电液伺服系统摩擦分析与补偿

2011 International Conference on Consumer Electronics, Communications and Networks (CECNet) Pub Date : 2011-04-16 DOI:10.1109/CECNET.2011.5768974

J. Cheng, Xiaoguang Wang

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引用次数: 2

摘要

电液伺服系统中的摩擦使跟踪指向精度降低，是影响电液伺服系统跟踪指向精度的重要因素之一。在分析阀控非对称液压缸位置控制系统和LuGre摩擦模型的基础上，提出了一种非线性自适应摩擦补偿方法。针对电液伺服系统中无法测量的摩擦状态，构建了双非线性观测器来估计摩擦状态，并建立了摩擦参数自适应律来补偿动态摩擦。最后通过Simulink的应用验证了该方法的有效性。

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Analysis and compensation for friction in electro-hydraulic servo system

Friction in the electro-hydraulic servo system makes tracking and pointing accuracy lower, it is one of the most important influence factors. This paper proposes a nonlinear adaptive friction compensation method based on analysis of the position-control system of valve-control asymmetrical hydraulic cylinder and the LuGre friction model. Dual nonlinear observers were constructed to estimate the friction state, which is unmeasurable in the electro-hydraulic servo system, and adaptive laws of friction parameters were built to compensate dynamic friction. Finally the application of Simulink has proven this method is validity.

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2011 International Conference on Consumer Electronics, Communications and Networks (CECNet)

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