直流电机

Focusing on some disadvantages in standard BP algorithm, such as low convergence rate, easily falling into local minimum point and weak global search capability, Genetic algorithm is used to optimal the connection weight of BP Algorithm in this paper, and construct a GA-BP algorithm of evolutionary neural network, and the algorithm is applied to the control of BLDCM speed adjusting system.

针对标准BP算法存在全局搜索能力弱和易陷入局部极小点等缺点，本文将遗传算法与BP神经网络相结合，构造了一种新的进化神经网络GA-BP算法，并将该算法应用于无刷直流电机调速系统的控制，仿真结果表明，与传统的PI控制系统相比，该算法得出的电机控制曲线几乎无超调，与基于BP算法的速度控制系统相比较，具有收敛速度快、不易陷入局部极小的优点。

Networked blushless DC motor driver is designed for the study of integrative motor.

为了研究一体化电机，进行了网络化的无刷直流电机驱动器设计。

Afterwards, we put forward a system solution for speed-control of blushless DC motor in this paper. Its hardware is based on SST89E554RC, and it drives the motor through a PWM circuit which is high-performance and low-cost.

本文设计了无刷直流电机的调速系统的整体方案，设计制作了以SST89E554RC为核心的硬件控制电路，该电路通过一个高性能、低成本的PWM脉冲形成电路，对电机进行驱动控制。

Sensor less blushless direct current motor is the prospect of brushless direct current motor, however, the key factors which rotor position estimation can be diffcultly gotten at standstillor low speed limit brushless motors use.

无位置传感器无刷直流电机是无刷电机的发展方向。

At the same time the main control system has been described detailedly,which includes the control of the taboret's step motor and the main shaft's direct current machine,also their gang control.

介绍了一种基于单片机的家用电脑绣花机的电控系统，对其系统结构和硬件系统作了部分介绍，并且对其主控部分即绣框步进电机和主轴直流电机的分别控制以及联动作了详细的描述。

First removed the external electrical wiring, and do a good job in marking, for example, asynchronous motor, three-phase power should be prepared with the corresponding tag line for the DC motor, and Patrick do a good job should be winding, armature winding, etc. corresponding with the external wiring tags.

先拆下电机的外部接线，并做好标记，例如对于异步电动机，应做好与三相电源线对应的标记，对于直流电机，应分别做好并励绕组、电枢绕组等与外部接线对应的标记。

Among them, the arm sport the adoption treads into the electrical engineering to drive, the wrist and bedrocks exercise to adopt the direct current electrical engineering to drive, the hand claw action adoption the air pressure drive.

其中，手臂运动采用步进电机驱动，手腕和底盘运动采用直流电机驱动，手爪动作采用气压驱动。

Based on the comparison between several present schemes controlling DC motor with PWM, a design scheme for drive circuit fit to EPS is presented, in which both low side and high side are N-MOS and high side is either in fully-off or fully-on state while low side is controlled by logic circuit.

在分析电动助力转向系统电机驱动电路性能和可靠性要求的基础上，对比常用的PWM控制直流电机的优缺点，提出了电动助力转向系统驱动电路的设计方案：上、下管均采用N沟道MOS管，上管常通或常闭，下管由PWM逻辑电平控制。

The introductive robot arm of this text can output two lines pulses by the PLC, driving the horizontal stalk, and the perpendicular stalk to drive the electrical engineering actuator respectively, to control the robot arm precision of the horizontal stalk and perpendicular stalk at the fixed position, tiny move switch input the position signal to the PLC.The direct current motor drags along to begin the claw and bedrocks to revolve, the position signal from revolve the code dish and near to the switch feedback to host of PLC;The electromagnetism valve control the machine hand open and close, thus carry out the function of the machine hand precision work.

本文介绍的机械手是由PLC输出两路脉冲，分别驱动横轴、竖轴步进电机驱动器，控制机械手横轴和竖轴的精确定位，微动开关将位置信号传给PLC主机；直流电机拖动手爪和底盘旋转，位置信号由旋转码盘和接近开关反馈给PLC主机；电磁阀控制气开阀的开关来控制机械手手爪的张合，从而实现机械手精确运动的功能。

In the motor drive controller, current sampling cir- cuit protecting circuit, pressure adjusting circuit and signal insulating circuit are made up of DSP and its peripheral circuit. CPLD is employed to deal with the brushless DC motor＂ s rotor position signal in order to realize.

电机驱动控制器采用微控制芯片和外围电路构成了电流采样、过流保护、压力调节等电路，利用CPLD实现无刷直流电机的转子位置信号的逻辑换相。

At the rear was an innovative combination transaxle with the gearbox, clutch, differential, and inboard-mounted drum brakes.

在后面是与变速箱，离合器，差的创新结合变速，和内侧安装鼓式制动器。

For more people can apprecaite and have the master work, there is reproduction painting appears in the market, the large various selection of paint,the high saturation of color plus the plentiful sfumato, to make the reproduction perfect copy and detail as original painting, so as to meet the requirment of amateurs who love art paintings,they do not need to pay high price to get classical paintings.

颜料色域广，色彩饱和度高，色彩层次丰富，图像色彩还原真实，能完美的复制原作，满足艺术爱好者欣赏，艺术爱好者们不用支付昂贵的价格就能拥有经典油画。