主被动复合式隔振器设计及性能实验研究

发布时间：2018-05-14 06:00

本文选题：惯性式电磁激振器 + 复合式隔振器　；参考：《哈尔滨工程大学》2014年硕士论文

【摘要】：伴随着科技的不断进步,机械设备越来越向大型化、高速化的方向发展,同时人们对振动的要求也越来越高,传统的隔振设备已不能完全满足减振性能的要求。针对目前的隔振器存在的优缺点,结合相关的振动理论知识和自动控制原理,本文研制了一款基于四轴惯性式电磁激振器的双层主被动复合式隔振器。为了实现振动主动控制的功能,本文专门研制了一款四轴惯性式电磁激振器。此处以电磁激振器的动力学理论基础为切入点对其进行了动力学分析,并分析了影响电磁激振器输出力的相关材料及参数。首先,为了得到最优的结构参数,本文利用电磁场有限元分析软件ANSOFT对激振器的磁路进行了仿真分析;然后,对电磁激振器的散热不良问题进行了设计,提出了冷却的方案及计算结果;在此基础上设计并制造出激振器的样机,最后对激振器的样机进行了性能测试。本文根据振动的理论知识研制出双层隔振器的被动隔振部分,通过限元分析软件ANSYS对其结构进行了应力和模态响应仿真。最后将研制出的主动隔振部分与被动隔振部分组装在一起,构成整台主被动复合式隔振器的样机。在此基础之上,通过实验分别测试了激振器的输入电压与动子的加速度响应之间的传递函数hi、激振器的输入电压与中间隔振板的加速度响应之间的传递函数gij、激振器的动子加速度与中间隔振板的加速度响应之间的传递函数HIJ,通过对实验数据的拟合处理进一步了解了该装置的性能;此外通过仿真的方法对整台隔振器的隔振性能进行J了研究,并与前面的实验结果相对比,提出了改进的建议,为下一步工作奠定了基础。
[Abstract]:With the continuous progress of science and technology, mechanical equipment is becoming more and more large-scale, high-speed direction, at the same time, people have higher and higher requirements for vibration, the traditional vibration isolation equipment can not fully meet the requirements of vibration absorption performance. In view of the advantages and disadvantages of the current vibration isolators, combined with the related vibration theory knowledge and the principle of automatic control, a double-layer active and passive composite vibration isolator based on the four-axis inertial electromagnetic exciter is developed in this paper. In order to realize the function of active vibration control, a four-axis inertial electromagnetic exciter is developed in this paper. In this paper, the dynamic analysis of the electromagnetic exciter is carried out based on its dynamic theory, and the related materials and parameters affecting the output force of the electromagnetic exciter are analyzed. Firstly, in order to obtain the optimal structural parameters, the electromagnetic field finite element analysis software ANSOFT is used to simulate and analyze the magnetic circuit of the exciter, and then the problem of poor heat dissipation of the electromagnetic exciter is designed. The cooling scheme and calculation results are put forward, and the prototype of the exciter is designed and manufactured on this basis, and the performance of the prototype of the exciter is tested at last. Based on the theoretical knowledge of vibration, the passive vibration isolation part of double-layer vibration isolator is developed in this paper. The stress and modal response of the structure are simulated by the finite element analysis software ANSYS. Finally, the active vibration isolation part and the passive vibration isolation part are assembled together to form the prototype of the active and passive composite vibration isolator. On this basis, The transfer function between the input voltage of the exciter and the acceleration response of the vibrator, the transfer function between the input voltage of the exciter and the acceleration response of the intermediate vibration isolator, and the acceleration of the exciter are tested by experiments. The transfer function HIJ between the degree and the acceleration response of the intermediate vibration isolator is obtained. The performance of the device is further understood by fitting the experimental data. In addition, the vibration isolation performance of the whole vibration isolator is studied by means of simulation, and compared with the previous experimental results, some suggestions for improvement are put forward, which lays a foundation for further work.
【学位授予单位】：哈尔滨工程大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TB535.1

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