弧长

镁合金薄板TIG焊自适应弧长控制

Adaptive arc length control for magnesium alloy sheets TIG welding

GMAW-P频率特性复合弧长适应控制法

Frequency-character combine control method of arc length adjustment of GMAW-P

将该曲线表示为B样条曲线的形式便得到一条近似弧长参数化曲线。

Then we can get a curve with approximate arc-length parameterization by expressing the curve in B-spline form .

厚壁管全位置焊接可变增益PID弧长调节器的设计

Design of Changeable Gain Arc length PID Controller for All-position Welding of Thick-wall Pipe

Bézier曲线的近似弧长参数化方法

An Approximate Arc-Length Parameterization Method for B é zier Curves

同样地，这个距离，△r的模也不完全等于它跨过的弧长。

Similarly , this distance , the length of delta r is not exactly the length along the curve .

在AutoCAD中弧长的标注

To Label the Length of Arc in AutoCAD

TIG焊弧光传感弧长控制的研究

A Study of Arc Length Control with Arc Light Sensor in TIG Welding

控制算法使用了PID控制，根据材料的硬度和接触弧长对磨削过程的影响，在线调整了PID控制的参数。

PID control algorithm is used and its parameter is adjusted according the change of hardness and contact area of the cutting material .

高压环境下全位置脉冲TIG焊弧长跟踪系统研究

Study on the arc tracking system of all-position pulsed TIG welding under high-pressure environment

拱坝最大坝高82公尺，坝顶弧长255.5公尺，位于一V形山谷中。

The arch dam under discussion has a max. height of 82 m and spans 255 . m , situated in a V-shaped valley .

交流脉冲MIG弧焊电源及弧长控制

AC PMIG arc welding power source and arc length control

本文以电弧电压为控制量，送丝速度为被控制量，采用MATLAB软件实现了双输入、单输出弧长模糊控制器的设计，并通过仿真对模糊控制中的比例因子和量化因子进行了优化。

The fuzzy arc length controller is established with arc voltage as the input and wire speed as the output , based on the MATLAB software .

实验研究表明，应用该软件设计的控制方法与传统PID控制相比，可快速、准确地控制焊接弧长的稳定。

Study shows that this control method designed by MATLAB was faster and preciser on controlling arc length stabilization compared with the conventional PID control method .

利用Newton－Fox打靶法和伪弧长连续算法计算了非线性转子&SFD支承系统的周期解。

Periodic solutions of nonlinear rotor-SFD supporting system are calculated by using Newton-Fox shooting method and pseudo-arc length continuation procedure .

基于CHAMP短弧长动力学轨道的地球重力场模型

A gravity field model based on CHAMP short-arc dynamical orbits

通过对TIG焊孤光光强与弧长之间关系的研究，提出了单片机控制的钨极检测、调节系统方案，并对该方案进行了实验验证。

Propose a method to detect and control tungsten based on single chip microprocessor and test the method by experiment .

在厚壁管窄间隙全位置TIG焊中，弧长是影响焊接质量最敏感的焊接参数之一。

The arc length is one of the most sensitive parameters that influence welding quality at all position TIG welding .

修正Newton-Raphson方法和弧长法在结构推覆分析中的联合应用

Application of Both Modified Newton-Raphson Iteration and Arc-Length Method to Pushover Analysis of Building Structures

由于PH曲线是导数模长为多项式的向量形多项式参数曲线，因此呈现出了良好的实际应用价值，例如它的弧长可以表示为参数的多项式函数曲线。

Because of the mode of PH curves ' derivate is a polynomial , PH curves have good value to apply in practice . For example , their arc length is a parameter polynomial .

又设定子午线弧长反解公式的形式，利用Hermite插值原理得出各参数。

For comparison , based on the principle of Hermite interpolation , we can obtain each parameter of the formula .

GTA电弧弧长自动稳定单片机控制系统

Single-chip computer control system for automatic stabilizing of arc length during GTAW process

最后开发了一套基于DSP为核心的数字控制系统，完成了熔化极气体保护焊弧长控制系统的硬件电路设计和软件设计。

So the arc can quickly be adjusted with the outside interference . A digital control system based on DSP was developed and the hardware and software configurations of the GMAW control system were completed .

结果1.三角肌起点弧长（22.5±3.9）cm，中线长（15.2±2.3）cm；

Results 1 . The length of arc line of deltoid origin was ( 22.5 ± 3.9 ) cm ; the length of middle line was ( 15 . 2 ± 2.3 ) cm .

MIG电弧还会出现弧长变短的问题，这个问题可以通过适当增加焊接电压来改善。

The MIG welding arc also present an appearance that arc length turns short which can be solved by increasing the welding voltage .

并通过MATLAB仿真研究表明，该控制系统能真正实时地监测焊接过程中参数的变化，能满足对焊接中电弧弧长的精确控制，同时对系统参数变化和外部的随机扰动具有较强的鲁棒性。

The simulation results in the platform Matlab showed the effectiveness of the proposed controller . The algorithm is satisfied with exact control of welding arc length and the strong robustness for the system variations and disturbances .

运用数据分析软件SPSS分析各因素间的关系，得到上口线弧长与各个变量的相关性与回归方程。

The analysis of the relationship between the various factors in the use of data analysis software SPSS , to obtain the catchy line arc length of each variable formula .

采用Newton-Raphson迭代法和修正弧长迭代法求解桅杆在失稳前、后的整个变形路径。

The Newton-Raphson and modified are-length iterative methods are adopted to solve the whole deflecting procedures of guyed tower before and after instability .

试验证明，应用该系统在短路过渡区间实现了CO2焊较为理想的波形控制，弧长控制稳定，焊丝伸出长度变化的适应性增强，焊接过程控制智能化。

The experimental results validate this system can attain ideal waveform control for CO2 short-circuit welding , increase welding arc stability , improve welding process adaptability for the wire extension chance and control welding process intelligently .

该方案采用交流变频调速驱动系统、双逆变交流矩形波焊接电源、矩形波交流电弧的弧长自动调节系统、可编程控制器（PLC）为主控器的焊接程序控制系统等。

The speed change driving system of alternating current frequency conversion , alternating current rectangular wave welding current , the automatic arc length regulating system of rectangular wave alternating current arc and programmable language controller were adopted in the device .