数控英语翻译一、 Translate the following contents into Chinese (100分)Real-time P-H curve CNC interpolators for high speed corneringJavad Jahanpour & Behnam Moetakef ImaniReceived: 10 May 2007 / Accepted: 21 August 2007 / Published online: 2

数控英语翻译一、 Translate the following contents into Chinese (100分)Real-time P-H curve CNC interpolators for high speed corneringJavad Jahanpour & Behnam Moetakef ImaniReceived: 10 May 2007 / Accepted: 21 August 2007 / Published online: 2
数控英语翻译
一、 Translate the following contents into Chinese (100分)
Real-time P-H curve CNC interpolators for high speed cornering
Javad Jahanpour & Behnam Moetakef Imani
Received: 10 May 2007 / Accepted: 21 August 2007 / Published online: 28 September 2007
Abstract: In this paper, real-time Pythagorean hodograph (P-H) curve CNC interpolators are used for high speed corner machining. There are large contouring errors around sharp corners when low-bandwidth servo controllers (such as P-PI control) are used. In order to decrease the amount of the cornering errors, an improved interpolation method is proposed. The first deceleration phase of motion and the over-corner P-H curve constructed for regions with sharp corners are devised by quadratic and constant velocity interpolation algorithms, respectively. The geometric parameters of the over-corner P-H curve and the feed rate along the modified tool path are computed by pattern search algorithm in order to reduce the maximum cornering error. The proposed interpolation algorithm is implemented for symmetrical and unsymmetrical corners. The results of
simulation, such as the cornering error and the total cornering time, are compared with previously published methods. It has been observed that the developed over corner P-H approach can substantially reduce the amount of cornering error.
Keywords: Numerical control . P-H curves . Real-time CNC interpolators . Physical constraints .
Cornering error . Pattern search algorithm
1 Introduction
Maintaining tool path accuracy and total machining time are among the most important objectives of high speed finishing operations performed on complex parts such as dies and molds. During machining, tool paths with large geometric variations, such as sharp corners, must endure either sudden changes of direction on axis movements or a sudden stop of motion, both of which can result in large cornering errors. The amount of this error depends on the servo axis parameters and the feed rate along the tool path [1]. One method of reducing the tracking error of a sharp corner is to substitute a sharp corner with a smooth curve. Jouaneh et al. [2–4] introduced a circular arc and the double clothoid curves in the vicinity of corners to obtain a smooth tracking motion in robotic applications. Later, Kanayama and Miyake [5] substituted sharp corners with double clothoid curves in order to smoothen the motion transition when tracking corners for a mobile robot. Erkorkmaz et al. [6] replaced the line segments of the corner area with two and three-segment quintic splines. They implemented their algorithm for 30°, 60°, and 90° symmetrical corners with a constraint of 30 μm for the cornering error. They introduced over-corner and under-corner methods for the P-PI servo controller and the sliding mode controller, respectively. They proposed seven phases of motion along the modified tool path for the over-corner method as follows:

数控英语翻译一、 Translate the following contents into Chinese (100分)Real-time P-H curve CNC interpolators for high speed corneringJavad Jahanpour & Behnam Moetakef ImaniReceived: 10 May 2007 / Accepted: 21 August 2007 / Published online: 2
差点累死我啦.这是我翻译的.
一,把下面的内容为中文（ 100分）
实时PH值曲线数控interpolators高速转弯
贾瓦Jahanpour ＆赫南Moetakef伊曼尼
收稿：2007年5月10 /接受：07年8月21日/网上公布：2007年9月28
摘要：本文实时毕达哥拉斯速端（ PH ）的曲线数控interpolators用于高速弯角加工.有很大的错误,周围轮廓鲜明的弯道时,低带宽伺服控制器（如个P - PI控制）的使用.为了减少数额的转弯错误,改进插值方法.第一阶段的减速运动和过度角落PH值曲线构建区域急剧角落设计的二次和恒定速度插补算法分别.几何参数的过度角落PH值曲线和进给速度沿修改刀具轨迹的计算模式搜索算法,以减少最大转弯错误.拟议的插值算法是对称的,并实施了非对称的弯道.结果
模拟,如转弯错误和总过弯时,比较以前的发布方法.有人认为,发达国家的角落PH值的方法可大大减少转弯错误.
关键词：数值控制.P氢曲线.实时数控interpolators .实际限制.
转弯错误.模式搜索算法
1简介
保持刀具轨迹的准确性和总加工时间是最重要的目标高速精加工工序上进行复杂的零件,如模具和铸模.在机械加工,刀具路径与大型几何变化,如急剧弯道,必须忍受或者突然改变方向轴的运动或突然停止运动,这两者可能会导致大转弯错误.数额的错误取决于伺服轴的参数和进给速度沿刀具路径[ 1 ] .一种方法是减少跟踪误差的急转弯是替代急转弯平滑曲线.Jouaneh等.[ 2-4 ]介绍了圆弧和双clothoid曲线附近的角落获得顺利跟踪运动的机器人应用.后来,金山和宅[ 5 ]取代大幅角落双clothoid曲线,以便顺利过渡的动议时,跟踪弯道的移动机器人.Erkorkmaz等.[ 6 ]取代线段的角落里有两个领域和三个部分五次样条.他们实施的算法30 ° ,60 °和90 °对称的约束弯道30微米的转弯错误.他们介绍过弯道和下角方法的P -皮伺服控制器和滑模控制器分别.他们提出的议案7个阶段的修改工具沿路径的过度角落方法如下：