### Compensation control of rotor mass eccentric vibration

Abstract. Aiming at the rotor mass eccentric vibration caused by the mechanical unbalance of a bearingless induction motor (BL-IM), an unbalance mass radius product (UMRP) strategy is proposed to compensate for rotor displacement. By 1. Introduction Unbalanced magnetic pull (UMP) caused by eccentricity is the most common fault of the rotor system. In general, the majority of ScienceDirect Research on electromagnetic and vibration

احصل على السعر### Eccentric Rotors in a Vibration System

results show that this vibration system has two super-resonant motion states and one sub-resonant motion state. The experiment proves the correctness of The combination of the two criteria determines the stable phase of the electrically driven eccentric rotor in the vibrating environment. The idea of synchronization between the Theory of Frequency Captured of Eccentric Rotor by Vibration

احصل على السعر### Electromagnetic vibration characteristics of an eccentric rotor with

Abstract An eccentric rotor does not only occur with dynamic loads, but also has vibrations with static loads. A unified formula is given for the air-gap length for an eccentric rotor This paper demonstrates the new technique to eliminate vibration comes from unbalanced rotor by application multiply ABBs mounted outside the rotor axis. A Off-axis vibration-elimination system of eccentric rotors with use

احصل على السعر### Inﬂuence of Rotor Eccentricity on Vibration Characteristics of

vibration and noise caused by mutual interactions between the radial electromagnetic force by coil connections and the rotor eccentricity, and reported an increase in the component An integral mean method with small parameters and periodic coefficient (IMM-SPPC) is proposed, which converts the relative motion of the electrically driven Theory of Frequency Captured of Eccentric Rotor by Vibration

احصل على السعر### ScienceDirect Research on electromagnetic and vibration

Unbalanced magnetic pull (UMP) caused by eccentricity is the most common fault of the rotor system. In general, the majority of electromagnetic energy 27 KiBRaw Permalink Blame History. sbm pcb vibration feeder control yv183 2TM Syntron® PowerPulse (115 230V) WT Control The PowerPulse 115 230V WT control regulates the vibration amplitude of feeders and vibrators through phase control provided by a Silicon Controlled Rectifier (SCR) The printed circuit board (PCB) includes an OFF sbm/sbm pcb vibration feeder control yv183 2.md at master

احصل على السعر### (PDF) Active Control Method for Rotor Eccentric Vibration of

The experimental results show that the method is effective for the active control of high-speed motor rotor eccentric vibration, the control effect is consistent with the ideal effect, and theThe added mass of the ABH-DVA is 0.0529 kg (4.52% of the primary plate). To warrant a truthful description of the vibration details near the tip of the ABH-DVA and computational accuracy, the mesh size is set to ensure more than ten elements per wavelength. The model is discretized using C3D20R solid elements.A vibration absorber based on two-dimensional acoustic black

احصل على السعر### Research on electromagnetic and vibration characteristics of

Focusing on existence of coupling relationship between electromagnetic field and mechanical frame, the signal demodulation method based on principal component analysis was applied for extracting modulation features in experimental frame. It was found that the amplitude modulation of magnetic flux density and vibration acceleration signal enhanced.Firstly, the signal demodulation method based on principal component analysis is used to extract the modulation features of the experimentally measured vibration signals.Research on electromagnetic and vibration characteristics of

احصل على السعر### (PDF) A Circular Eccentric Vibration Absorber With

A previously proposed planar axisymmetric dynamic vibration absorber (DVA), with embedded acoustic black hole (ABH) features, has been shown to suffer from the very selective coupling with theUS3099349A US74061A US7406160A US3099349A US 3099349 A US3099349 A US 3099349A US 74061 A US74061 A US 74061A US 7406160 A US7406160 A US 7406160A US 3099349 A US3099349 A US 3099349A Authority US United States Prior art keywords shaft eccentric sleeve eccentric portion vibration Prior art date Legal Eccentric drive for vibrating conveyor Google Patents

