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تشنغتشو ، الصين
theory eccentric motor vibrators
Self-Synchronization and Vibration Isolation Theories in
The results show that the synchronous state of the eccentric rotors is mainly effected by installation angle of the motors; the ability of the vibration isolation is Abstract. In a vibrating screen machinery, two eccentric rotors (ERs) are actuated by swung and fixed motors. When the working efficiency of vibrating screens is Synchronization implementation of two eccentric rotors
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Synchronization and Stability of a Nonlinear Vibrating
In engineering, however, some machines are designed and operated by utilizing vibrations, such as vibrating feeders, vibrating conveyors, probability screen, This chapter describes several types of vibrators (shakers) which are currently used either in reliability testing, fatigue testing and instrument calibration or for 6 Vibration Exciters Springer
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Composite synchronization of a four eccentric rotors driven
Composite synchronization is a combination of self-synchronization and controlled synchronization. Based on fully considering the model of the induction motor, The eccentric masses and motor powers have an impact on the output torque and electromagnetic torque, respectively, which further affects the system’s Stability and Sommerfeld Effect of a Vibrating System With
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Stability and Bifurcation of Self-Synchronization of a
Published 2008. Engineering. Varieties of vibratory machines adopting the self-synchronization principle are used in industries, such as vibratory screeners, vibratory Abstract. A new single-pipe vibratory mill, the eccentric vibratory mill, is introduced. It is the result of a joint development project between the Institute for Eccentric vibratory mills — theory and practice ScienceDirect
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Self-Synchronization and Vibration Isolation Theories in
Dynamic Model. To grasp the dynamic characteristics between the dual-frequency rotors in the anti-resonance system, a simplified mechanical model is first shown in Fig. 1a. The vibrating system is actuated eccentric mass m i (i = 1, 2) bonded in a high-frequency motor and a low-frequency motors, respectively, and the two motors is fixedly In this paper, phase and speed synchronization control of four eccentric rotors (ERs) driven by induction motors in a linear vibratory feeder with unknown time-varying load torques is studied.Self-Synchronization and Vibration Isolation Theories in
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Xueliang Zhang's research works Northeastern University
Xueliang Zhang's 42 research works with 579 citations and 1,786 reads, including: Synchronization and Stability of a Nonlinear Vibrating Mechanical System Characterized by Asymmetrical PiecewiseIn previous studies about the synchronization of vibrators, the restoring forces of springs are mainly treated as linear directly, whereas the nonlinear features are rarely considered in vibrating systems. To make up this drawback, a dynamical model of a nonlinear vibrating mechanical system with double rigid frames (RFs), driven by two Synchronization and Stability of a Nonlinear Vibrating
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Investigation on multiple-frequency synchronization experiment
1. Introduction. Synchronization motion is of great engineering significance in motor manufacturing, vibration transportation, ore screening, multi-axis control system and so on [1], [2], [3], [4].Especially, synchronous vibrating screens with eccentric blocks actuation are universally applied to separate drilling cuttings from drilling fluid in In the paper, the composite synchronization of four eccentric rotors (ERs) driven by induction motors in a vibration system with a mass-spring rigid base is investigated.Composite synchronization of a four eccentric rotors
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Spatial synchronization behavior of vibration system with tri-motor
The existing research of vibration synchronization among multiple rotors is mainly concentrated on plane vibration system. In this paper, the synchronization mechanism of the spatial vibration system actuated with tri-motor rotating in identical direction is studied. Firstly, the dynamic model is established, and the motion differential Request PDF Composite synchronization of three eccentric rotors driven by induction motors in a vibrating system This paper addresses the problem of composite synchronization of threeComposite synchronization of three eccentric rotors
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Synchronization implementation of two eccentric rotors
In a vibrating screen machinery, two eccentric rotors (ERs) are actuated by swung and fixed motors. When the working efficiency of vibrating screens is the highest, the motion trajectory of the vibrating body is an ellipse. However, to implement elliptical trajectory, the ideal synchronization between the two ERs must be needed.The synchronization theory and dynamic model of the dual-mass vibrating system with two exciters described in this paper were successfully applied to enterprise engineering. Figure 9 shows the engineering application of the dynamic model shown in Figure 1. Two eccentric exciters are symmetrically mounted on the upper mass m 1, as shown inSynchronization of a Dual-Mass Vibrating System with Two Exciters
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Modeling vibration energy transfer of fresh concrete and
According to Fig. 2, the driving motor is built into the casing, and the motor rotor is directly connected with the eccentric mass.Different from the operational mode of the pendulum-type internal vibrator, the eccentric mass does not collide with the casing but transmits the eccentric force to the casing through the bearing, causing the casing to 2 vibrators = 4687.5 lbs each vibrator Refer to the 1200 RPM chart (page 8) and scan down the force output column and match the Fo calculated. We find the vibrators should be R/KBC-3-400-6. The maximum Fo of each vibrator is 5628 lbs. Therefore, the eccentric setting should be set at the following percentage: %= 4687.5 UP TO 25 TONS OF FORCE OUTPUT Renold
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(PDF) Self-Synchronization Theory of Circular Symmetrical Four Motors
Abstract. The synchronization characteristics of the circularly symmetrical four-vibrators vibration system are studied. Firstly, the dynamic model of this type of vibration system is establishedIn the paper, the composite synchronization of four eccentric rotors (ERs) driven by induction motors in a vibration system with a mass-spring rigid base is investigated. Composite synchronization is a combination of self-synchronization and controlled synchronization. Based on fully considering the model of the induction motor, Composite synchronization of a four eccentric rotors driven
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Comments on the stability of the synchronous states of three vibrators
This paper focuses on the stability of three homodromy vibrators in a vibrating system with two rigid frames (RFs). The motion differential equations of the system are established. Using the average method yields the average coupling torque balanced equations of three vibrators, and the simplified analytical expressions for synchronization This study investigates the frequency capture characteristic of four unbalanced rotors in multi-frequency ranges. First, using the average method, the synchronous condition of four unbalanced rotors in a vibration system is derived. Then, the stability condition of the vibration system is deduced, which meets the Routh-Hurwitz Frequency capture characteristic of a vibration system
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Research on the performance of hydraulic vibratory hammer
The eccentric mass is driven by hydraulic motor, and the frequency is related to the speed of motor, which can be obtained with the displacement and flow. The motor of this hammer is a fixed displacement piston motor with 125 cc/rev displacement. Therefore, the trend of flow is identical to SFT results of acceleration data.This paper researched the synchronous characteristic of three homodromy motors in a secondary isolation system. Firstly, the motion differential equations of the system were established via employing Lagrange’s equation. The Laplace transform was used to deduce approximate solutions of displacement. Next, the ability of vibrating Synchronous characteristic of three homodromy motors in
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On the Synchronization of Two Eccentric Rotors with
We study synchronization of two eccentric rotors (ERs) with common rotational axis in the vibration system of the far-resonant spatial motion. We deduce the dimensionless coupling equation of two ERs with applying the average method of small parameters. We convert the synchronization problem into the existence and stability of Among them, the internal vibrator with a built-in motor and an eccentric rod is frequently used due to its high energy transfer efficiency and good robustness. At present, construction workers using internal vibrators mainly depend on personal experience to qualitatively evaluate vibration quality [4] .Vibration quality evaluation of reinforced concrete using
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