摘要
快锻液压机由于动梁速度高,主控阀组必须进行频繁、快速的动作切换,容易引起剧烈的液压冲击和机械振动,影响压机的运行精度。基于此,本文将智能建模以及先进控制技术相结合,研究一种基于SVM模型的快速锻压机智能液压控制系统。首先,利用SVM超程预测模型估计出超程量,并通过该超程量对动梁实际位置偏差进行补偿,然后,专家控制器以此为依据判断动梁与给定位置的接近程度,从而切换选择不同的控制器,保证了大惯量运动部件进行平稳、无冲击振动和准确的位置控制;运行结果表明了该方法的有效性。
In the operation process of fast forging hydraulic press,its moving beam action with high speed and its master valve must be frequent,fast switching action,which can cause severe hydraulic shock and vibration and affect the operation accuracy.Based on this characteristic,SVM model based on intelligent control method for fast forging hydraulic press is researched by using the intelligent modeling and advanced control technology.First,super-way surplus is estimated by SVM prediction model,based on the surplus the actual position bias is compensated,secondly,according to the proximity between the actual position and set-point position,different controller is selected,which can make moving parts with large inertia smooth,non-impact vibration and accurate position control.The run result shows the effectiveness of the method.
出处
《计算机测量与控制》
CSCD
北大核心
2012年第1期88-90,112,共4页
Computer Measurement &Control
基金
2010年度湖南省教育厅科学研究项目(10C0232)
