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新型动平衡机误差分析和性能改进
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摘要
现今,旋转机械在工业生产中被广泛使用,由于旋转部件质量相对旋转轴分布不对称产生的周期性离心力是引起振动和噪声,降低设备寿命和可靠性的主要原因之一。高精度动平衡测量是提高产品性能和延长寿命的具有巨大效益和深远意义的技术。如何提高动平衡机的平衡精度,改善动平衡机的平衡效率是当前动平衡技术的一个重要课题。
     在介绍新型动平衡系统振动系统及测控系统的基础上,对测控软件进行了设计。分析了新型动平衡机在抑制环境震动以及提高平面分离能力等方面的特点。讨论了硬支承动平衡机原理误差、工作转速波动及压电陶瓷测力传感器非线性等三个主要误差源及其对动不平衡测量的影响。
     为提高动平衡机校正质量相位点的定位精度及效率,设计了一套基于模糊控制的主轴高速精确定位系统。针对新型动平衡机主轴不平衡量对标定参数的影响大的情况,设计了一种补偿主轴不平衡量的改进型标定法。最后通过实验,验证了所采取的误差补偿及性能改进措施的有效性。
Rotating machinery is currently widely used in industrial production. One of the main reasons to bring vibration, noise, reduction of equipment life and reliability is the periodical centrifugal force caused by a symmetric distribution of the rotating components quality to the rotation axis. High-precision balancing measurement is a technology of a great and far-reaching significance that can improve the performance and extend the life of products. How to improve the balance precision of the dynamic balancing machines and the balancing efficiency of it as well is an important task of current balancing technology.
     This thesis introduced vibration system, the measurement & control system as well as software design process of a new type of balancing system. The existing balance machine lacked the ability of inhibiting environment vibration, low efficiency of balance speed, low separation ratio .Analyzed three main error sources of new type of new type of balancing system and their affects to the measurement results of balancing system. Based on the requirements of balancing system performance evaluation .
     Against the low-efficiency of the new dynamic balancing system, we had designed high-speed spindle precise positioning system based on fuzzy control of to improve the balance efficiency of balancing system. Aiming at the imbalance of the Spindle for a new balancing system which has a great effect on the calibration parameters, we designed an improved calibration method of compensation spindle imbalance. Finally, by several experiment, we had certified the test error control and performance improvement results of the new balancing system.
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