frequency constant的例句大全

Research on Dynamic and Static Characteristic of Frequency Modulation System for Constant Frequency AC Power Supply

恒频交流电源频率调节系统动静态特性研究

MW variable speed constant frequency wind turbine from shenyang university of technology is a variable pitch wind turbine, it can change pitch to adjust power above rated wind speed.

由沈阳工业大学研制的MW级变速恒频风电机组属于变桨距型机组，它在额定风速以上进行变桨距调功控制。

Battery conductometer was a simplified alternating impedance test instrument that measured the values of conductance/ internal resistance under the condition of constant frequency and amplitude.

电池电导测试仪是在交流信号频率和幅度固定的条件下测取电池电导（或内阻），是简化了的交流阻抗测试仪；

Research and Realization of an Ultrasonic Cleaner with Constant Power and Frequency Tracing

频率跟踪、恒功率超声波清洗机的研究与实现

The output characteristic of the non linear throttle hydraulic system with the constant pressure source under the effect of sine function was discussed with describing function of frequency characteristic in the article.

采用频率特性的描述函数法，讨论带恒压源的非线性节流式液压传动系统在正弦函数作用下的输出特性。

Research on Rotate Speed Control of Variable Speed Constant Frequency Wind Turbine

变速恒频风力机转速控制研究

The choosing of constant pressure control point in frequency control water supply system

变频调速供水系统恒压控制点的选择

PLC Type Frequency Control of Motor Speed Constant Pressure Controlling Oil Transporting System

PLC变频调速恒压控制输油系统

Three-phase alternating frequency modulation control signal produced by 8051 CPU is magnified to control the switch of the silicon controlled rectifier in inverse main bridge circuit, thereby constant pressure speed-adjusting is realized.

由8051CPU产生三相交流调频控制信号，经放大来控制逆变主桥路中可控硅晶闸管的通断，从而实现恒压调速。

The master DG used V/ f control method to maintain voltage and frequency and to assume power load switching. The slave DG used the constant active and reactive power control.

其中，主动DG使用V/f控制方法维持微网的电压和频率并承担功率负荷的波动，从动DG使用PQ控制方式输出恒定的有功和无功功率。

an ideal excitation source would have an impulse function with frequency spectrum extends from zero to infinity and a constant amplitude.

理想激励源脉冲函数的频谱从零扩展到无穷大且有着恒定的幅值。

a constant pressure water-supplying system based on speed regulation by frequency variation

基于变频调速的恒压供水控制系统

packaging - transport packages - sinusoidal vibration test method at constant frequency

正弦定频振动试验方法

packaging - basic tests for transport packages - part 7 : sinusoidal vibration test method at constant frequency

包装运输包装件基本试验第7部分：正弦定频振动试验方法

steady-state operating performance of doubly fed variable speed constant frequency wind generation set

双馈变速恒频风力发电机稳态运行特性

The wind power generation technology has developed to the present megawatt variable speed constant frequency ( VSCF) from constant speed constant frequency ( CSCF).

风力发电机组已经由初期的恒速恒频（CSCF）风力发电发展到现在的兆瓦级变速恒频（VSCF）风力发电。

the tb register is incremented periodically with an implementation-dependent frequency, which may not be constant.

TB寄存器会以一种依赖于实现的频率周期性地增加，这个频率可能不是恒定的。

study of math model and control strategy of variable speed-constant frequency windmill generator

变速恒频风力发电机数学模型及控制策略研究

the motor and pwm inverter are seemed as one controlled object, so that the motor can obtain a constant magnetic field similar to the ideal circle and at last, solving the problems of torque, current, flux linkage ripple and inconstant switching frequency.

把电动机和PWM逆变器看成一体，使电动机获得赋值恒定的近似理想的圆形磁场，解决其转矩、电流、磁链脉动大，开关频率不恒定的问题。

use the in-built pid controller to adjust output of e frequency converter, realizing close-loop automatic adjustment and constant pressure water supply.

利用内置的PID控制器调节变频器的输出，实现闭环自动调节、恒压供水。