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基于负载口独立控制的双伺服阀控缸系统

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基于负载口独立控制的双伺服阀控缸系统
Separate Meter in and Meter out Valve Controlled Cylinder System Based on Dual Servo Control
投稿时间:2018-11-10
DOI:10.15918/j.tbit1001-0645.2018.456
中文关键词:负载口独立双伺服阀控缸自适应鲁棒扩张状态观测器节能
English Keywords:separate meter in and meter outvalve controlled cylinder systemadaptive robust methodextended state observer (ESO)energy saving
基金项目:国家自然科学基金资助项目(51675041)
作者单位
牛善帅北京理工大学 自动化学院, 北京 100081
王军政北京理工大学 自动化学院, 北京 100081
张鹏北京理工大学 自动化学院, 北京 100081
汪首坤北京理工大学 自动化学院, 北京 100081
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中文摘要:
针对电液伺服系统对控制精度和节能的需求,提出了一种基于负载口独立控制的双伺服阀控缸系统.首先对系统进行了建模分析,然后利用鲁棒自适应的方法对系统进行了完全解耦,针对主、被动负载均存在的位置伺服工况,设计了以位置跟踪为目标的进油口控制器和以压力控制为目标的回油口控制器.同时分析了系统的节能性,设计了基于扩张状态观测器(ESO)的油源压力控制器以及液压泵流量控制器.最后通过实验验证该系统的控制性能和节能效果.
English Summary:
Aiming at the need for control precision and energy saving of electro-hydraulic servo system, a kind of separate meter in and meter out valve controlled cylinder system was proposed based on dual servo control. First, a mathematical model of the system was established. Then, the system was completely decoupled by using the adaptive robust method. According to the position servo conditions with active or negative loads, the inlet controller for position tracking and the outlet controller for pressure control were designed. At the same time, the energy saving of the system was analyzed, a source pressure controller was designed based on the ESO and the hydraulic pump flow servo controller was designed. Finally, the experiments were carried out to verify the control performance and energy-saving effect of the system.
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