Control Strategy for a Belt Conveyor

Ji¹,

Miao²,

Li³

2019

Mathematical Problems in Engineering

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To improve the soft-starting performance of a belt conveyor, a cosine-trapezoidal soft-starting control strategy is proposed. With this strategy, the speed curve for soft-starting is S-shaped, continuous, and smooth. The acceleration and jerk are also continuous and smooth without discontinuities. The time-interval ratio of the horizontal and cosine curves can be changed via a single parameter setting, so that the strategy can be modified to meet different practical needs. In this paper, the soft-starting control strategy of cosine trapezoid is analyzed and simulated based on current international and domestic standards. The results show that compared with the classical soft-starting control strategy, the cosine-trapezoidal soft-starting control strategy enables the belt conveyor to start at its highest efficiency. Moreover, the energy savings are obvious, the safety performance is good, and the controllable performance is excellent.

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Healthy speed control of belt conveyors on conveying bulk materials

Cited by 55 publications

References 6 publications

Hydrodynamic Model of Transport System

Hydrodynamic Model of Transport System

A regression model for prediction of idler rotational resistance on belt conveyor

Cosine‐Trapezoidal Soft‐Starting Control Strategy for a Belt Conveyor

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