本文選題：微小型 + 2D閥��； 參考：《浙江工業(yè)大學(xué)》2016年碩士論文

【摘要】：電液伺服技術(shù)的性能與主機(jī)性能息息相關(guān),在軍事領(lǐng)域以及工業(yè)領(lǐng)域都起著決定性的作用,已逐漸成為衡量國家現(xiàn)代工業(yè)發(fā)展的標(biāo)準(zhǔn)。電液伺服控制系統(tǒng)以其諸多優(yōu)點如控制精度高、響應(yīng)速度塊、抗負(fù)載剛性大等,已在航空航、冶金、軍事和工程機(jī)械等領(lǐng)域中廣泛運(yùn)用。對于電液伺服系統(tǒng),電液伺服閥的性能對整個系統(tǒng)的控制精度、響應(yīng)特性、工作可靠性及壽命起著決定性的作用。2D數(shù)字伺服閥解決了傳統(tǒng)的噴嘴擋板閥的抗污染能力差以及射流管閥零位泄漏較大的缺點,并具有結(jié)構(gòu)簡單、流量大、功耗小、易于實現(xiàn)閉環(huán)控制且靜動態(tài)性能良好等優(yōu)點。由于工業(yè)領(lǐng)域和軍事領(lǐng)域?qū)λ欧y的要求完全不同,本文針對應(yīng)用于軍事領(lǐng)域的微小型2D數(shù)字伺服閥進(jìn)行研究,其主要研究內(nèi)容和成果如下:(1)提出微小型2D數(shù)字伺服閥的設(shè)計目標(biāo),對微小型2D數(shù)字伺服閥的各組成部分進(jìn)行了結(jié)構(gòu)分析以及結(jié)構(gòu)緊湊化設(shè)計,包括傳動機(jī)構(gòu)的設(shè)計選擇以及兩級零位保持機(jī)構(gòu)的設(shè)計等。結(jié)果表明,其最終重量達(dá)到0.24kg,對比改進(jìn)前的伺服閥,減重0.16kg,對比國內(nèi)外同流量類型的產(chǎn)品,做到了減重0.16~0.94kg。(2)為了研究伺服閥的性能,在零位泄露和輸入輸出特性兩個方面理論分析了其靜態(tài)特性,列出了流量連續(xù)性方程和主閥芯的力平衡方程,建立了數(shù)學(xué)模型,通過仿真理論分析了影響其性能的幾個關(guān)鍵因素,將仿真結(jié)果與結(jié)構(gòu)計算相結(jié)合,對閥體設(shè)計進(jìn)行了優(yōu)化。(3)對電-機(jī)械轉(zhuǎn)換器和微小型2D數(shù)字伺服閥進(jìn)行實驗研究。實驗表明,電-機(jī)械轉(zhuǎn)換器在-3dB時頻率達(dá)到180Hz,-90°時頻率達(dá)到200Hz,微小型2D數(shù)字伺服閥滯環(huán)大小為3.25%,階躍響應(yīng)時間為8ms,頻寬大小為120Hz。結(jié)果表明對比同流量產(chǎn)品,頻寬提高20Hz以上。研究結(jié)果表明,對比同流量等級國內(nèi)外生產(chǎn)的伺服閥,微小型2D數(shù)字伺服閥的重量更輕,體積更小,動靜態(tài)性能更加優(yōu)越。
[Abstract]:The performance of electro-hydraulic servo technology is closely related to the performance of mainframe and plays a decisive role in military and industrial fields. It has gradually become the standard to measure the development of modern industry in our country. Electro-hydraulic servo control system has been widely used in aviation, metallurgy, military and construction machinery fields for its many advantages, such as high control precision, response speed block, high load rigidity and so on. For the electro-hydraulic servo system, the performance of the electro-hydraulic servo valve has the control accuracy and response characteristics of the whole system. Working reliability and service life play a decisive role. 2D digital servo valve solves the disadvantages of poor anti-pollution ability of traditional nozzle baffle valve and large zero leakage of jet pipe valve, and has the advantages of simple structure, large flow rate and low power consumption. It is easy to realize closed loop control and has good static and dynamic performance. Because the requirements of servo valve in industry and military field are completely different, this paper studies the miniature 2D digital servo valve applied in military field. The main research contents and results are as follows: (1) the design goal of micro 2D digital servo valve is put forward, and the structural analysis and compact design of each component of miniature 2D digital servo valve are carried out. Including the design selection of transmission mechanism and the design of two-stage zero-position holding mechanism and so on. The results show that the final weight of the valve is 0.24 kg, compared with the servo valve before the improvement, the weight loss is 0.16 kg, compared with the domestic and foreign products of the same flow type, the weight loss of the servo valve is 0.160.94 kg. (2) in order to study the performance of the servo valve, The static characteristics of zero leakage and input / output characteristics are analyzed theoretically, the flow continuity equation and the force balance equation of the main valve core are listed, and the mathematical model is established. Several key factors affecting the performance of the valve are analyzed by simulation theory. The design of valve body is optimized by combining the simulation results with the structural calculation. (3) the electro-mechanical converter and the miniature 2D digital servo valve are experimentally studied. The experimental results show that the frequency of the electro-mechanical converter reaches 180Hz at -3dB, the hysteresis of the miniature 2D digital servo valve is 3.25, the step response time is 8ms, and the frequency width is 120Hz. The results show that compared with the same flow rate products, the bandwidth is increased by more than 20 Hz. The results show that, compared with the servo valves produced at home and abroad with the same flow level, the miniature 2D digital servo valves are lighter in weight, smaller in volume and superior in dynamic and static performance.
【學(xué)位授予單位】：浙江工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：TH137.52

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本文編號：2101451