摘要
针对常用相位差法测量电感时输入端和输出端电压的相位差存在抖动的问题,提出了通过电路互锁原理以消除抖动的相位差测量电路。该电路利用D触发器,相位差只被输出一次;由于选用10M晶振,相位差的计时单位达0.1μs;并使测量电感的直流内阻变得简单。根据此原理,选用80C552构成了单片机测量系统,实现了内阻测量方式和相位差测量方式的切换,并具有与上位机的串行通讯功能。该系统适用于电磁铁产品的综合测试。
Aiming at the fluctuation problem of phase-difference between input and output end voltage when inductance was detected with common phase-difference method, a phase-difference measuring circuit that can eliminate the fluctuation by the principle of circuit inter-lockup was presented in this paper. By means of D-triggers, phase difference is sent only once, and by the use of 10MHz crystal, the time measuring precision can be 0.1μs, the measuring d-c internal resistance in inductance is also simplified. According to this principle, 80C552 microchip processor is adopted in the testing system. Thus, the switching from mode of internal resistance measuring to inductance measuring was implemented, and the serial communication with superior controller is also realized. This system is applicable to test of electromagnetic products.
出处
《兵工自动化》
2002年第5期52-54,共3页
Ordnance Industry Automation
