The most important and difficult contents of this paper are the research and development of the computer - testing system for current signal measurement of current - source in synthetic circuit 本文重点在于合成回路中电流源电流信号计算机测试系统的开发与研制。
The computer - testing system for current measurement of current - source in synthetic circuit has very important significance for the development of the computer - testing system of the whole synthetic circuit 本文研制的合成回路中电流源电流的计算机测试系统对于整个合成回路试验计算机测试系统的研制有着十分重要的意义。
Plc and dsp controller were used in current - source inverter and voltage - source device . based above , a high power scr current - source line - commutated inverter and a voltage - source line - connected inverter were developed 在电流型逆变系统中,运用可编程序控制器( plc )作为控制核心,并在mcgs组态平台实现和工控机的通讯。
Power electronic inverter technology is the key in energy feedback . this paper presented and analyzed current - source inverter and voltage - source inverter ' s work theory , and compared these two inverters . voltage - source inverter was the emphasis 电力电子的逆变技术是能量回馈系统的核心部分,本文讲述了电压型逆变电路和电流型逆变电路在能量回馈系统中的工作实现原理。
In the hardware aspects , this text analyses the voltage - source inverter and current - source inverters . in the same time this paper gives the strongpoints and weakness of them . in order to find the best way to induce the harmonic , the paper gives three control strategy , that is the voltage - source inverter adopt space vector pwm ( svpwm ) and singual pwm ( spwm ) and three - level inverter adopt singual pwm ( spwm ) 本文在逆变器的硬件电路上分析了电压型逆变器和电流型逆变器的特点;在控制策略方面,提出了三种方案:电压型逆变器分别采用svpwm 、 spwm控制策略和三电平逆变器采用spwm方法。
The whole large current testing system based on voltage - frequency converting technique has been finished in this paper , and the dc voltage signals , power frequency ac voltage signals are tested by this computer - testing system , the results are good , then the current of current - source in the synthetic circuit are tested by this computer - testing system 本文完成了一整套基于压频转换技术的大电流测试系统,首先测量了直流电压信号、工频交流电压信号,然后完成了对合成回路中电流源电流信号的测试。
In the computer - testing system of current signal measurement of current - source in synthetic circuit , the following contents are included , such as voltage - frequency converting technique , optical fibre isolating and transmitting technique , singlechip testing and controlling , plotting and printing of sampled data on pc ( personal computer ) 电流源电流信号的计算机测试系统包括传感元件部分、压频转换部分、光纤隔离传输部分、单片机测控部分以及pc机对采集数据的波形绘制与打印部分。
In this paper , the oscillatory circuit and synthetic circuit are analyzed theoretically at first and the main parameters of sythetic circuit under the conditions of the different current grades are gotten , that is not only the parameters " basis of synthetic circuit test , but also the important references of studying computer - testing system for current measurement of current - source in synthetic circuit 本文首先对振荡回路和合成回路进行了理论分析并确定了在不同电流等级条件下合成回路中的各主要参数,这不仅为合成回路试验提供了参数依据,同时也为合成回路中电流源电流信号计算机测试系统的研制提供了重要参考。