根据冲击电流计测直螺线管磁场的实验电路原理，利用数值计算方法，对减少测量的系统误差进行了理论分析。
According to circuit principle of the experiment of measuring magnetic field in straight solenoid by impact galvanometer, theory analysis on reducing system error is done by using numerical method.
文中分析了系统的工作原理，设计了硬件电路和双模控制算法。最后给出系统实验结果。
Also, this paper analyses the system working principle, the design of hardware circuits and the double-mode control algorithm, with the experimental results given eventually.
文中着重阐述系统和功放电路的工作原理、数字脉宽调制器的硬件电路、软件设计方法，并给出实验结果。
In this paper, the operation principles of the total system and power-amplifier circuit, design method of digital PWM hardware circuit and software are described, and.
文中讨论了系统的检测原理，给出了具体的硬件实现电路、软件设计，并对系统进行了实验验证。
In the article, the detecting principle is discussed, the specific hardware implement circuit and software designing are given and the system is proved by experiment.
在硬件方面，本文设计了一个基于32位ARM微处理器LPC 2104的硬件实验平台，并结合嵌入式系统远程监控的需要，给出了硬件电路的整体设计原理和实现方法。
The 32-bit ARM embedded microprocessor, LPC2104, is selected as the core of hardware experiment circuit board, and the designing of hardware circuit is given.
主要介绍用于三相四线制的有源电力滤波装置的研究工作，给出了系统的基本补偿原理、主电路及控制电路结构，并利用该装置进行了补偿实验。
This paper introduces an active power filter device used for three phase four wire. The compensation principle and structure of main circuit and control circuit are given.
主要介绍用于三相四线制的有源电力滤波装置的研究工作，给出了系统的基本补偿原理、主电路及控制电路结构，并利用该装置进行了补偿实验。
This paper introduces an active power filter device used for three phase four wire. The compensation principle and structure of main circuit and control circuit are given.
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