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    Evaluation of measurement uncertainty of calibration voltage error of electrocardiograph
    心电图机内定标电压示值误差测量结果的不确定度评定
    A Voltage-Error Compensation Strategy for Multi-level Inverter based on SPWM Control
    一种SPWM控制的多电平逆变器电压误差补偿策略
    DIGITAL PWM OF AC-AC MATRIX CONVERTER BASED ON OUTPUT-VOLTAGE ERROR FUNCTION
    输出误差函数的交-交矩阵变换器数字PWM调制技术(英文)
    Inverter Voltage Error and Bypass Control of Uninterruptible Power Supply
    UPS电源逆变器输出电压误差与旁路控制
    The MRAS Flux Observer with Stator Voltage Error Compensator
    具有定子电压误差补偿的MRAS磁链观测器
    A Compensation Method for Voltage Error of Full Order Observer of Modelling Reference Adaptive System
    模型参考自适应系统全阶观测器的一种电压误差补偿方法
    The Discussion of Affection of Voltage Error and Electric Current Error to the Working Quality of X-ray Machine and of the Solution to it
    电压、电流值误差对X射线机工作质量的影响及解决探讨
    The paper introduces the application of optic fibre voltage,current sensor in coal mine. At industrial frequency voltage of 4 ̄6kV and current of 100 ̄1000A it is verified that voltage error is less than 1% and current error less than 3% of optic fiber electric parameters sensors.
    介绍了光纤电压、电流传感器在煤矿中的应用,在工频电压4~6kV和工频电流100~1000A条件下验证了该光纤电参数传感器电压误差小于1%、电流误差小于3%。
    The results of practice test show that the high accuracy of the algorithm can limit the constant voltage error within ±20 mV.
    实际测试结果表明 ,该算法精确度高 ,可使恒压误差控制在± 2 0mV以内
    The output voltage error is 0.4%.
    输出电压误差率为0 4%。
    The rectifier and the inverter correspondingly select thecurrent and voltage error of the DC line nearby their converter and the rate of change as input signal of fuzzy control,the output of fuzzypart as one of the input signals of neural network,so as to control current and voltage respectively.
    整流侧和逆变侧分别提取直流线路电流、电压误差及其变化率作为模糊控制器的输入,输出作为神经网络的输入,分别控制电流和电压。
    The 1 372s FUDS test results show that the maximum voltage error of these two models are 1.02% and 1.39% of battery pack rated voltage respectively,meeting the accuracy requirements of electric vehicle simulation.
    通过1 372 s的FUDS实验验证,两个模型最大电压误差分别为电池组额定电压的1.02%和1.39%,精度满足电动汽车系统仿真要求。
    The HSPICE simulation results show that its transfer efficiency is higher than 78% while its output voltage error is limited within 10mV.The results also show that it's highly reliable with the maximum load current 240mA.
    HSPICE仿真结果显示,其转换效率高于78%,转换误差在10mV之内,稳定性高,最大负载电流可达240mA.
    FEED-FORWARD CONTROL STRATEGY OF VOLTAGE ERROR ON DC-LINK CAPACITORS IN CURRENT-MODE CONTROL HALF-BRIDGE INVERTER
    电流型控制半桥逆变器直流分压电容电压偏差前馈控制技术
    Research on Current-Mode Control Half-Bridge Inverter(Ⅱ) ——Feed-Forward Control Strategy of Midpoint Voltage Error on Input Capacitors
    电流型控制半桥逆变器研究(Ⅱ)——直流电容电压偏差前馈控制技术
    Specific issues examined are: compensation for the variation of the stator resistance, the offset error of the DC bus voltage, the voltage error generated by the forward voltage drop the dead time of the switches, improvement of the steady state performance, and the speed sensorless control for the PMSM DTC drive system are of major concern in this thesis.
    定子电阻变化,直流母线电压漂移,开关器件反向相电压降、逆变器死区时间引起的电压误差的补偿,提高系统稳态运行性能以及永磁同步电机直接转矩控制的无速度传感器运行方案等问题都是本文研究的重点。
    2. Based on the analyses of the relationship between the voltage error / the current error and the flux observation error of the full order observer, this paper presents a novel pole point setting method with the condition of the definite motor speed.
    通过分析参数偏差对全阶状态观测器磁链观测稳态误差的影响,并通过仿真得出:上述的极点配置方法,同样可以降低定子电阻偏差和漏感偏差在极低速范围对磁链观测稳态误差的影响。
    The mathematic analyses and the computer simulations both verify that such method can reduce the influence of voltage error / current error, which is very important to the precision improvement of the flux observation.
    3.在转速未知的条件下,通过对MRAS 磁链观测器的动态性能以及磁链观测稳态误差的分析,并通过仿真得出:磁链观测和转速控制动态性能的改善与磁链观测稳态误差和转速误差的降低是互相矛盾的。 对于电动汽车中异步电机控制来说,精确的磁链观测更为重要,当对动态性能要求不高时,可以不进行极点配置。
    In this control scheme, the voltage error is processed by PI algorithms first, and then the current of the capacitor which equal to the differential of the voltage is imported to compose a two-loop control.
    该方案先对输出电压误差进行PI调节,在此基础上引入相当于输出电压微分的电容电流反馈信号构成双环控制,使逆变器输出电压具有良好的静态特性和动态特性。
    The comparison to the measured data demonstrates that the double-actuated model improves the voltage error less than 1%, while the single-actuated model provides the voltage error only less than 10%.
    与实验结果比对表明:经修正的模型误差小于1%,较之传统模型10%的误差有很大提高。 这是本文的创新工作之一。
 

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