基于缝隙理论的新型数字液压缸研究  

Research on the Digital Cylinder Based on the Theory of Annular Micro-Gap

作　　者：孟文宝[1] 张洛平[1] 韩宇[1] 张培[1] 

机构地区：[1]河南科技大学机电工程学院,河南洛阳471003

出　　处：《机械设计与制造》2013年第7期60-62,66,共4页Machinery Design & Manufacture

基　　金：河南省重点科技攻关项目(112102210421)

摘　　要：介绍了一种新型数字液压缸,该数字液压缸采用一种基于缝隙理论的数字阀,通过对数字阀的小流量控制来实现数字缸的微量进给和速度控制。步进电机接收到数字脉冲信号,驱动数字阀芯移动,通过改变数字阀阀芯的缝隙值来控制液压缸输入流量,从而有效提高了数字液压缸微进给控制精度。对数字液压缸系统进行分析,建立了精确的数学模型,推导了控制系统的传递函数和方框图,并利用AMESim仿真软件对其液压系统进行仿真分析,得到了数字液压缸位移、流量与数字阀缝隙变化的相对关系。It introduced a new kind of digital cylinder who uses a digital valve based on the theory of the slit.By meaning of digital valve of flow control,it realized the digital cylinder trace of feed and speed control,and the stepper motor receives digital pulse signal to drive mobile digital valve.By changing the digital gap length of the valve core to control the flow,it effectively improved the precision of digital hydraulic cylinder micro feed control.The system of the digital cylinder were analyzed,and it established a precise mathematical model,deduced the control system transfer function and block diagram.By using software AMESim,the hydraulic system was simulated,and obtained the relative relationship of the digital hydraulic cylinder displacement and flow and the change of the digital valve gap.

关 键 词：数字液压缸 缝隙理论 数学模型 AMESIM 

分 类 号：TH16[机械工程—机械制造及自动化] TH137.51