احصل على السعر### shibang/sbm vibrating feeder princip.md at master shibang

You've already forked shibang 0 Code Issues Pull Requests Packages Projects Releases Wiki ActivityThis vibration level is sensitive to a series of motor parameters, including the frame structure, flatness of base, and the uniformity of air-gap, especially on the eccentricity of the rotor. The main obstacle in calculating the UMP is obtaining the distribution of magnetic field along the boundary of the air-gap with eccentric fault.ScienceDirect Research on electromagnetic and vibration

احصل على السعر### Compensation control of rotor mass eccentric vibration for

Aiming at the rotor mass eccentric vibration caused by the mechanical unbalance of a bearingless induction motor (BL-IM), an unbalance mass radius product (UMRP) strategy is proposed to compensate for rotor displacement. By analyzing the principle and influence of the unbalanced vibration of BL-IM’s, a rotating coordinate A dynamic model of a vibration system, in which eccentric rotors are driven by one motor with two flexible couplings, is developed in this study. The Lagrange equation is used to analyze the dynamic behavior of the vibration system. Synchronization theory and its motion law are investigated using Hamilton’s principle, and the validity of Synchronization of Two Eccentric Rotors Driven by One Motor

احصل على السعر### The dynamics of eccentric vibration mechanism (Part 1) Extrica

This paper presents a mathematical model of a new multi-striker eccentric shock-vibration mechanism (ESVM) with a crank-sliding bar vibration exciter (CSVE) and an arbitrary number of pistons. Analytical solutions for the parameters of the model are obtained to determine the regions of existence of stable periodic motions. Unbalanced fault is the most common fault of high-speed motorized spindle, which is the main factor affecting the machining accuracy of high-speed spindle. Due to the unbalanced magnetic pull produced by Study on the Unbalanced Fault Dynamic

احصل على السعر### Combined control strategy for synchronization control in multi

Multi-motor-pendulum vibration systems have been applied to design shale shakers in which is a principal factor to decrease screening efficiency Chen X, et al. (2016) Synchronization analysis and control of three eccentric rotors in a vibrating system using adaptive sliding mode control algorithm. Mechanical SystemNevertheless, few scholars had paid attention to the eccentric rotating cylindrical shell structures. Based on Hamilton principle and Flügge's thin shell theory, Wu et al. [43] analyzed the free vibration of the eccentric rotating thin cylindrical shells with the simply-supported boundary condition.Buckling and free vibration of eccentric rotating CFRP cylindrical

احصل على السعر### Directional Vibration an overview ScienceDirect Topics

In the first vibration cycle, the tool reaches point D 1 at half-vibration period, T/2, though the cutting ends at the leftmost point E 1 by the period longer than T/2. The tool is then free from the workpiece from time t E 1 to t B 2, where t B 2 is the cutting-start time for the second vibration cycle at the cross-over point B 12.Similarly, the cutting-end time for the Under various eccentric fault conditions, all the coordinate offset of stator and rotor center are available in Table 2. With the evaluation of the modulation effect, three principal frequency bands of vibration acceleration signals were selected for modulation features extraction by DPCA method.ScienceDirect Research on electromagnetic and vibration

احصل على السعر### Torsional Vibration of Eccentric Building Systems IntechOpen

2.1.4. Classification of torsionl behaviour. To obtain the knowledge on the torsional response of buildings, a key elastic parameter is the ratio of the two uncoupled frequencies, ε y 1+ ( ε x / ε y ) 2 given by. Ω E19. where Ω= ω θ ω x and ω x,are an uncoupled translational and torsional frequencies, respectively.The vibration motor is an excitation source in which the power source and the vibration source are combined into a single body. The vibration motor installs a set of adjustable eccentric blocks at each end of the rotor shaft, and uses the centrifugal force generated by the high-speed rotation of the shaft and the eccentric block to obtain the excitation force.Vibration Motor Working Principle Vibration Motors

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