工作的估计

The key points of sensorless technology in PMBLDCM are to study a method which can detect rotor position accurately by simply method in whole speed range. After analyzing current sensorless methods of the PMBLDCM, it is found that those methods are successful at middle and high speed, but they often fail to detect rotor position at low speed when the back electromotive force is small or zero.

纵观目前的永磁无刷直流电机的无位置传感器控制方法，比较成熟而可行的方法多集中于电机在中高速区域运行时，能够较准确估计转子位置；电机处于低速、极低速、静止状态时电加热管，因为反电动势幅值较小或者为零，而无法正常工作。

Our investigations subsume the case of functions of bounded variation as special case and improve Guo and Khan\'s result[12]by giving a better asympotic estimate.

本章结果拓展了Guo和Khan[12]的研究工作，使之适用于更广泛的函数类，而且给出了一个更好的渐进估计。

Orsetta Causa of the OECD has estimated that a one-percentage-point increase in the marginal tax rate reduces the hours worked by women by about 0.7%.

经济合作和发张组织的Orsetta Causa估计每增加1%的边际税收将会减少0.7%由女性担任的工作时间。

But it would not be good to base your work on this estim a te, r a ther you should base it on the as sumption th a t the worst m a y h a ppen.

但是，你把工作放在这种估计的基础上就不好，要放在最坏的基础上来设想。

In the first half of this year we have scored some achievements in rectifying Party conduct.

这半年端正党风的工作是有成绩的，但是不要估计太高，现在还刚刚开始。

The current empirical diagrams and tables presented in codes and standards for estimating workability are based on tests of concrete without supplementary cementitious materials (fly ash, blast furnace slag, etc.).

在规范与标准中，用以估计工作度的经验图表是基於未添加强塑剂与矿物搀料等材料的混凝土。

Firstly, a method to estimate the rotor speed, which is based on BP neural network, is introduced in this paper. Secondly, the Park Vector approach is used to monitor and diagnose the inter-turn fault of the stator winding. Finally, this paper studies thoroughly a novel approach to detect rotor bar breaking fault, which is based on the perfect combination of the Hilbert Transform and digital filter.

具体工作如下：采用BP神经网络对异步电动机转子转速进行无速度传感器估计；对定子绕组匝间短路故障，采用派克矢量方法进行监测与诊断；对于转子断条故障，详细介绍了一种新的基于希尔伯特变换与数字滤波的在线监测方法。

Policy manifestos have zeroed in on the daily struggle many face in a country where the World Bank estimates 76 percent of people survive on less than dollar 2 a day: cheap rice, better schools and guaranteed work for the rural poor.

政策宣言把注意力集中在日常斗争许多面对在一个世界银行估计百分之76人靠每天不超过2美元维持生存的国家：廉价大米，较好学校和保障乡村老百姓的工作。

The Vintners' Association, which represents Dublin pubs, says it has clearer statistics: it reckons that trade is down about 16%, and that about 2,000 jobs have gone.

代表都柏林酒吧业的葡萄酒商协会声称有更清楚的统计数字：他们估计，生意下降了16%，而大约2000个工作岗位没有了。

According to initial estimates, short-time working is likely to be introduced for between 2,000 and 3,000 of the approximately 32,800 employees of BASF SE at the Ludwigshafen site.

据初步估计，短时间的工作很可能是2，000之间在路德维希港的巴斯夫现场东南约32，800 3，000名雇员介绍。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新