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非線性耦合力作用下液壓馬達(dá)低速波動機(jī)理分析
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國家高技術(shù)研究發(fā)展計劃(863計劃)資助項目(2008AA042501);福建省自然科學(xué)基金資助項目(2009J01259);福建省教育廳資助項目(JB08182)


Mechanism of Low Speed Fluctuation for Hydraulic Motor Based on Nonlinear Coupled Force
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    摘要:

    通過動力學(xué)模型和試驗,，分析了液壓馬達(dá)低速波動的機(jī)理和產(chǎn)生條件，認(rèn)為非線性液壓彈簧力和非線性摩擦力的耦合作用是液壓馬達(dá)低速波動主要原因；通過試驗研究了非線性摩擦扭矩,、泄漏系數(shù),、粘性阻尼系數(shù),、油液壓縮系數(shù)等因素對液壓馬達(dá)低速波動的影響,，揭示出液壓馬達(dá)低速波動是在負(fù)特性摩擦阻力工況下的自激振動現(xiàn)象,，并提出了改善液壓馬達(dá)低速穩(wěn)定性的措施。

    Abstract:

    The mechanism and the producing condition of instability in low velocity of hydraulic motors were analyzed based on dynamic model and test. Nonlinear coupled force combined with hydraulic spring and self-excited vibration was thought to be the key factor that could affect instability in low angular velocity. The results indicated that the low speed creeping characteristics of hydraulic motor could be affected by friction torque, leakage and compressibility of oil and liquid. The test showed that the fluctuation was the negative characteristics of friction in the self-excited vibration conditions. Some measures were proposed to improve the low speed stability of hydraulic motors.

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林榮川,郭隱彪,魏莎莎,林輝.非線性耦合力作用下液壓馬達(dá)低速波動機(jī)理分析[J].農(nóng)業(yè)機(jī)械學(xué)報,2011,42(6):213-218. Lin Rongchuan, Guo Yinbiao, Wei Shasha, Lin Hui. Mechanism of Low Speed Fluctuation for Hydraulic Motor Based on Nonlinear Coupled Force[J]. Transactions of the Chinese Society for Agricultural Machinery,2011,42(6):213-218.

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