共查询到20条相似文献,搜索用时 62 毫秒
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在实验研究的基础上,提出了试重-求当前失衡量法、平衡-试重综合法。实验分析表明,这两种新方法对于风机转子的现场平衡具有明显的优点。 相似文献
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通过对主风机组开机过程振动信号的分析,判明机组的振动原因为不平衡,并查明产生不平衡的原因。通过现场动平衡解决了机组的振动问题。 相似文献
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转子自动平衡用释液式平衡头的研究 总被引:2,自引:0,他引:2
介绍了研制成功的释液式平衡头的工作机理、结构设计以及利用它进行的转子自动平衡试验的情况,还进行了有关激振的讨论。试验证明,释液式平衡头取得了很好的平衡效果且能连续工作。 相似文献
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滚珠自动控制转子不平衡响应的动力学机理 总被引:4,自引:0,他引:4
通过理论分析和数值计算,研究在Jeffcott转子的圆盘里加入单、双滚珠的转子系统的周期解及其稳定性。研究表明,转子在临界转速以下运行时,单、双滚珠均使转子的静不平衡振动加剧,平衡恶化;而在临界转速以上运行时,特定参数的单滚珠能使转子自动达到静平衡,而参数设计合理的双滚珠始终能使转子达到自动静平衡,能有效地消除不平衡振动。另外,由于滚珠运动的影响,在转速刚过临界转速附近,系统发生自激振动。 相似文献
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The potential of multimedia interactive simulators is discussed. As an example, the simulator for a system measuring vibration parameters is considered. By means of this simulator, the components and operating principle of the measuring system may be studied in dialog mode, as is demonstrated. The application of this system not only as a measuring instrument but also for the reduction of vibration in rotating mechanisms (rotor balancing) is demonstrated. 相似文献
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《Mechanical Systems and Signal Processing》2007,21(5):2137-2160
This paper primarily aims at the new generalized modal balancing for non-isotropic rotor systems. The method is based on the derived unbalance modal responses from the complete modal analysis for non-isotropic rotor systems. We found, from investigating the modal configuration to be balanced, that the isotropic and asymmetric rotor systems appear a single 1X harmonic, whereas the anisotropic and general rotor systems appear duel and multiple harmonics, respectively. Furthermore, for the asymmetric and general rotor systems, each harmonic is combined with the multiple modal parameters. The peculiar feature for balancing the non-isotropic rotor systems is that the additional right eigenvector and counter excitation in stator to cancel the anisotropy are required to suppress effectively the total residual response. In this process, the concept of the dominant balancing mode is drawn from the definition of the major harmonic. Also it is suggested that the balancing performance is dependent upon the degree of accuracy of the unbalance modal response that is approximated by the dominant mode at a critical speed.The numerical simulations of the simple general rotor model with one balancing plane are performed to demonstrate the theoretical findings and effectiveness of the proposed method for non-isotropic rotor systems. 相似文献
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This work deals with the discrete optimization problem of rotor two-plane balancing. The best balancing configuration is searched for two discrete parameters: allowed standard masses and predefined angular positions on the balancing planes. The objective is to minimize the residual unbalancing effects (such as reactions in supports) thanks to an optimal location of several accurately selected masses on each balancing plane. The corresponding optimization problem is solved using genetic algorithm. A simple model of a rigid rotor mounted on rigid supports is investigated in numerical examples. The optimization efficiency and the influence of the number of applied balancing masses are discussed. The experimental tests have validated the developed balancing approach. 相似文献
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介绍基于Pro/E、VERICUT软件平台,进行转子数控自动编程及仿真系统开发的过程、难点及解决办法. 相似文献
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转子系统因制造、装配等原因均会产生不平衡现象,需要进行动平衡操作.现有的动平衡方法多是基于影响系数法,其在动平衡计算中需要先添加试重以计算影响系数矩阵,而加装试重的大小与相位会直接对动平衡精度产生影响.通过试验对比研究发现,相比于试重大小其加装相位将对动平衡结果产生决定性的影响.因此,应保持试重相位与初始不平衡相位接近... 相似文献
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童克波 《工业仪表与自动化装置》2016,(2):95-97
根据纺织厂对纺织车间温度、湿度的要求,对车间鼓风机运行规律进行分析,将全年按季节分为高温期和中低温期;又将高温期和中低温期的每天按不同时段设计了变频器的运行频率,从而控制鼓风机的速度以达到控制车间温度、湿度的目的。该文设计了技术改造后的主电路和控制电路,设置了变频器的参数,并将技术改造前后的耗电量进行了对比。经过实际运行效果良好。 相似文献
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针对球面光学元件的特点,以及自动检测的需要,提出了环形扫描的检测方法。设计了扫描方案并搭建了实验平台,分析了扫描速度对图像拼接的影响,以及所选光源数目对成像质量的影响。通过实验证明:对口径为20mm,曲率半径为50mm的透镜选取40mm/s的扫描速度,以及三个LED光源照明,可以达到检测的要求。通过GUI参数界面的编写,可以很好地解决不同曲率半径及口径的检测问题。 相似文献