摘要
以液压伺服振动控制系统为对象,研究了以质量、弹簧和阻尼环节构成的液压动力机构的动力学控制模型,分析了被控对象具有的非线性、时变和模型不确定性等特点,针对控制系统需要快速、准确跟踪设定值轨迹的要求,提出了一种基于预测函数控制算法的解决方案,并设计了液压振动伺服驱动系统的预测函数控制器,给出了具体的设计步骤和参数选择方法。论文针对实验室液压振动试验装置进行了伺服控制参数计算,建立了输入和输出的状态空间控制模型,并将开环增益作为摄动参数进行仿真分析,仿真和实验结果表明:提出的控制策略具有较强的鲁棒性和抗干扰能力,能够有效地提高液压振动伺服控制系统动态跟踪的准确性,具有较高的工程应用价值。
This paper investigates a dynamical model of hydraulic power mechanism composed of quality, springs and damping elements for a class of hydraulic servo vibration systems. On basis of the analysis of the structural characteristics of the model, such as the non linearity, time-varying and model uncertainty and to meet the control performance requirements of rapidity and accuracy in trajectory tracking of set values, an advanced control strategy based on predictive function control （PFC） scheme is presented. In addition, a controller based on predictive function for the considered system is designed and some specific procedures and parameter selecting methods are also proposed. Finally, the simulation analysis with the open loop gain as perturbative parameter is carried out. The results show that the proposed method has strong robustness and is capable of anti interfering, and as wellcan improve the tracking speed and accuracy of hydraulic servo vibration control system.
出处
《振动工程学报》
EI
CSCD
北大核心
2017年第3期389-396,共8页
Journal of Vibration Engineering
基金
安徽省教育厅自然科学基金重点资助项目(KJ2015A058
KJ2013A054)
关键词
振动控制
液压振动
预测函数控制
伺服系统
位置跟踪
vibration control
hydraulic vibration
predictive functional control
servo vibration system
position tracking
