懸吊隔振型實驗平臺減振技術(shù)研究
發(fā)布時間：2019-03-02 11:09
【摘要】：高精度儀器儀表的研制對其測試和評估環(huán)境有很高要求,研究級聯(lián)減振技術(shù)尤其是超低頻隔振技術(shù)是實現(xiàn)高精度測試環(huán)境的重要手段之一。本課題以超低頻級聯(lián)減振技術(shù)和高效阻尼器為研究目標,研制了一套可用于標定高精度儀器儀表的測試平臺系統(tǒng)。主要內(nèi)容概括如下:1、針對超低頻隔振的需求,分析了普通空氣彈簧在超低頻隔振領域的不足,進而提出了采用帶附加氣室氣缸型氣體彈簧作為主懸吊結(jié)構(gòu)的方案,通過仿真得出了連接管路的直徑和長度對帶附加氣室氣體彈簧剛度的影響規(guī)律,并對氣體彈簧的結(jié)構(gòu)進行了設計和改進。2、針對水平隔振的需求,對羅伯茨水平減振機構(gòu)(原名稱為The Roberts Linkage,本文中如是翻譯,下同)進行了合理設計和應用。研究了羅伯茨水平減振機構(gòu)的隔振機理,通過仿真研究了懸掛點的高度、調(diào)諧質(zhì)量塊的質(zhì)量和位置等三個因素對水平隔振系統(tǒng)的影響。對羅伯茨水平減振機構(gòu)的各項參數(shù)進行了理論計算,并通過仿真和實驗對其有效性進行了驗證。3、調(diào)諧質(zhì)量阻尼器(TunedMassDamper,TMD)隔振系統(tǒng)的設計。從TMD系統(tǒng)的理論模型出發(fā),針對實際情況完成了 TMD系統(tǒng)的最優(yōu)參數(shù)設計并進行了仿真研究,結(jié)果很好的驗證了 TMD系統(tǒng)的隔振性能和最優(yōu)參數(shù)理論的準確性。在此基礎上,用電磁阻尼替代了傳統(tǒng)TMD系統(tǒng)內(nèi)部的阻尼產(chǎn)生形式,完成了永磁式TMD系統(tǒng)的參數(shù)和結(jié)構(gòu)設計,并通過實驗對其減振效果進行了驗證。最后,搭建了實際的測試平臺,通過傳感器采集了平臺的位移和速度信息,分別對各級隔振系統(tǒng)的性能進行了評估,完成了設計目標。
[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.
【學位授予單位】：浙江大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TH706;TB535
本文編號：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.
【學位授予單位】：浙江大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TH706;TB535
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