查询词典 synchronous

Permanent magnet synchronous generator ; direct-driven wind energy conversion system ; sensorless control ; back-to-back converter ; phase lock loop

永磁同步发电机；直驱风电系统；无速度传感器控制；背靠背变流器；锁相环

Basing on the theory on Space-Vector PWM, the paper describes the mapping implemented by Neural-Network from tracked voltage vector to turn-on time of IGBT about rectifying sect of direct-driven synchronous generator excited by permanent magnets convertor system.

本文针对直驱永磁风力发电机变流系统的整流部分，利用空间矢量脉宽调制的原理，利用神经网络来实现跟踪的电压矢量到整流器三相桥臂开关时间的映射。

Combined with the nonlinear characteristics of wind turbines and the control strategy of generator-side converter and grid-side converter, used the design method for digital PI regulator, the back-to-back PWM converter on the wind-power system with direct-driven permanent magnet synchronous generator was built in the simulink of the MATLAB.

结合风力机的非线性特性和机侧变换器与网侧变换器的控制策略，应用数字PI调节器参数设计方法，在MATLAB/simulink仿真环境下构建了基于背靠背变换器的永磁直驱风力发电系统，系统包括风力机、永磁同步发电机、变频器、电网及其电气控制部分的数学模型，仿真结果表明风电系统的PI调节器参数设计合理且系统具有良好的运行特性。

A mathematical model of high-voltage short distance ring power transmission lines is developed and a multiple modules coupling model of this power transmission system fit for digital real-time simulation is further presented on the basis of known models of synchronous machine and composite load.

建立了高压短距离环形电力传输线的数学模型，并在已知同步发电机与综合负载模型的基础上，进一步提出了适合于该电力传输系统数字实时仿真的多模块耦合模型，同时给出了相应的数字积分方法。

The software join electronicarithmetic together with graphics system of computer, and makes quantificational,intuitionistic, synchronous and dynamic simulation. The software makes simulationsabout water hammer and surge in surge chamber of water diversion system or tailwater system in the Nuo Zha Du Water Power Station. Then the author validates thesoftware scientific quality and feasibility by the result data of physical modelexperimentations.

本文系统地介绍了作者研究开发的水力过渡过程可视化仿真软件的原理与方法，该软件把电算法与计算机图形系统结合起来，对水力过渡过程进行定量、直观、同步地动态仿真；然后对糯扎渡水电站引水、尾水系统进行水击与调压室水面振荡仿真，并通过水工模型实验结果验证了该软件的科学性与可行性。

In this paper,the threshold of the automatic control system for the synchronous differential lock of off road vehicle is analyzed.With the cornering model of a three-axle vehicle,the response limit of the system is analyzed theoretically.Through the analysis of the mechanical strength and the engaging characteristics of the dog clutch,the maximum difference of rotation speed between two parts of the dog clutch and hence the upper activation limit of the system are calculated

本文阐述了越野汽车差速器同步锁止机构自动控制系统的组成和工作原理，分析了其控制门限；利用所建立的三轴汽车转向行驶运动模型，在理论上确定了越野汽车差速器同步锁止机构自动控制系统的响应界限；通过对同步锁止机构牙嵌式离合器强度和接合特性的分析研究，确定了牙嵌式离合器允许的最高转速差，从而确定了动作限值的上限

With rapid technological development of gearless permanent magnet synchronous, it is required that the weighting system is able to not only provide signals for under load and full load to prevent overload, but also present and feedback precise weight signal to transducer, which automatically adjusts starting torque of motor by weighting signal and starts elevator smoothly.

随着无齿轮永磁同步电梯技术的迅速发展，要求称重系统不仅提供轻载、满载信号、限制超载、更应能够给出准确的称重信号，将称重信号反馈给变频器，变频器根据称重信号，自动调整电机起动力矩，使电梯平稳起动，称重系统也由限制超载的辅助部件，转变成为实现电梯起动力矩补偿，防止起动侧溜的重要功能部件。

Business:Δ production and marketing 15 KHZ, 20KHZ various sizes of plastic ultrasonic welding machine;Δ plastic production and marketing of various specifications High Frequency Weld, synchronous links, induced induction machine;Δ production and marketing of plastic welding machine rotary;Δ electric production and marketing of plastic weld Machine;Δ production and sales of various non-standard specifications for plastic welding machine;Δ professional design and manufacture of various specifications welding the first mold all kinds of welding and maintenance equipment; Note: welding the first mold and mechanical maintenance warranty period of three months, the new machine - Use of one year.

经营范围：Δ产销15KHZ、20KHZ各种规格超声波塑胶熔接机；Δ产销各种规格高周波塑胶熔接、同步熔断、诱导感应机；Δ产销旋转式塑胶熔接机；Δ产销电热式塑胶熔接机；Δ产销各种规格非标式塑胶熔接机；Δ专业设计制造各种规格焊头模具及维修各类焊接机械设备；注：焊头模具及机械维修保用期三个月，新机器保用期一年。

Speed and tension control of two-motor variable frequency speed-regulating system can be decoupled by the neural network inverse synchronous control method, and high performance control can be obtained by designing linear close-loop adjustors of speed and tension.

实验结果表明系统具有较好的动、静态性能和较强的抗负载扰动的能力，提出的神经网络逆同步控制方法为解决交流多电机系统解耦控制的难题提供了新思路。

Behind him his bassists and keyboarders joined into the driving hard-blues inspired jackhammer beat in synchronous turns, and when Key bounced up behind the drums, the music shifted and the crowd roared.

在他后面他的低音乐器演奏者和 keyboarders 努力地进入那驾驶之内参加-蓝调激发，手提钻在同时的旋转中打，而且当钥匙在鼓后面跳上的时候，音乐改变而且群众吼。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失