本文關鍵詞：基于GMM轉換器的兩級電液伺服閥的機理研究　出處：《安徽理工大學》2011年碩士論文　論文類型：學位論文

  更多相關文章： 超磁致伸縮材料(GMM) 轉換器 兩級電液伺服閥 動態(tài)特性分析

【摘要】：超磁致伸縮材料(Giant Magnetostrictive Material, GMM)是一種新型的功能材料,具有磁致伸縮應變大、響應速度快、輸出力大等優(yōu)異的性能,使之成為高科技領域的研究熱點,其相應的理論及應用研究正日益廣泛,各種相關的應用器件正被世界各地的研究者開發(fā)出來。 論文充分利用超磁致伸縮材料的優(yōu)異性能,設計了一種閥用電-機轉換器(Giant Magnetostrictive Actuator, GMA),并對其進行了靜動態(tài)理論分析,建立其數(shù)學模型進行動態(tài)仿真分析,仿真結果顯示GMA階躍上升時間Tr為0.8ms,穩(wěn)態(tài)輸出力F為1832N,表明GMA具有響應速度快、輸出力大等顯著的特點。 基于GMA的眾多優(yōu)點,論文以提高傳統(tǒng)電液伺服閥的頻寬、響應速度等動態(tài)特性為指導思想,利用GMA取代傳統(tǒng)電液伺服閥中的力矩馬達,設計了一種新型的力反饋式電液伺服閥的實現(xiàn)方案和具體結構,并給出了具體的結構參數(shù)設計理論；同時還建立了GMM電液伺服閥的數(shù)學模型與動態(tài)仿真模型,通過一組原始數(shù)據(jù)對閥進行了參數(shù)設計及仿真研究,并將GMM電液伺服閥與傳統(tǒng)電液伺服閥的仿真結果相比較。結果顯示,對GMM電液伺服閥,其相位裕度γ=85.6°,幅值裕量Kg=23.5dB,幅頻寬ωb=472.6Hz,同等條件下,傳統(tǒng)電液伺服閥的相位裕度γ=83.2°,幅值裕量Kg=9.26dB,幅頻寬ωb=134.3Hz�？梢�,利用超磁致伸縮材料研制的電液伺服閥響應更快、精度更高、穩(wěn)定性更好。 圖[40]表[6]參[73]
[Abstract]:Giant Magnetostrictive material (GMMs) is a new functional material with large magnetostrictive strain. Because of its high response speed and high output force, it has become a research hotspot in the field of high technology, and its corresponding theoretical and application research is becoming more and more extensive. Various related applications are being developed by researchers around the world. Taking full advantage of the excellent performance of giant magnetostrictive material, a valve electric-mechanical converter, Giant Magnetostrictive Actuator, is designed in this paper. The static and dynamic theoretical analysis is carried out, and its mathematical model is established for dynamic simulation. The simulation results show that the step rise time of GMA is 0.8ms. The steady-state output force F is 1832N, which indicates that GMA has the characteristics of fast response speed and large output force. Based on the many advantages of GMA, the paper uses GMA to replace the torque motor in the traditional electro-hydraulic servo valve by improving the dynamic characteristics of the traditional electro-hydraulic servo valve, such as improving the frequency width and response speed of the traditional electro-hydraulic servo valve. A new type of force feedback electro-hydraulic servo valve is designed. At the same time, the mathematical model and dynamic simulation model of GMM electro-hydraulic servo valve are established, and the parameter design and simulation research are carried out through a group of original data. The simulation results of GMM electro-hydraulic servo valve and traditional electro-hydraulic servo valve are compared. The results show that for GMM electro-hydraulic servo valve, the phase margin is 85.6 擄and the amplitude margin is Kg=23.5dB. Under the same conditions, the phase margin of conventional electro-hydraulic servo valve is 83.2 擄and the amplitude margin is Kg=9.26dB. It can be seen that the electro-hydraulic servo valve developed with giant magnetostrictive material has faster response, higher accuracy and better stability. Diagram [40 tables. [6] refs. [73]
【學位授予單位】：安徽理工大學
【學位級別】：碩士
【學位授予年份】：2011
【分類號】：TH137.522

【相似文獻】

相關期刊論文 前10條

1 宋曉軍;劉幫成;;電液伺服閥測試臺液壓系統(tǒng)設計[J];機床與液壓;2011年12期

2 ，

本文編號：1431579