步进的

But, in the natural and artificial signal, a lot of signal phases don\'tvary linearly with time, for example, we usually use chirp signal in the radar technology,frequency step signal, linear modulation component of the ground echo in the SARtechnology, linear modulation component of the moving target echo, linear modulationcomponent while the airborn radar detecting the moving target, etc.

在自然界和人工信号中，许多信号的相位变化并不是随时间一次方变化，如雷达技术中常用的线性调频信号，频率步进信号，另外，SAR 技术中，地面回波所含有的线性调频分量，ISAR技术中，运动目标的回波所含有的线性调频分量，机载雷达探测运动目标时的线性调频分量，等等；傅里叶变换对此类信号分析所得的结果是信号在不同频率点上的能量分布，即信号在基函数上的投影。

In the project of mechanical structure,we bat around the error and metrical way of Crank Shaft,describe the elements of the Synthetically Measure Instrument Of Crank Shaft and the way to realize it. In the project of hardware"s control,we analyze the displacement sensor,the data acquisition card,stepping-motor and it"s controller.

在硬件的控制部分，我们主要对所用的位移传感器和数据采集卡、以及步进电机及其驱动器进行了分析，并提出了硬件控制部分的设计方案，进行了硬件控制部分的接线、调试工作。

A conventional two-circle diffraction system is set up. The work includes the design of light route, the establishment of control system for step motor and data collection, and the adjustment of the facility. A number of multilayers are measured using the diffractometer and a lot of useful experimental data are obtained.

作者在一台12KW转靶X光机的基础上，从光路设计到步进马达、数据采集等一套控制系统的建立，搭置了一台二圆衍射系统，并利用它做了大量的多层膜样品测量工作，并取得了一批有用的实验数据。

This paper introduces the application of the stepper motor control in tea twisting machine based on the SIMATIC S7-200 series PLC. And discusses the control system, the design and the method of the hardware.

介绍了基于西门子S7系列PLC的步进电机控制在茶叶揉捻机中的应用，论述了控制系统的设计方案及其硬件的实现方法。

The fault on the tool post may be due to the breakdown of machinery,electrical as well as control system.

0引言TDNC150A数控车床属台式数控车床，体积轻巧、结构紧凑，装有四工位自动回转刀架，使用WA-21S数控系统；它是典型的由单片机和步进电机组成的经济型数控车床，由于其价格低、适应性好，常常用于教学和普通零件加工；它的刀架结构是蜗杆蜗轮式，能够独立控制，要使其正常工作，涉及到机械、电气、控制系统等的稳定可靠工作。

More than ten years ago,"the negative day" the numerical control line cutting engine bed first applies and the actual production, starts the control bench is uses the transistor separative element assembly to become, after but uses the integrated circuit, now to is using the direction which the microcomputer controls to develop, Therefore this definition design "the electrical fire colored thread cutter automatic control" is by 8031 shrapnel machine took the control core, step-by-steps the electrical machinery achievement to actuate the electrical machinery, the diffraction grating a closed-loop control system which constitutes as the position examination part.

十多年前，&负旦型&数控线切割机床首先应用于实际生产，最早控制台是由晶体管分离元件组装而成，逐渐采用集成电路，现在正向采用微型计算机控制的方向发展，因此本论文设计的&电火花线切割机的电气控制系统&是以89C55单片机作为控制核心，步进电机作为驱动电机，光栅作为位移检测元件而构成的一个闭环控制系统。

Without changing the original electric circuitry and mechanical space of steel tape-printing machines, the mechanical number-wheel of steel tape-printing machines was reconstructed electronically, using microchip Atmega16L and motor driver MTD2009 chip and step-motor division driving technology.

介绍了国内钢卷尺印刷机的应用现状，并以某钢卷尺制造企业的印刷数码轮改造为例，在不改变原钢卷尺印刷机的电气线路和空间等前提下，采用Atmega16L单片机、步进电机驱动芯片MTD2009及其细分驱动技术，对钢卷尺印刷机的机械式数码轮进行了电控改造，从而为钢卷尺印刷数码轮研制了经济实用、可靠有效的替换件。

In a choice of the stepper motor, drive the movement parameters and standards for integrated design and calculation, and the implementation of the important components (such as the spline shaft, screw) the structural design and strength check.

文中进行了对步进电机的选择、传动机构的运动参数和尺度综合的设计与计算，并对重要的执行部件进行了结构设计和强度校核。

The UV curable TiO2 sol is prepared to form TiO2 thin film with 3μm critical dimension TiO2 nanocrystal island array by mixing TiO2 powder, dispersant, emulsifier, alcohol and UV-curable resin.

混合TiO2粉体、分散剂、乳化剂、酒精和光固化树脂等，制备可紫外光固化的TiO2溶胶，并经步进压印形成宽度为3μm的具有离散纳米晶岛微结构的薄膜，经保压复型优化压印工艺后处理，保证了离散纳米晶岛微结构的高保真度。

Then a numerical method, called Stepping Impulse Method, is introduced in the thesis to solve the percussion problem on hypothesises of instantaneity and Poisson's coefficients of restitution.

为处理复杂多体系统的斜碰撞问题，我们根据Poisson给出的冲量恢复系数的定义和碰撞的瞬时假定，给出了用于解决多体系统单点碰撞冲击问题的数值求解方法：步进冲量法。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。