查询词典 motor control

Methods: Sixty patients with acute cerebral infarction with hemiparalysis were divided randomly into experiment group (n=30) and control group (n=30). Electrotherapeutic combined with early regular rehabilitation training were applied in experiment group. The early regular rehabilitation training were applied in control group. The motor function and ADL of all patients was assessed before and three week after treatment.

60例脑梗死偏瘫患者随机分为实验组（30例）与对照组(30例)，实验组采用电刺激及常规康复治疗，对照组仅接受常规康复治疗，分别于治疗前和治疗后3周进行偏瘫肢体运动功能和日常生活活动能力的评定。

Enterable order control system: it can bring into order control exchange communication system through meet pole, and talk with some communication motor.

可接入程控系统：通过接口可纳入程控调度交换通讯系统，与设定的某台电话机通话。

To solve the control problem of micro-flow or low flow on pesticide in the course of variable rate spraying, an electromechanical flow control valve was developed with a miniature pin valve, a direct current motor, and gearset.

采用小型针阀、直流电动机及减速器设计了机电流量控制阀，解决了变量喷雾过程中药液微小流量的控制问题。

Not only accurate speed control, but also accurate position control are achieved by controlling the dispersed step magnetomotive force of synchronous motor.

对同步机离散的步进磁势进行控制，不仅可以获得精确的速度控制，还可进一步获得精确的位置控制。

The most important part in the control system is MPC02 card which receives control signals from the PC and sends instruction to step motor, sever moter, electric-valve, annunciator and other apparatus.

本文研制的检测台为上—下位机控制系统，上位机采用PC机，下位机是基于MPC02控制卡的控制系统。

The speed-sensorless vector control and the identification of motor parameters in this paper are the two novel research of vector control.Using asynchronous machine's mathematic model in three-phase static reference frame, this paper has derived it's mathematic model in two-phase static reference frameand in two-phase rotating reference frame, and got the coordinate transformance formulus based on the constant magnetic force and power force, by compared different field orientation methods, we can find that field orientation at rotor field can realize the decoupling of the stator current flux component

无速度传感器矢量控制和电机参数辨识是矢量控制的两个新的研究方向，本文利用异步电机在三相静止坐标系下的数学模型推导出两相静止坐标系、两相同步旋转坐标系下的数学模型，根据磁动势守恒和功率守恒的原则，得出各坐标变换公式；通过不同磁场定向方式的比较发现，异步电机按转子磁场定向时定子电流励磁分量和转矩分量可以比较方便地实现解耦。

Permanent magnet synchronous motor drived by triphase sinusoidal current is research object in this paper. Its mathematics models are set up and the different control menthods are discussed, controlling Principles of flux linkage and torque are discussed under DTC and the block diagram of PMSM with DTC is Presented. At last the control mothod is proved correct using MATLAB simulation software.

文章以二相正弦波驱动的永磁同步电机为研究对象，建立了永磁同步电机的数学模型，对于不同的控制策略进行了对比分析，并深入探讨直接转矩控制中永磁同步电机的磁链和转矩的控制思想，给出控制方案，最后利用MATLAB仿真工具验证了控制方案的正确性。

Test is done on an arced linear synchronous motor test-bench and result shows a fast dynamic response achieved by direct torque control method and the control algorithm is also verified.

在圆弧型同步直线电机试验台上进行试验，试验结果较好的体现了直接转矩控制追求电机快速动态响应的特性，验证了控制算法的正确性。

Urban traffic control systems in China are usually introduced from foreign countries, such as SCOOT and SCATS. These systems are the passive control system and mainly designed for motor traffic,which are proved not adapted to the mix traffic condition in China.

目前中国城市道路交通控制系统基本上是引用SCOOT、SCAT等国外开发的系统，这些系统皆是建立在机动车为主的道路交通条件基础之上的被动型控制系统。

ABSTRACT The control of induction motor with high precision and strong robustness is an important field in electric drives. It has been widely applied in robot control, machine tool drive, wiredrawing equipment and material testing machine, etc.

高精度、强鲁棒性的交流电机调速是电气传动领域的重要研究方向，在机器人控制、数控机床、材料试验机、拉丝设备等方面有越来越广泛的应用。

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。