调速

A mechanical stepless speed regulator is adopted to make the curbing work. The speed can be regulated when the curbing work and can be slewed steadily.

本机配机械无级调速电机、驱动转盘旋转，转盘的转速可在工作时间任意调速，调速平稳。

The energy consumption analysis and experiment of the two systems, which are pump-control-motor speed governing system with inverter and hydraulic speed governing system with inlet throttle, are made. Some useful conclusions are obtained. New clews are provided to enhance the total efficiency of hydraulic speed governing system with inverter.

5对变频泵控马达调速系统和进口节流阀控马达调速系统进行了能耗分析和对比实验研究，得到了有益结论，为进一步提高变频泵控马达调速系统的节能效果提供了新思路。

In summary concatenation control system is one effective means to realize high control ability in series-wound asynchronous motors.

2从高性能调速要求考虑，应用控制理论，将其组成闭环调速控制系统，满足调速精度、动态响应等指标的要求。

The gearing is used pinion before but now it replace by driving band, it can make the machine use more long time.

各部分调速既可以分级调速也可以统一调速，使操作更加方便。

This paper is made up of 6 sections. In chapter 1, the domestic and overseas development of hydro-turbine governor and the general situation of microprocessor-based governor are introduced. The characteristics of programmable logic controller and the advantages of application in hydro-turbine governor system are described later.

本文总共分为六个部分：第一章介绍了水轮机调速器技术国内外的发展以及微机调速器的发展概况，并阐述了可编程控制器的特点以及将其应用于水轮机调速系统的优势。

It is proved that, frequency conversion has excellent accent speed, a brake capability, high efficiency rate, great credit rate factor and joint electricity effect and other merits.

实践证明，变频调速具有优异的调速和起制动性能，以及高功率因素和高效率的节电能力等优点，而被国内外公认为最有发展前途的调速方式。

The revolving, cylinder can make the sole, mid-sole and other processing material with round edge revolve automatically, so can automatically paste glue by circumference or semi-circum ference.

本机可另选用调速电动机，其转速可通过调速开关来调节，根据需要，可在其调速范围内任意选择理想的上胶速度。

The paper shows the experiment results and wave-line analysis compared with the MATLAB/SIMULINK simulation.

通过实验证明：该调速控制系统可以实现在5～50Hz范围内平滑调速，且具有良好的动静态调速性能，实验结果验证了系统设计的有效性、可行性。

ZL02 2 33851.9, the performance of its fast stepless speed regulation Pulley is a traditional pagoda shift by less than the governor, the product also has spindle speed digital form, and other new technology features, is the latest drilling replacement products.

数显无级调速钻床于2003年3月19日获国家专利（专利号ZL02 2 33851.9），其快捷无级调速之性能是传统宝塔带轮换档调速所不及的，该产品还配有主轴转速数显表等新技术功能，是钻床更新换代的最新产品。

YZB series crane and metallurgical variable voltage and frequency tree 0phase motor (hereinafter called'the motor').combing the functions ofcrane and pase asynchronous motors and strong points of the variable voltage and frequency technology have advanges of high mechanical strength and overload capacit,wide range of variable and stead operation. the basic technical data of the motor accords withIEC34-1 international standard and GB755 national standards stipulated with performances reached the 90s word level.the motor cam ne ised for a;; lomds of cranes.

YZB系列起重及冶金用变频调速三相异步电动机是将起重及冶金用三相异步电动机的特点与变频调速的优点集与一体，具有过载能力大机械强度高、调速范围宽、运行稳定的特点，其基本技术条件符合IEC34-1国际标准和GB755国家标准规定，电动机各项性能指标同国外九十年代水平相当。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。