查询词典 torque

In this paper, to reduce cogging torque in solid-rotor permanent magnet synchronous motors, an analytical method, which was based on energy method and Fourier expansion, was proposed to obtain the expression of cogging torque, which can express its relation with design parameters.

为削弱实心转子同步电动机的齿槽转矩，文中提出了一种基于能量法和傅立叶分解的的解析分析方法，给出了能明确表达齿槽转矩与设计参数关系的齿槽转矩解析表达式，据此研究了极弧系数对齿槽转矩的影响。

In order to reducing the cogging torque of PM brushless direct current machines,an analytical method,which was based on energy method and Fourier expansion,was proposed,which can express how to match slot and pole to reduce cogging torque.

为了削弱永磁无刷直流电动机的齿槽转矩，首先利用能量法和傅里叶分解法进行分析并提出了减小齿槽转矩的最佳极槽配合。

Rated at 230 horsepower at 5250 rpm, with peak torque of 250 pound-feet at 4000 rpm, the Galant's V6 provides plenty of power and tremendous torque from a wide part of its rev range.

额定电压为230马力，在5250转，与峰值扭矩二百五十零磅在4000转，在戈蓝的V6发动机提供动力，并从它的转速范围宽很多部分的巨大扭矩。

Owing to the limit of the conventional process, the output torque of the prototypes is very small. So, the hairspring torque-angle characteristic instrument is fabricated. Through making an experimental on the prototypes, the experimental results are consistent with the theory analysis, so the theory analysis is validated.

由于受传统制造工艺的限制，理论样机的转矩输出比较小，作者又制作了采用钟表游丝作为测量元件的游丝矩角特性测量仪，对原理样机进行了实验研究，实验结果与理论计算值较好的吻合，从而验证了理论分析的正确性。

From the view of torque controlling strategy, the relation between the torque controlling strategy such as the electric current feedback method、 PWM open loop method etc and the vehicle driving way is analyzed firstly, then the conclusion could be drawn that the PWM open loop method has more advantages than the electric current feedback method when they are both used in the same vehicle which is direct driving by hubcap motor. Secondly, based on the electric motor mathematic model and its experiment, a new permanent brushless dc motor phase electric current detector method in which a digital signal processor and single current sensor are used is introduced.

从转矩控制策略角度来看，分析了电流反馈法以及开环PWM电压调速控制方法与车辆的驱动方式关系，得出了电机驱动电压受限的情况下，无论是从对车辆的动力性能影响还是从对车辆的驱动要求来讲，开环PWM电压调速控制方法较电流反馈法更适用于以轮毂电机直接驱动方式的两轮电动车中；其次，根据电机的数学模型以及电机试验波形，提出了一种利用数字信号处理器以及单个电流传感器检测三相永磁无刷电机电枢电流的新方法，这种方法具有较强的适应性、实时性，它可以根据控制系统的要求，适时地提供所需电流数据，是目前许多文章关于无刷电机相电流平波的重要技术基础。

There are several problems in the conventional direct torque controlsystem such as large torque-ripple,inconstant inverter switching frequency.

摘 要：传统的直接转矩控制存在转矩脉动大、开关频率不恒定等问题。

On the basis of the calculation results, the cogging torque, rotation induced voltage and static torque is calculated.

利用磁路元的计算方法，计算了电机的定位转矩、旋转感应电压和静转矩，本文采用的磁路元法弥补了传统的永磁磁路计算方法之不足，计算精度能够满足工程计算的要求。

Once again, the most common torque need for the lower incisors is labial root torque to bring them into a more upright position.

再次，最常见的扭矩需要下切牙是唇根扭矩，使它们更加垂直位置。

Hence, an additional 5° of labial root torque was added to the lower incisors, providing them with -6° of torque (figure 9c).

因此，额外的5 °的唇根扭矩添加到下切牙，向他们提供与-6 °扭矩（图9C条）。

In lingual orthodontics, the applying of intrusion force was less useful than the well control of the M/F ratio to control the torque of upper incisors. If the crown of the incisor had been inclined lingually, it would be very difficult to recover the torque.

3舌侧正畸中，首要的是控制好M/F值，否则即使加大垂直压低力也难以抵抗冠唇向转矩的不足；而且一旦产生舌倾趋势，将比唇侧正畸更难以恢复。

Do not gum up the work by telling mother what we are going to do .

别告诉母亲我们要干的事，那会把事情搞糟的。

In recent years, application of the partial prestressed concrete beam s is developed.

近年来，随着部分预应力砼梁应用的推广，发现我国规范所采用的名义拉应力法的计算结果不稳定。