基于DSHplus的机床速度换接回路建模与仿真  

Modeling and Simulation of Machine Speed Switch Circuit Based on DSHplus

作　　者：高军浩[1] 杨国平[1] 陈博[1] 

机构地区：[1]上海工程技术大学汽车工程学院,上海201620

出　　处：《机床与液压》2011年第21期125-127,141,共4页Machine Tool & Hydraulics

基　　金：国家自然科学基金项目(50975169);上海高校知识创新工程(085工程)建设项目(JZ0901);上海工程技术大学研究生创新项目(A-0503 10-18)

摘　　要：为了分析基于行程节流阀的机床速度换接回路的动态特性并探求改善系统性能的途径,建立了调速回路的数学模型,并在DSHplus环境下建立了回路仿真模型。仿真结果表明:用行程节流阀控制的速度换接回路能够实现执行元件的快速准确速度切换;通过在泵出口增设单向阀和蓄能器的办法,进一步减小了活塞速度的波动和泵出口的压力脉动,从而提高了整个系统的效率和寿命;改变节流阀开口大小能进一步调节执行元件速度。To analyze the dynamic characteristics of machine speed switch circuit with trip throttle and to search the method of improving system performance, the mathematical model of the speed regulating circuit was established. The simulation model of the circuit was also established in the software DSHplus. The simulation results show that the speed switch circuit with trip throttle achieves speed switching of actuator rapidly and accurately. By means of setting check valve and accumulator at pump outlet, speed fluctuation of piston and pressure pulsation of pump outlet are reduced, which enhances the efficiency and lifetime of the whole system. The velocity of actuator can be adjusted further by varying opening of the throttle.

关 键 词：行程节流阀 速度换接 DSHplus软件 蓄能器 仿真 

分 类 号：TH137.5[机械工程—机械制造及自动化]