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Modeling and Simulation of Pendulum-type Automatic Balancer

Wang Li-Jie;TAN Qing

2012, 32 (2): 34-36. DOI: 103969/j.issn.1006-1355-2012.02.008

Abstract （1216）

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A mathematical model of a pendulum-type automatic balancer were established using Lagrange equation．Using the test bench, the parameters in the model of the balancer were determined. The model was simulated by means of the Runge-Kutta method. The influence of the pendulum mass on the vibration-reduction performance of the balancer was analyzed.

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Dynamic Characteristics of an Automatic Ball Balancer under the Second Harmonic Exciting Forces

TAN Qing;XIE Yan-qin;;LIU Wen-qian

2011, 31 (4): 77-79. DOI: 10.3969/j.issn.1006-1355-2011.04.018

Abstract （1783）

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High-speed rotating machinery is one kind of widely used mechanical equipments. Fault elimination is an important issue for the machinery. Rotor’s automatic balancing is one of the ways for solving the problem. During the operation of the machinery，in addition to eccentric excitation force, there will be high frequency and score frequency exciting forces, especially the second harmonic exciting force, acting on the rotor. Study on the influence of these exciting forces on the automatic ball balancer is of important significance. In this paper, the balance equation of the automatic ball balancer under the second harmonic exciting forces is constructed, its dynamic characteristic is analyzed using the MATLAB software and validated by the experiment.

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《Benefit Analysis of VibrationReduction of Automatic Balancer》

LIU Wenqian;;TAN Qing;XIE Yanqin;NIE Weidong

2010, 30 (4): 153-157. DOI: 10.3969/j.issn.1006-1355.2010.04.039

Abstract （2082）

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The background of automatic balancer study is introduced. The working principles, the characteristics of balancing, and the benefit of vibration reduction of three types of automatic balancers, the rollingball type balancer, the hammer type balancer and the liquid type balancer, are studied. It is suggested that the multiple of the vibration reduction be adopted as a quantitative index for the benefit evaluation. Comparative analysis shows that the rollingball type balancer has the best benefit of vibration reduction among the three types of balancers. In an ideal situation，the rotor can be brought to a complete balance state and the multiple of vibration reduction can reach infinity. While for hammer type balancer, the multiple of vibration reduction is much larger than unity in the ideal situation. Comparatively, the vibration reduction benefit is poor for liquid type balancer. Its multiple of vibration reduction is between 1 and 2.