基于力传感器的刚性转子动平衡实验方法

Dynamic balancing experimental method of rigid rotor based on force sensors

针对刚性转子动平衡问题,提出了一种基于拉压力传感器的综合实验平衡方法。首先,基于动平衡原理,构建了转子不平衡等效模型,求解了理论不平衡量,确保了实验的严谨性和合理性;然后,进行了结构设计、仪器与设备选择,搭建了转子动平衡实验平台以保障测试数据的稳定性和可重复性;最后,利用该平台,采集了力学性能数据,分析了轴系不平衡量的幅值和相位,采用了添加平衡质量的方式进行了转子动平衡实验,对基于拉压力传感器的综合实验平衡方法的可行性和有效性进行了验证。研究结果表明:平衡前左右两端不平衡质量幅值分别为2.2 kg、-3.8 kg,平衡后左右两端不平衡质量幅值分别为1.2 kg、-1.4 kg,转子系统不平衡量减小1.4 kg,平衡率为87.5%,这说明拉压力传感器和编码器相互配合以消除不平衡量的方法具有可行性。该实验平台使用拉压力传感器和编码器精确测量不平衡质量和相位,为解决旋转机械动平衡问题提供了新思路,有助于提高旋转机械的运行效率,并延长其使用寿命。

In order to solve the dynamic balancing problem of rigid rotor,a comprehensive experimental balancing method based on tension and pressure sensor was proposed.Firstly,based on the principle of dynamic balance,the experimental equivalent model of rotor unbalance was constructed,and the theoretical unbalance was solved to ensure the rigor and rationality of the experiment.Then,the structural design,instrument and equipment were selected,the rotor dynamic balance experiment platform was built to ensure the stability and repeatability of test data.Finally,the platform was used to collect mechanical performance data,the amplitude and phase of shafting unbalance were analyzed,and the rotor dynamic balancing experiment was carried out by adding balance mass,and the feasibility and effectiveness of the comprehensive experimental balance method based on tension and pressure sensor were verified.The experimental results show that the unbalance mass amplitudes of the left and right ends are respectively 2.2 kg and-3.8 kg,and the unbalance mass amplitudes of the left and right ends are respectively 1.2 kg and-1.4 kg;the unbalance of the rotor system is reduced by 1.4 kg,and the balance rate is 87.5%,which verifies the feasibility of the balancing method based on the cooperation of tension pressure sensor and encoder to eliminate unbalance.This experimental platform lies in the use of tension pressure sensor and encoder to accurately measure unbalance mass and phase,provides a new idea for solving the dynamic balance problem of rotating machinery,and is helpful to improve the operation efficiency and prolong the service life of rotating machinery.