直线的

This invention relates to a DC linear motor digital controller including a central processor circuit, a data memory, a program memory, an A/D conversion circuit, a D/A conversion circuit, a linear shift orthogonal code pulse signal circuit, a signal isolation circuit, among which, the center processor circuit is composed of a special DSP chip controlled by the motor, a complicated programmable logic device CPLD combining with a peripheral expanding circuit, said digital controller fully utilizes the motor to control the special DSP chip to integral DSP kernel CZXLP and the rich external circuit in a single chip to make up of a digital controller for controlling high frequency response DC linear motor with small volume, low dissipation and high reliability.

高频响直流直线电机数字控制器，属于电机自动控制技术领域，目的在于获得快速、高精度往返运动的控制效果，实现高频响直流直线电机的精密位置跟踪控制功能。本发明包括中央处理器电路，数据存储器，程序存储器，A/D转换电路，D/A转换电路，直线位移正交编码脉冲信号电路，信号隔离电路；中央处理器电路由一个电机控制专用DSP芯片，复杂可编程逻辑器件CPLD，结合外围扩展电路组成。该数字控制器充分利用电机控制专用DSP芯片将高性能DSP核C2xLP和丰富的功能外设电路集成在单个芯片上这一特点，构成了一个体积小、功耗低、可靠性高和功能比较齐全的高频响直流直线电机控制用的数字控制器，使系统的整体成本大大降低。

CNC machine only to the general linear and circular interpolation, and other curves (such as becoming more open lines) with mathematical method linear and circular approximation, linear and circular interpolation can be special machine outside the curve.

一般数控机床仅对圆弧和直线插补，其它曲线用数学方法，采用直线和圆弧逼近，特殊机床可插补直线和圆弧外的曲线。

The length of straight line and the angle serial character was analyzed, and then the cell shape was described.

该方法利用改进的直线HOUGH变换对细胞图像边缘进行直线检测、选择直线端点。

One straight line guide and silk pole flat network of transmission gush out black to make network device, by shower nozzle, shower nozzle shelf, air cylinder, person who lead sharply, base, job mesa and electrical machinery, pole of silk and pole of silk make up, its characterisitic is that: Both ends, with locating an air cylinder of bottom base of shower nozzle to be linked to through a connecting rod of the stated shower nozzle shelf, make up and lift the organization pneumatically; And this shower nozzle sets of base underpart set up first group along the longitudinal straight line guide package that arranged of the base again, two straight line guide package shower nozzle sets of base department of position set up and link with this shower nozzle of a bases, and can promote its ball silk pole moved along longitudinal time of the base; The end head of this ball silk pole is connecting the electrical machinery of urging.

一种直线导轨和丝杆传动的平网喷墨制网装置，由喷头、喷头架、气缸、直线导机、基座、工作台面及丝杆和丝杆电机组成，其特征在于：所述喷头架的两端通过一连杆与设于喷头架底座下部的气缸相连，组成气动抬升机构；而该喷头架底座下部又设置着一组沿基座纵向排布的直线导轨组件，两直线导轨组件中间部位的喷头架底座部设置与该喷头架底座相连，并能推动其沿基座纵向来回移动的滚珠丝杆；该滚珠丝杆的端头连接着驱动电机。

As the most important factor in the proposed calibration methods, vanishing point are addressed through the whole paper.

该方法既不需要将直线投影到球面坐标，也不需要对大量直线作统计特性分析，当存在大量多余直线观测时，这种平差方法可快速、准确地计算出灭点的最优位置。

The evaluation method and algorithm of shape error (roundness, plane straightness, space straightness, cylindricity) were discussed. A new kind of algorithm, namely mesh searching method, which can be used to evaluate the roundness error, plane straightness error, space straightness error and cylindricity error, were put forward. With this algorithm, the shape error can be obtained by transferring the distance formula repeatedly and simple judgment without linearzing the distance formula (from point to point or point to line) and choosing optimal direction and step length.

对形状误差(圆度、平面直线度、空间直线度、圆柱度)的评定方法及算法进行了讨论，提出了一种评价圆度误差、平面直线度误差、空间直线度误差及圆柱度误差的新算法——网格搜索法，该算法不需要对距离公式线性化，也不需要选定优化方向和优化步长，只需重复调用距离公式和简单的判断即可得到符合定义的形状误差。

This article expatiated the basic frame and ecumenic principle and introduced a micro-computer control system of the hybrid linear step motor, it based the characteristics and need of the control of the linear step motor, we chose the special motor control chip DSP TMS320F2407 to realize a open loop control and SPWM control .

本文阐述了混合式直线步进电动机基本结构和一般原理，介绍了一种混合式直线步进电动机微机控制系统，该系统根据混合式直线步进电机的特点和控制要求，采用电机专用控制DSP芯片TMS320LF2407进行开环和SPWM控制。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

Two important directions in the development of proton linacs are high current proton linacs (mainly applied in nuclear power field) and compact proton linacs.

当前质子直线加速器发展的两个重要方向是强流质子直线加速器和小型质子直线加速器。前者主要用于核能领域，后者主要用于质子治疗。

Concurrently camp product :The automation mechanical device must each kind of translation series product, for example: The straight line guide rail, the guide screw strut, the shaft coupling, lock the nut, the straight line bearing, the knuckle bearing, the oil-retaining bearing and so on.

兼营产品：自动化机械设备所必须的各类直线运动系列产品，如：直线导轨、丝杠支撑、联轴器、锁紧螺母、直线轴承、关节轴承、含油轴承等。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。