摘要
为解决普通比例阀不能直接用于高精度控制系统这一问题,探讨了精确控制系统中小流量比例阀阀芯位移的运动能量和在干扰作用下惯性体的运动能量产生机理,并对阀芯线位移控制进行了定量分析。然后基于DSP和所建立的数学模型,设计了一种数字状态观测器状态反馈的控制系统。实验表明,该控制系统能明显的抑制干扰影响,具有较高的位移控制精度,比例阀芯线位移控制精度可达到5μm。
To solve the problems that general proportional valve can＇ t meet the requirements of high precision control, the paper describes the generation mechanism of kinetic energy in the accurate spool displacement control system of the small flow rate proportional valve. The mechanism of kinetic energy and displacement control of spool under disturbance are discussed quantitatively. Based on the digital signal processor and the mathematical model established, the digital state observer feedback control system is designed. The experiment shows that the system can restrain disturbance effectively, and the control accuracy of spool displacement is high, which is up to the level of 5μm.
出处
《电机与控制学报》
EI
CSCD
北大核心
2007年第4期408-411,共4页
Electric Machines and Control
关键词
比例阀
阀芯位移
扰动
数字观测器
proportional valve
spool displacement
disturbance
digital observer
