查询词典 speed control

The relationships between welding pool width, wire extension and welding parameters including welding current duty ratio, base current, peak current, welding speed and wire-feeding speed were studied. Through large numbers of welding experiments, aluminum alloy pulsed MIG welding dynamic process were identified by the curve fitting method, and the mathematical models between welding current duty ratio, base current, welding speed, wire-feeding speed and wire extension were obtained, succeeding the model between the above parameters and weld pool width.

介绍了铝合金MIG焊焊接电流占空比、基值电流、峰值电流、焊接速度、送丝速度对熔宽的影响规律，并在其基础上，通过平板堆焊试验研究了这些参数对焊接干伸长的影响规律；在铝合金机器人脉冲MIG焊平板堆焊过程各焊接参数与正面熔宽之间的传递函数的基础上，采用铝合金平板堆焊阶跃试验，利用曲线拟合法辨识了铝合金机器人脉冲MIG焊动态过程传递函数，建立了焊接电流占空比、基值电流、焊接速度、送丝速度与焊接干伸长之间的对象数学模型。

The Company since its inception, has formed a computer-controlled high-speed FQ closure cut bag machine, RQD multi-purpose high-speed computer-controlled eagerly bag Machine, CD presentation of the ultrasound machine, sanitary napkins, bags Machine, RB-Gua-heat series, BX-wide since the high-speed computer eagerly vest-pocket, HQ computer-controlled high-speed high-precision cross-cutting machine, slicing, Cutter seven series Big series, more than 30 kinds of professional equipment bag the scale of production, we follow: quality, customer-oriented service principles and dedicated service to our customers, the major export products in Australia, Southeast Asia, China Taiwan, and other places.

本公司自创建以来，已形成了FQ微机光控高速封切制袋机系列、RQD微机光控多功能高速热切制袋机系列、CD超声波对折机系列、卫生巾袋机系列、RB热边卦机系列、BX微机高速全自热切背心袋机、HQ微机光控高速高精度横切机、切片、切纸机系列等七大系列、三十余种专业制袋设备的生产规模，我们遵从：质量第一、客户至上的服务原则，竭诚为广大客户服务，目前产品主要出口澳洲、东南亚、中国台湾等地。

A jet plane may reach a speed of around 3500 km/h but light travels at the speed of 1,071,360,000 km/h (a speed that you and I could not possibly comprehend), so you can imagine the difference in time that would be recorded if the clock were traveling near to that speed.

喷气式飞机能达到3500 km/h，但光速是1，071，360，000 km/h（一个你和我是无法想象的速度），那你想一想，如果那个钟能靠近光速的话，那个时差会有多大。

In order to achieve high-speed machining, not only have high-speed machine tool spindle, but also high-speed servo system, which is not only to increase productivity, but also to maintain high-speed cutting tool of the necessary conditions for normal work.

为了实现高速切削加工，机床不但要有高速主轴，还要有高速的伺服系统，这不仅是为了提高生产效率，也是维持高速切削中刀具正常工作的必要条件。

Then basing the selective thread bar, we can select the speed reducer whose model is XB1-50 . Basing the selective harmonies waves speed reducer ,we can confirm the servo electromotor whose type is 110SZ07 . Then we can design the spindles of every component ,which conclude the spindle of between the speed reducer and electromotor axis, which is a round bond sleeve spindle and the spindle between the speed reducer and the thread bar, which is flat bond sleeve spindle , the bearing , the track whose type is roll track HJG-D25, and the collective structure of the plate.

根据给定的工作台的切削力、传动精度、行程等确定丝杠为滚珠丝杠副FC1-2004-2.5，由丝杠的尺寸及转矩，选择减速器为XB1-50型的谐波减速器，本根据谐波减速器的输入力矩尺寸及减速比，选择伺服电机为直流伺服电机110SZ07，其转速为10000rpm，然后设计元器件间的联轴器，包括减速器与电机轴间的半圆键套筒联轴器、减速器与丝杠间的平键套筒联轴器，设计轴承，导轨为HJG-D25的滚动导轨，及工作台的总体结构。

CNC lathe spindle speed due to very high, for ease of workpiece clamping, multi-use high-speed hydraulic power chuck, because it is in the production plant has passed a strict balance, with a high speed (speed limit up to 4000 ~ 6000r/min), high clamping force (push pull for the largest 2000 ~ 8000N), high-precision, adjusting claw convenience, through-hole, long life and so on.

由于数控车床主轴转速极高，为便于工件夹紧，多采用液压高速动力卡盘，因它在生产厂已通过了严格的平衡，具有高转速（极限转速可达4000~6000r/min）、高夹紧力（最大推拉力为2000~8000N）、高精度、调爪方便、通孔、使用寿命长等优点。

Design and realization of engine speed system According to servocontrol technology of D.C and actual equipment, the paper has designed hardware circuit of engine speed system, drive circuit of simulation speed meter and indicator of simulation speed meter.

依据发动机转速系统的数学模型，给出了软件实现框图；依据有关飞行模拟器验证的国家军用标准，利用A/D转换卡采集到的发动机转速系统转速的仿真数据(稳态转速、加速转速和减速转速)，对发动机转速系统的仿真情况进行了验证。4。

To solve the aerodynamic problems resulted from high-speed trains when they pass through a tunnel, a model experiment system for high-speed trains was set up on the basis of analyzing the relative present experiment systems at home and abroad, and its similarity rules were derived. In this system, compressed air is used to impel a model train, and the speed of this train speed can reach 70 m/s.

为了解决高速列车进出隧道引起的空气动力学问题，基于对目前国内外高速列车模型试验研究现状的分析，建立了模型列车速度可达100 m/s的压缩空气式高速列车模型试验系统，并导出了模型试验的相似准则。

This simulation system will help to improve innovation design level of high-speed cultivation machine such as high-speed plow and high-speed rotary tiller. SPH; back-rotary tilling ; simulation ; soil-tool interaction ; high-speed cutting

因为牵涉到多相、松散和物性分散的耕作土壤在工作部件高速作用下的破坏过程以及破坏后土壤运动状态的描述，用连续体力学理论及其数值解法(有限单元法或者边界元法)很难描述该过程如有限单元法在大变形状况下会发生网

In order to produce domestic controllers of wind turbine generators, by analyzing corer problems, hardware type-choosing methods and software control processing, a solution to the pitch control algorithm of the MW wind turbine generator controller is proposed, based on the PID control of blade's rotate speed, accelerated speed and pitch angle.

为实现风力发电设备核心控制器国产化，通过分析风力发电机核心控制器所要解决的主要问题、硬件选型方法和软件控制流程，对兆瓦级变桨变速风力发电机组核心控制器提出基于叶轮转速、加速度和角度PID控制的变桨控制算法解决方案。

Eight cases of simple chordee of penis were adopted urethral extending.9 cases of severe simple chordee of penis were adopted primary urethroplasty.

8例单纯性阴茎下弯患者采取尿道延伸术，9例重度阴茎下弯患者采取切断尿道矫直阴茎一期尿道成形术。

She is a daintily dressed young lady.

她是个装饰娇艳的少女。