查询词典 motor control

According to the fundamental of vector control,a digital closed-loop control system of permanent magnet synchronous motor based on dsPIC30F6010 was designed and a model of permanent magnet synchronous motor in the estimation two phase rotating reference frame was introduced and an extended back electromotive force equation was deduced.

根据永磁同步电动机矢量控制的基本原理，设计了一种基于 dsPIC30F6010的无位置传感器永磁同步电动机控制系统，并介绍了在估算两相旋转坐标系下的PMSM模型，推导出了反电势方程的扩展形式。

This thesis is main to make use of the representative chip TI company′s TMS320LF2407A DSP which is used for the control of motor to complete the control of the speed,direction parameter and other parameters of DC motor.

本论文主要利用用于电动机控制的代表性芯片TI公司的TMS320LF2407A完成对直流电动机的速度、方向等参数的控制。

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。

A control system of step motor that enable operator to control displacement and adjust velocity discretionarily was designed,using the TMS320LF2407 chip and the step motor drive.

它输出的位移与输入的电脉冲个数成正比，转速与脉冲频率成正比，适用于在数控开环系统中做执行元件，用途十分广泛[1]。

A control system of step motor that enable operator to control displacement and adjust velocity discretionarily was designed, using the TMS320LF2407 chip and the step motor drive.

本文从工程应用的角度出发，以TMS320LF2407 DSP芯片作为控制核心，结合专用步进电机驱动器，设计了一套可同时控制8个电机，且具有位移控制和多级调速功能的步进电机控制系统。

In the power supply lines in intercourse of 50HZ, 3300V, start or end, the main motor of comprehensive explorer, scrap –block transporter, reship, crusher on the floor, motor of oil pump, cool the motor of Fan, start, end, double exchange and control the tape adhesive spread and tighten motor, it can also protect the electromotor and power supply lines.

KJZ3-1550/1140Z 矿用隔爆兼本质安全型智能真空组合开关适用于含有甲烷混合气体、具有煤尘爆炸危险的煤矿井下。在交流50HZ ，电压3300V 的供电线路中，对综采工作面采煤机、刮板运输机、转载机、破碎机起动、停止及双速切换、主、从顺序进行控制，并能对电动机及供电线路进行保护。

Based on accurate step motor system parameters, the state equations describing step motor dynamic characteristics are set up. The operation of the self synchronization closed loop control system is simulated on computer. In the research the principle analysis and system design have been done about self synchronization closed loop operation. The relation between rotating EMF and the rotor position of the step motor is discussed. Through detecting the zero value of rotating EMF the rotor position of the step motor is indirectly obtained.

在得到准确的步进电动机系统参数的基础上，建立了描述步进电动机动态特性的状态方程，并对自同步闭环系统的动态特性进行了计算机仿真在论文的研究中，分析了旋转电势与电机位置的对应关系，通过旋转电势的过零检测间接得到转子位置信号，利用这种"间接传感器"方法实现了步进电动机的自同步闭环控制，论文从原理分析和系统设计两方面进行了研究。

In the power supply circuits in intercourse of 50HZ, 1140V, start or end the main motor of adhesive tape transportation, motor of oil pump, cool the motor of Fan, start or end of tape adhesive spread and tighten motor, take-up reel, control in order or double exchange, excavate coal machine and also protect the electromotor and power supply lines.

KJZ2-1550/1140Z 矿用隔爆兼本质安全型智能真空组合开关适用于含有甲烷混合气体、具有煤尘爆炸危险的煤矿井下。在交流50HZ ，电压1140V 的供电线路中，对胶带输送机主电机、油泵电机、冷却风扇电机及胶带张紧电机、卷带电机进行起动、停止控制，并能对电动机及供电线路进行保护。

The blushless DC motor has been developed intensly in the latest years. This kind of motors have the merits of both the DC motor and the AC motor, including the high power density and small volume. But it needs a complex and expensive control system, which becomes the biggest obstucle for the blushless motor to be further used.

电气传动域中的无刷直流电机近年来得到了飞速的发展，该电机将交流电机和直流电机的优点相结合，并且具有较高的功率密度和较小的体积，但是其控制系统复杂，代价大，这些都困扰着它在民用领域的进一步应用。

In China leading by the No.1 Motor Corporation and the Dongfeng Motor Corporation , Jiefang and Dongfeng brand cars possess the absolutely control role. The market ratio of China Heavy Motor Corporation and Beiqi Futian Motor Corporation is also increasing rapidly. Kreisler , Volvo and Renault Corporation all come into China. Modern and GE Corporation are also eying covetously.

国内重卡市场以一汽和东风为龙头，&解放&牌卡车与&东风&牌卡车占据着卡车市场的绝对统治地位；中国重汽和北汽福田市场份额的增长也非常迅猛；此外，戴姆勒－克莱斯勒、沃尔沃和雷诺已全部进军中国市场，韩国现代和通用也对中国卡车市场虎视眈眈。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。