A closed - loop detecting approach of harmonic and reactive current based on instantaneous reactive power theory is proposed , its base design rules are given 摘要分析了基于瞬时无功功率理论的谐波及无功电流检测原理,在此基础上提出一种自适应闭环控制的检测系统,给出优化设计的基本原则。
It provided a in - depth discussion about the mechanism of tunneling effect as well as the i - v relation and the expression of tunneling current based on the model of metal - insulator - metal 对隧道效应理论进行了深入探讨,并以金属?绝缘层?金属结为模型,讨论了隧道效应中的i ? v关系以及针尖一样品间的隧道电流表达式。
The current based test method can be divided into two categories , the one is quiescent current test ( iddq testing ) and the other is transient current test ( iddt testing ) 为了降低测试成本并且提高集成电路的可靠性,电流测试应运而生。电流测试技术包括稳态电流测试( iddqtesting ) 、瞬态电流测试( iddttesting )两种方法。
The article studies several new methods to distinguishing between internal faults and inrush currents based on wavelet analysis , and gives two approach which can be adapted to practical application . in the end an advanced protection scheme is brought forward , which is based on 32 - bit mcu 并结合最新的32位mcu 、 dsp芯片及实时多任务操作系统,提出一套先进的保护方案,可达到快速鉴别涌流的日的,使变压器差动保护动作更加快速可靠。
In this thesis , assembler language was applied to program to realize dsp algorithm controller , which can perform such main computing as data collecting , self - adaptable distortion current detecting based on linear nerve cell , capacity voltage controlling in the side of direct current based on fuzzy control , pwm pulse width computing based on unsymmetrical rule sampling , etc . quick control speed ( one work period is 50 s ) and high accurateness feature largely in the controller 本文采用汇编语言编程实现了dsp算法控制器,它完成了数据采集、基于线性神经元的自适应畸变电流检测、基于模糊控制的直流侧电容电压控制、基于非对称规则采样的pwm脉宽计算等主要算法的运算。该控制器具有控制速度快(一个工作周期为50 ) ,精度高等特点。