查询词典 motor-driven

This thesis proposed the design and implementation of an ASIC for the motor control with DTC technology. Note that this ASIC is implemented by cell-based Design style with Verilog language.The basic principle of the Direct Torque Control is to select the switch sequence of the inverter. Those switches will control the magnetism and torque of the stator, to induce a fast response of the induction motor. Furthermore, the d-q axle's static coordinate, which is transferred from both the three-phase current and voltage, is used to compute the stator's magnetism and torque. By comparing with original values, those magnetism and torque will be calculated and set to new data. Then the switching table and the hysteresis controller are decided with the new data to generate a voltage vector and to control the stator magnetism and torque.

直接转矩控制的基本原理为经由侦测马达定子磁通与转子转速，来适当的选择变频器功率电晶体的切换状态，以获得快速且不易受外在环境影响的马达控制响应；首先，根据量测三相电流与利用变频器的切换状态取得马达的三相电压，将其转换至d-q轴静止座标，然后藉此估测马达的磁通量与转矩量，再分别与侦测的定子磁通量和转矩量比较后，得到定子磁通量与转矩量比较的结果，再利用DTC电压向量切换表(DTC Voltage Vector Switching table)，依定子磁通与转矩的比较值及马达所在的角度位置，来选择一个适当的电压向量，进而依切换顺序来激发功率电晶体，达到控制感应马达的目的。

Pumps installed in the rolling bearing for the motor, bearings should be removed outside the cover, and then release the fastening screw cover and base shell and cover the seams to do a good job marking (both before and after the end of tag should not be covered the same), will cover the unloading of the fastening screw screwed into the expertise of the Motor Cover Screw in the two settings will be the top cover.

水泵中对于装有滚动轴承的电机，应先拆下轴承外盖，再松开端盖的紧固螺钉，并在端盖与机座外壳的接缝处做好标记（前后两个端盖的标记不应相同），将卸下的紧固端盖的螺钉拧入电机端盖上专门设置的两个螺孔中，将端盖顶出。

A shear-type safety bolt retains the motor head and prevents case bursting failure in the event of excessive pressure buildup in the motor.

剪切型的安全螺栓保留汽车头部和防止爆破失败的案例，在发生过度的压力，在建设汽车。

Less than one second after liftoff, a failure of a safety bolt in the C-400 motor caused the sudden release of chamber pressure, blowing the propellant into the rocket body, and caused the motor to be ejected (visible in approximate middle of smoke trail).

不到一秒后升空，失败的一个安全螺栓，在 C - 400型汽车所造成的突然释放商会的压力，吹推进剂到火箭机构，以及所造成的汽车被驱逐出场。

High speed rotation solid propellant rocket motor recording apparatus which we designed is going to resolve pressure testing of rocket motor in high speed rotation.

本文设计的高速旋转固体火箭发动机内置动态参数记录仪，着重解决火箭发动机在高速旋转状态下压力测试问题。

The paper briefly deals with methods and steps of changing three-phase single-speed motor into multi-speed motor.

三相单速异步电动机可以通过定子绕组的改绕成为多速电动机。

In order to improve precision and flexiblity, reduce power consumption and volume of motor control, QuartusII software was adopted to develop a three-phase stepping motor controller based on FPGA.

为提高电机控制的精确度和灵活度，并减小其功耗与体积，用QuartusII软件开发了一种基于FPGA的三相步进电机控制器。

This paper introduced how to use digital AC servo motor in the universal material testing machine, and give an example of applying MINAS A serial servo motor to 5 tons material testing machine.

主要介绍了全数字式交流伺服电机在万能材料试验机控制系统中的应用，并给出了将松下MINAS A系列伺服电机用于5吨材料试验机的例子。

The core of control circuit was Cygnal MCU C8051F, which provides a direct current motor universal controller, producing PWM control signal directly according to the need of motor control.

本论文的控制电路设计通过采用 Cygnal 公司的 C8051F 系列芯片，设计了一个直流电机的通用控制器，可以根据电机的控制需要直接产生 PWM 控制信号。

However, the problem depends on majority electromotor is not very effective, resemble induction motor, universal motor and wasteful electromotor instrument drive in that way efficiency is low.

然而，问题在于绝大部门电念头都不长短常有效，就像感应电念头、交直流两用电念头和不经济的电念头械驱动器那样效率低下。

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。