First,adopt line speed control(inner closed loop) and tension control(outer closed loop),the line speed feedback around time-variant parameters r and J,weaken the influence to the whole system when it changes.
在详细推导出系统数学模型和放卷辊L6的时变参数半径r=f(t)、惯量J=f(r)的基础上,分析指出其采用原工程设计法所招致的失误,并提出改进方法:采用线速度(内环)、张力(外环)双环控制,线速度反馈将时变参数r,J包围,预先削弱其变化对整个系统的影响;线速度环采用Ⅱ型超前校正,积分校正将J,r引起的稳态误差∞变为0,超前校正除保证系统稳定外,主要是减小动态调节时间和超调量;进一步测出L6的转速Ω,让线速度调节器的放大系数Kvt跟随r变化而变化,始终保持线速度环的开环放大倍数KV不变,从而将时变系统改造为定常系统,这样就可以用任何线性定常系统设计方法对系统进行设计。
First, adopt line speed control (inner closed loop) and tension control (outer closed loop) , the line speed feedback around time-variant parameters r and J, weaken the influence to the whole system when it changes.
在详细推导出系统数学模型和放卷辊L6的时变参数半径r=f(t)、惯量J=f(r)的基础上, 分析指出其采用原工程设计法所招致的失误,并提出改进方法:采用线速度(内环)、张力(外环)双环控制,线速度反馈将时变参数r,J包围,预先削弱其变化对整个系统的影响;线速度环采用Ⅱ型超前校正,积分校正将J,r引起的稳态误差∞变为0,超前校正除保证系统稳定外,主要是减小动态调节时间和超调量;进一步测出L6的转速Ω,让线速度调节器的放大系数Kvt跟随r变化而变化,始终保持线速度环的开环放大倍数KV不变,从而将时变系统改造为定常系统,这样就可以用任何线性定常系统设计方法对系统进行设计。
A new method of measuring the stitch length of weft knitted fabric;
一种新的静态测试线圈长度的方法
To enhance the reliability and automation of stitch length measurement,a stitch length measuring system through processing the scanned image based on MatLab was introduced.
为提高针织物线圈长度测量的可靠性和自动化程度,基于MatLab程序,利用图像处理技术对扫描的针织物结构图像进行处理,通过傅里叶变换提取出反映线圈长度的特征点,经过细化等处理后,测量出线圈在平面上的投影长度(二维线圈长度),经线性回归分析得出相应的实际线圈长度(三维线圈长度)。
This paper describes the testing methods for stitch length of weft knitting presently,including static measurement,dynamic measurement and association of static and dynamic measurement,and analyze the points of these methods.
简述了当前纬编线圈长度常用的静态测试、动态测试及动静态结合测试的几种方法,分析了这些方法的特点。
Based on the knitting process of the jersey and 1+1 rib on an flat computerized knitting machine, the influences of the different parameters (yarn input tension, cam setting, machine running velocity and take down force) on the knittability of the glass fibre yarn, specially on the loop length and glass fibre damage, were analyzed.
通过在电脑横机上编织平针和1+1罗纹组织,分析讨论了不同编织工艺参数(给纱张力,弯纱深度,机速和牵拉力)对玻璃纤维纱线可编织性能的影响,特别是探讨了这些工艺参数对玻璃纤维线圈长度及纤维损伤程度的影响趋势。
The relations between the fibre damage degree and the loop lengths are also analysed.
主要探讨针织工艺对玻璃纤維损伤程度的影响,提出了玻璃纤维损伤程度的定量评价方法,并分析讨论了在不同玻璃纤维纱线和不同组织结构的情况下,纤维损伤率(或纱线损伤率)随线圈长度的变化趋势。
Two testing methods for loop length of weft knitting which are usually used now are introduced firstly:static test method and dynamic method,the deficiency of which is pointed out;A new testing method is introduced in detail.
简单介绍了目前纬编线圈长度的两种测试方法 :脱散法和利用线速圈长仪的动态测试法 ,指出了它们的不足之处 ,并介绍一种新的纬编线圈长度测试方法。
The relationship between the loop length and the weight per square meter of acrylic knitted modified rib fabric
腈纶变化罗纹织物线圈长度与克质量的关系
Lines of equal latitude are called parallels.
相等纬度的连线叫纬圈。
A loop, as of metal, rope, or thread.
金属圈，绳圈，线圈
General purpose fan coil housing. Stretch an end to increase duct length. Box size can be changed.
通用的扇形线圈罩。可拉伸一端以增加管道长度。框大小可以更改。
an electric cord used to extend the length of a power cord.
延长电源线长度的电线。
The number of turns of wire in the secondary coil is the same as the number of turns in the primary.
次级线圈的圈数和初线线圈圈数一样。
however, under higher electrical currents, inverse connecting of adjacent coils is apt to reduce increment speed of magnetic resistance and hence improve damping force of MRF damper.
但在高电流情况下,反接相邻线圈可以降低磁路磁阻的增长速度,从而有利于提高其阻尼力。
Study on the Design of Gradient Coils for Fully Open Permanent MRI System;
全开放永磁MRI系统梯度线圈设计研究
Hamilton Cycles and List Linear Arboricity of Graphs;
图中的哈密顿圈和图的列表线性荫度
The Design Method of Gradient Coils in Permanent MRI
永磁型MRI梯度线圈设计方法研究
A design method of disc gradient coils for permanent MRI systems
永磁磁共振系统盘式梯度线圈的设计
Will this rope stretch round the box?
这条绳子长度够绕盒子一圈吗？
tapped coil
多(接)头线圈, 抽头线圈
The Relation Between Calculated Value of Coil Longitudinal Magnetization and Length-Diameter Ratio of Component
线圈纵向磁化计算值与零件长径比的关系
Degaussing coil tape used for wrapping degaussing coils. Tape is composed of excellent soft PVC film. It is specially designed for good resistance for wrapping degaussing coils.
消磁线圈胶带用于消磁线圈的包缠。柔软度极佳，专为电子消磁线束所设计的。
The degree of self-induction is proportional to the cross-sectional area of the circuit.
而自感的程度与线圈横切面的面积成比例。
measures temperature by changes in the resistance of a spiral of platinum wire.
用在白金的螺旋线圈中的电阻的变化测量温度。
A Preliminary Design of the Silicon Flexural Accelerometer Based on Plane Helix;
平面线圈式石英挠性加速度计的前期研究