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比例减压阀鲁棒输出反馈控制
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Robust Output Feedback Control for Piloted Electrohydraulic Proportional Pressurereducing Valve
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    摘要:

    针对先导式电液比例减压阀参数不确定、状态不完全可测以及受负载流量影响的特点,设计了一种含负载流量的观测器及其反馈控制器,实现对比例减压阀输出压力的鲁棒输出反馈控制。基于线性矩阵不等式,从理论上分析得出该方法能够保证系统稳定和具有H∞鲁棒性能,并给出了观测器增益L和控制器增益K的求取方法。通过对某个比例减压阀仿真,验证了该控制方法的有效性,可以消除负载流量变化对输出压力的影响,并保证输出压力快速跟随设定压力。

    Abstract:

    Aiming at piloted electrohydraulic proportional pressurereducing valve characteristics of uncertain parameters,immeasurable states and affected by load flow, an observer including load flow and it's feedback controller was designed, to achieve robust output feedback control to the output pressure. Based on linear matrix inequalities, theoretical analysis showed that the system was stable and had H∞robust performance. The method to obtain the observer gain L and controller gain K was given. By simulating a certain proportional pressure reducing valve, the validity of the algorithm was verified. The influence of load flow to output pressure was eliminated the output pressure following the set pressure quickly was ensured.

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邓攀,曾良才.比例减压阀鲁棒输出反馈控制[J].机床与液压,2016,44(4):97-100.
. Robust Output Feedback Control for Piloted Electrohydraulic Proportional Pressurereducing Valve[J]. Machine Tool & Hydraulics,2016,44(4):97-100

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  • 在线发布日期: 2016-04-08
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