發(fā)布時間：2018-07-12 14:20

  本文選題：模擬裝置 + 加壓方案��； 參考：《合肥工業(yè)大學》2015年碩士論文

【摘要】：隨著海洋工程技術的快速發(fā)展,我國已從“淺藍”邁向了“深藍”。但由于深海環(huán)境具有復雜性和特殊性,難以身臨其境地進行分析和研究,因此需要設計一套能夠模擬深海環(huán)境的裝置�；诖吮疚奶岢鲆环N深海壓力模擬試驗裝置用于對深海壓力傳感器的壓力標定。 本文針對試驗裝置的設計指標和控制特性要求,提出通過強制改變腔體內的液體體積以改變容器內部壓力的加壓方案,繼而初步確定了模擬試驗裝置的總體構成以及精確控制進給量的控制方法；然后通過對主要組成部分(壓力缸、螺栓、管路、電機)進行設計與計算,完成了深海壓力模擬試驗裝置的整體設計；由于在給壓力缸加壓的過程中試驗裝置會產(chǎn)生相應地變形,而試驗裝置的變形會導致壓力缸內的壓力減小,此時利用ANSYS軟件對壓力缸、螺栓和管路進行靜力學分析,得出了不同壓力環(huán)境下試驗裝置的相關變形量；最后通過對試驗裝置變形量和液體壓縮量的計算及相關公式的推導,得出了活塞進給量與壓力缸內部的壓力變化量的關系曲線。 本課題研究的模擬裝置通過對驅動系統(tǒng)實行閉環(huán)控制可以精確地控制進給量,從而達到高精度的模擬效果。試驗裝置包括兩個進給系統(tǒng),其中大活塞進給系統(tǒng)可以加壓至目標壓力值,小活塞進給系統(tǒng)可以高精度的改變壓力缸內部的微小壓力,其精度可達0.02%FS,故本裝置可以實現(xiàn)微小壓力的標定作用,為后續(xù)深海壓力傳感器的研究提供了良好的實驗平臺。
[Abstract]:With the rapid development of marine engineering technology, China has moved from "shallow blue" to "deep blue". However, because of the complexity and particularity of the deep-sea environment, it is difficult to analyze and study it. Therefore, it is necessary to design a set of devices to simulate the deep sea environment. Based on this paper, a kind of deep sea pressure simulation test device is put forward. Pressure calibration for deep sea pressure sensors.
In this paper, aiming at the design index and control characteristic requirements of the test device, the pressure scheme for changing the internal pressure of the container is proposed by forcing the volume of the liquid in the cavity to change the internal pressure of the container. Then, the overall composition of the simulation test device and the control method for the precise control of the feed are preliminarily determined. Then, the main components (pressure cylinder, screw) are introduced. The design and calculation are carried out to complete the overall design of the deep sea pressure simulation test device. Due to the deformation of the test device in the pressure cylinder of the pressure cylinder, the deformation of the test device will cause the pressure in the pressure cylinder to be reduced. At this time, the static force of the pressure cylinder, the bolt and the pipe will be static with the ANSYS software. According to the analysis, the relative deformation amount of the test device under different pressure conditions is obtained. Finally, the relation curve of the pressure variation in the piston feed and the pressure cylinder is obtained through the calculation of the deformation of the test device and the calculation of the liquid compression and the derivation of the related formulas.
Through closed loop control of the driving system, the simulation device can accurately control the feed and achieve high precision simulation effect. The experiment device includes two feed systems, in which the feed system of the large piston can be pressurized to the target pressure value, and the small piston feed system can change the internal micro of the pressure cylinder with high precision. The precision of small pressure is up to 0.02%FS, so this device can realize the calibration of small pressure. It provides a good experimental platform for the further study of deep sea pressure sensors.
【學位授予單位】：合肥工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：P755.2

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本文編號：2117437