In order to solve those problems,this paper presents a signal conditioning method with the averaged value of the first harmonic and proposes an intermitted exciting mode.
为了解决这些问题,本文提出了基波平均值的信号调理方法和间歇激磁方法,检定结果表明了该种方法的有效性。
It is mainly composed of three parts: transducer, alarm device and magnetic field exciter.
研制的带压作业油管接箍探测仪主要由传感器、报警器、激磁器等部分组成。
In the IF transformer,the measure of improving exciting current was taken,and higher velocity of dragging charge from parallel capacitor when light loaded or no loaded was achieved to meet the condit.
在中频变压器中采用了加强激磁电流的措施,加快空载或轻载条件下前臂并联电容拉电荷的速度,从而满足了全桥准相移零压零流软开关主电路中前臂零电压开通和关断的条件。
This paper analyzes the forming process of unloading voltage and the relations among unloading voltage, phase electromotive force, exciting current and rotational speed in an alternator.
分析了汽车发电机抛负载电压的形成过程及其与发电机的相电动势、激磁电流和转速之间的关系,汽车发电机抛负载电压包含两个部分,且均由定子绕组本身产生,其一为定子绕组中负载电流突变产生的自感电动势,其特点是持续时间短,危害较小;其二为在激磁磁场作用下定子绕组产生的感应电动势经整流后得到的电压,其特点是电压持续时间长,危害较大,最后推导了发电机磁路在未饱和及饱和时抛负载电压的计算公式,并给出了相应的实例分析。
This paper makes a quantitative analysis of the transient state of output voltage and exciting current in an alternator, gives the expressions of output voltage and exciting current in no-load and load conditions, and deduces the calculating formulas of cut-off time and turn-on time of the power transistor in an electronic voltage regulator.
定量分析了汽车发电机输出电压和激磁电流的瞬态过程,给出了发电机在空载和负载时其输出电压及激磁电流的表达式,推导了电子式电压调节器功率管截止时间和导通时间的计算公式,由此得出的功率管最高开关频率可作为选择功率管工作频率的依据。
This paper discusses the excited magnetic frequency of an inouctive synchronous apparatus under working conditions within the aplitude range,the feeding rate of the working platform, the resolving rate of displacement measurement, the measurement accuracy, and theirrelationship.
本文介绍了感应同步器在幅值工作状态下激磁电压频率与工作台进给速度、位移检测分辨率以及检测精度之间的关系，为数控机床设计过程中正确选择感应同步器的激磁频率提供了理论依据。