【摘要】：為了研究氣浮式低摩擦氣缸在換向過程氣浮軸承的工作狀態(tài),根據固定容腔的充放氣理論并結合氣浮軸承的泄漏模型對氣缸的換向過程進行了建模.通過理論分析,提出以換向時間和壓力損耗作為換向過程的特征量,并通過仿真研究了氣缸的換向特性.結果表明,在單向閥的作用下活塞內腔在換向時具有保壓作用,換向時間越短活塞內腔壓力損耗越小.為進一步研究影響換向特性的其他因素,建立了可調容腔的換向測試試驗臺.實驗結果證實了仿真所得出的結論,同時也表明這種帶有單向閥的氣浮軸承的設計能夠實現平穩(wěn)換向,不同容腔下的實驗數據還能為確定氣缸在應用場合中的最佳換向時機提供指導.
[Abstract]:In order to study the working state of the air bearing with low friction in the commutative process, the reversing process of the cylinder was modeled according to the filling and discharging theory of the fixed cavity and the leakage model of the air bearing. Based on the theoretical analysis, the commutation time and pressure loss are proposed as the characteristic variables of the commutation process, and the reversing characteristics of the cylinder are studied by simulation. The results show that under the action of unidirectional valve, the inner cavity of the piston has the function of keeping pressure at the time of reversing, and the pressure loss of the cavity of the piston is smaller with the shorter the time of reversing. In order to further study the other factors affecting the commutation characteristics, a test bench for reversing test of adjustable capacitors was established. The experimental results confirm the conclusion of the simulation, and also show that the design of this kind of air bearing with one way valve can realize smooth commutation. The experimental data under different cavities can also provide guidance for determining the optimal timing of cylinder commutation in application.
【作者單位】： 浙江大學流體動力與機電系統(tǒng)國家重點實驗室;
【基金】：國家自然科學基金資助項目(51375430,51375432)
【分類號】：TH138.51
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本文編號：2339716