电机的

Its thought is to change the model of the asynchronous motor through the coordinate, make it become direct current motor model, divided the electric current vector of the stator into according to the weight of two pieces of direct current with directional magnetic field of the rotor and controls, realize magnetism coherent and torque solve lotus root control , in the hope of the control result of the direct current reaching machine.

其思想就是将异步电动机的模型通过坐标变化，使之成直流电动机模型，将定子电流矢量分解为按转子磁场定向的两个直流分量并分别加以控制，从而实现磁通和转矩的解藕控制，以期达到直流电机的控制效果。

In this paper, the basic principles of vector control, coordinate transformation, the mathematical model induction motor control and fuzzy theory, for vector control characteristics, the design of a rate based on fuzzy logic controller to form a new vector control system, using MATLAB / SIMULINK Software simulation analysis.

本文阐述了矢量控制的基本原理、坐标变换、异步电机的数学模型以及模糊控制理论，针对矢量控制特点，设计一个基于模糊逻辑的速度控制器来组成新的矢量控制系统，利用MATLAB/SIMULINK软件进行仿真分析。

This paper mainly discusses the machine in the process of technological transformation of the transmission device, the motor-driven choice, The choice of ball screw relevant aspects of the analysis, demonstration, the adoption and application of a series of process.

本文主要论述了该机床在技术改造过程中对传动装置，驱动电机的选择，滚珠丝杠的选择等相关方面的分析，论证，采纳与运用的一系列过程。

Tuning the three parameters K_p, K_i and K_d on line. Some control difficulties due to the nonlinearity and model uncertainty of BLDC motorize recovered effectively. Tune the three parameters of PID controller to ameliorate the performance of control system.

对PID控制器的三个参数K_p，K_i和K_d进行在线调整，有效地克服了由无刷直流电机的非线性、参数时变性、模型不确定性等引起的控制难的问题。

Based on the model for self-excitation of synchronous generator and the idea of precise integration algorithm,a concise format of precise integration for fast simulation of the self-excitation is presented in this paper with the saturation characteristic of magnetic circuit of generators taken into consideration.

为此，给出了同步电机的自励磁数学模型，并结合精细积分法的思想，推导出一种形式简洁、仿真快速的精细自励磁积分格式，同时考虑了发电机磁路的饱和特性。

The impact of iron core conductance is reduced to the air gap; the impact of harmonic and slot coefficient on machines winding coefficient, self-inductance and mutual inductance is fully considered.

把铁芯磁阻的影响归算到气隙中，充分考虑了槽口系数以及谐波对电机的绕组系数、定转子绕组的自感、互感系数等参数的影响。

This paper describes realization software of the servosystem detaily.

三、详细介绍了系统软件的各个模块功能，包括DSP内部资源分配，数据的规格化处理；调节器的设计、控制策略及实现；转子磁极位置检测；通信等多个模块，从而实现对永磁同步电机的定位控制。

The variations of machine parameters, due to operation temperature, saturation level of rotor flux , rotor time constant, etc., lead to poor dynamic performance and incorrect stationary point of operation.

由于系统运行过程中的温升、磁饱和等因素会导致电机的参数发生变化，参数变化势必会影响拖动系统的动态性能并且可能会导致系统的不稳定运行。

Based on the requirements of ascertaining the orientation and dimension of toy major axis, calculating the flaming dimension and speed along with the toy major axis in American standard consumer safety specification for toy safety, combine with PLC control technology, high-performance and fine-segmentation driver as well as step-in motor.

基于美国玩具安全中要求确定玩具的主轴线方向和尺寸，并沿主轴线方向计算玩具燃烧长度和速度的需求，结合PLC控制技术、高性能细分型驱动装置和步进电机的工作原理，对研制玩具燃烧测试仪的工作原理、工作过程、结构设计以及软硬件结构和技术特性进行了详细论述，指出此测试仪可满足美国玩具燃烧测试需求。

Cooling fluid is circulated by a submersed circulator, such as a motor, at a substantially constant velocity past a substance to be cooled .

冷却液通过一诸如电机的浸没的循环器以一基本恒定的速度通过待冷却的物品。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。