转子

In terms of cost and reliability, the indirect vector control system , which estimates the position of the rotor flux vector from the machine parameters, is widely used.

出于成本和可靠性的考虑，间接矢量控制系统，即基于转子磁链位置估计的矢量控制系统在实际中得到了广泛的应用。

First, the paper reviews the development and research of AC transfer speed system, introduces the different control strategy of transfer speed system for asynchronous motor, and discusses the basic principle of vector control system for asynchronous motor in detail,including the mathematics model and coordinate transformation of asynchronous motor, the fundamental equation of vector control, the estimation method of rotor flux, the system structure of vector control etc. Then, the paper lays stress on the fundamental principle, control algorithm and realization method in TMS320LF2407 of space vector pulse width modulation technology.

本文首先简述了交流调速系统的发展和研究重点，介绍了异步电机调速系统的不同控制策略，详细论述了异步电机矢量控制系统的基本原理：异步电机的数学模型和坐标变换、矢量控制的基本方程式、转子磁链的观测方法、矢量控制的系统结构等，并重点分析了空间矢量脉宽调制技术的基本原理、控制算法以及在TMS320LF2407中的实现方法。

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。

At loads below supercharging level and when coasting, i.e. when the throttle valve is closed, it lies in a vacuum: due to the low density its rotors are free-running and the amount of power required to drive them is low.

在增压水平以下时，滑行，即当节流阀关闭加载时，它是在真空中：由于密度低的转子自由运行和电力所需费用将他们低。

Engine completely new, designed by Ivchenko for this application with two stages of reduction gearing, freewheel with centrifugal clutch and improved power split between rotors.

全新的发动机，由伊夫琴科设计这个应用齿轮两项减少阶段，离心离合器和转子之间的权力分割飞轮改善。

The effect of unbalance distribution on a large rotor s frictional vibration behavior has been studied.

研究了柔性转子摩擦振动的复杂行为。

Therefore, the features of rotor and stator faults arise in the spectrum of the current Park vector in which the fundamental positive sequence component is filtered out.

也就是说，通过对旋转滤波后的电流Park矢量的频谱进行分析，就可以对电机的定转子故障同时进行监测。

Among them,20 cases were fixed with Gamma technique,and 40 cases with Richard technique.

从1994～1998年应用两种方法治疗转子间骨折60例，其中Gamma钉20例，Richard钉40例。

Well, if you were to gang together multiple rotors (or use ganged multi polled rotors) you would have a great deal of energy that would be available for a relatively small expenditure.

好吧，如果你来一起团伙多转子，你将有很大的能量，将可为相对小的开支。

Left: Basic operation of the Gerard rotary engine.

左：基本操作的杰拉德转子发动机。

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％。