悬吊隔振型实验平台减振技术研究
发布时间：2019-03-02 11:09
【摘要】：高精度仪器仪表的研制对其测试和评估环境有很高要求,研究级联减振技术尤其是超低频隔振技术是实现高精度测试环境的重要手段之一。本课题以超低频级联减振技术和高效阻尼器为研究目标,研制了一套可用于标定高精度仪器仪表的测试平台系统。主要内容概括如下:1、针对超低频隔振的需求,分析了普通空气弹簧在超低频隔振领域的不足,进而提出了采用带附加气室气缸型气体弹簧作为主悬吊结构的方案,通过仿真得出了连接管路的直径和长度对带附加气室气体弹簧刚度的影响规律,并对气体弹簧的结构进行了设计和改进。2、针对水平隔振的需求,对罗伯茨水平减振机构(原名称为The Roberts Linkage,本文中如是翻译,下同)进行了合理设计和应用。研究了罗伯茨水平减振机构的隔振机理,通过仿真研究了悬挂点的高度、调谐质量块的质量和位置等三个因素对水平隔振系统的影响。对罗伯茨水平减振机构的各项参数进行了理论计算,并通过仿真和实验对其有效性进行了验证。3、调谐质量阻尼器(TunedMassDamper,TMD)隔振系统的设计。从TMD系统的理论模型出发,针对实际情况完成了 TMD系统的最优参数设计并进行了仿真研究,结果很好的验证了 TMD系统的隔振性能和最优参数理论的准确性。在此基础上,用电磁阻尼替代了传统TMD系统内部的阻尼产生形式,完成了永磁式TMD系统的参数和结构设计,并通过实验对其减振效果进行了验证。最后,搭建了实际的测试平台,通过传感器采集了平台的位移和速度信息,分别对各级隔振系统的性能进行了评估,完成了设计目标。
[Abstract]:The research on concatenated vibration reduction technology especially ultra-low frequency vibration isolation technology is one of the important means to realize the high-precision test environment because the development of high-precision instrument has a high requirement for its testing and evaluating environment. Aiming at the ultra-low frequency cascade vibration reduction technology and the high-efficiency damper, a test platform system for calibrating high-precision instruments and instruments is developed in this paper. The main contents are summarized as follows: 1. Aiming at the demand of ultra-low frequency vibration isolation, the deficiency of ordinary air spring in the field of ultra-low frequency vibration isolation is analyzed, and then the scheme of adopting cylinder-type gas spring with additional air chamber as the main suspension structure is put forward. The influence of the diameter and length of the connecting pipe on the stiffness of the gas spring with additional gas chamber is obtained by simulation, and the structure of the gas spring is designed and improved. 2, aiming at the requirement of horizontal vibration isolation, The rational design and application of Roberts horizontal damping mechanism (formerly called The Roberts Linkage,) are carried out. The vibration isolation mechanism of Roberts horizontal vibration absorber is studied. The effects of the height of suspension point, the quality and position of tuned mass block on the horizontal vibration isolation system are studied by simulation. The parameters of Roberts horizontal damping mechanism are calculated theoretically, and its validity is verified by simulation and experiment. 3. The design of tuned mass damper (TunedMassDamper,TMD) vibration isolation system is presented. Based on the theoretical model of TMD system, the optimal parameters of TMD system are designed and simulated according to the actual situation. The results show that the vibration isolation performance of TMD system and the accuracy of optimal parameter theory are well verified. On this basis, the electromagnetic damping is used to replace the internal damping of the traditional TMD system. The parameters and structure design of the permanent magnetic TMD system are completed, and the damping effect of the system is verified by experiments. Finally, the actual test platform is built, the displacement and velocity information of the platform are collected by the sensor, and the performance of the vibration isolation system is evaluated respectively, and the design goal is completed.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TH706;TB535
本文编号：2432992
[Abstract]:The research on concatenated vibration reduction technology especially ultra-low frequency vibration isolation technology is one of the important means to realize the high-precision test environment because the development of high-precision instrument has a high requirement for its testing and evaluating environment. Aiming at the ultra-low frequency cascade vibration reduction technology and the high-efficiency damper, a test platform system for calibrating high-precision instruments and instruments is developed in this paper. The main contents are summarized as follows: 1. Aiming at the demand of ultra-low frequency vibration isolation, the deficiency of ordinary air spring in the field of ultra-low frequency vibration isolation is analyzed, and then the scheme of adopting cylinder-type gas spring with additional air chamber as the main suspension structure is put forward. The influence of the diameter and length of the connecting pipe on the stiffness of the gas spring with additional gas chamber is obtained by simulation, and the structure of the gas spring is designed and improved. 2, aiming at the requirement of horizontal vibration isolation, The rational design and application of Roberts horizontal damping mechanism (formerly called The Roberts Linkage,) are carried out. The vibration isolation mechanism of Roberts horizontal vibration absorber is studied. The effects of the height of suspension point, the quality and position of tuned mass block on the horizontal vibration isolation system are studied by simulation. The parameters of Roberts horizontal damping mechanism are calculated theoretically, and its validity is verified by simulation and experiment. 3. The design of tuned mass damper (TunedMassDamper,TMD) vibration isolation system is presented. Based on the theoretical model of TMD system, the optimal parameters of TMD system are designed and simulated according to the actual situation. The results show that the vibration isolation performance of TMD system and the accuracy of optimal parameter theory are well verified. On this basis, the electromagnetic damping is used to replace the internal damping of the traditional TMD system. The parameters and structure design of the permanent magnetic TMD system are completed, and the damping effect of the system is verified by experiments. Finally, the actual test platform is built, the displacement and velocity information of the platform are collected by the sensor, and the performance of the vibration isolation system is evaluated respectively, and the design goal is completed.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TH706;TB535
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