本文以发动机测试中一项重要的特性测试项目——速度特性测试为目的，重点研究了交流电力测功机及其控制系统设计。
Aiming at the speed characteristics test, which is one of important test items of engine test, this paper proposes studies of ac electrical dynamometer and its control system.
提出并设计了一种有机电致发光显示器交流电压驱动电路，在验证此电路性能的同时也对有机电致发光显示器在交流驱动下的特性进行了测试。
The relevant test and research show that the AC-driving circuit functions excellently, realizing AC driving and restraining the cross talk, and the lifetime of OLED can be improved greatly.
并且分析了各种交流电机pch系统模型的特性，包括：能量平衡特性，耗散特性，无源特性等等。
We analyzed the characteristics of the PCH model of ac machine. These included: energy balance, dissipation, passivity etc.
介绍了用于电压继电器动作特性测试的可程控交流电源。
A programmable power supply which tests action characteristic of voltage relay is presented.
交流变频调速系统是利用异步交流电动机的同步转速随频率变化的特性，通过改变电机的供电频率而进行调速。
Because the AC asynchronous motor 'synchronous speed is determined by the frequency, we can control the AC asynchronous motor' speed by changing the supply power's frequency.
研究了涂覆在铁板上的纯高聚物涂层在质量分数为0．03的氯化钠水溶液中的交流电容、电阻特性，以及与涂层耐蚀性的关系。
Alternating current impedance and corrosion resistance of polymer coatings on sheet iron have been investigated in aqueous solution of NaCl with mass ratio of 0. 03.
在分析交流电机工作特性的基础上，阐述了电网谐波对电机的危害。
On the basis of analysis of operation performance of AC motor, the harm of harmonic wave of electric net work to electric motor is summarized in the paper.
介绍一种按照实际交流电弧的特性设计的三相交流电弧炉仿真试验系统，针对电弧炉电极升降控制提出了一种基于DSP的控制方案。
This paper introduces a simulation experimental system of 3-phase ac arc furnace, developing a DSP based electric-arc furnace electric pole fluctuation control system.
介绍一种按照实际交流电弧的特性设计的三相交流电弧炉仿真试验系统，针对电弧炉电极升降控制提出了一种基于DSP的控制方案。
This paper introduces a simulation experimental system of 3-phase ac arc furnace, developing a DSP based electric-arc furnace electric pole fluctuation control system.
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