摘要
设计了可实现双向变张力控制的电液比例张力控制系统,对两种典型的张力控制方案——调压方案与调速方案进行了数学建模与理论分析.指出调压方案具有自带闭环、稳定性较高的特点,同时在具有大惯性负载时,也存在动态性能较差的不足.针对这种情况,充分利用节流元件的压力流量增益来增大调压方案的系统阻尼比,并设计了带限幅的变比例分段(propertional-integral-derivative,PID)张力控制算法.理论分析与试验表明,所设计的采用调压方案的电液比例张力系统及其控制策略,对于大惯性负载的变张力控制具有很好的解决能力,张力跟踪良好,精度较高,同时又能实现双向张力控制这一功能.
An electro-hydraulic proportional tension control system that can realize bi-direction variable-tension control was designed,and the mathematical models of two typical schemes—adjusting pressure and adjusting velocity were built.The adjusting pressure scheme has an own closed loop and high stability,however when the system under high inertia loads,the dynamic performance deteriorates.To solve the problem,the pressure-flow gain of throttle control was utilized,and a variable proportion segmented PID（proportion integral differential） control strategy with limiting level was proposed.Theoretical analysis and experimental results show that the designed system adopting adjusting pressure scheme and the control method are effective to the variable-tension control with high inertia loads,the tension tracking performance is satisfactory and the precision is higher.At the same time,the system can also realize the function of bi-direction tension control.
出处
《浙江大学学报（工学版）》
EI
CAS
CSCD
北大核心
2007年第8期1394-1399,共6页
Journal of Zhejiang University：Engineering Science
基金
海外青年学者合作研究基金资助项目(50528505)
关键词
双向变张力控制
自带闭环
变比例分段控制
大惯性负载
bi-direction variable-tension control
own closed loop
proportional-integral-derivative（PID） control
high inertia load
