基于忆阻器的可变电阻器建模

现有的各种固定电阻、可调电阻器(电阻箱)和数控可编程电阻器都有不足之处,不能满足科研等场所对制备时间、灵活性的要求。文章提出在数字电路中加入忆阻器并且通过控制施加电压的时间得到一种可变电阻器的设计模型。在Simulink平台上对基于忆阻器的可变电阻器建模并进行了验证,同时与传统数控可编程电阻器进行了比较。实验数据表明,基于忆阻器的可调电阻器模型在灵活性、阻值连续性、阻值精度等方面与数控可编程电阻器相比都有明显改善。

MCU控制的光伏电池测试仪设计

为了检测太阳能组件或组件阵列的各项性能参数,提出一种利用数控电阻测试光伏电池输出特性的方法。测试仪采用数控电阻器、高精度ADC和微控制器结合的方案,与传统的电子负载相比,具有便携、精度高、智能化和测量时间短等特点。利用制作的样机,在自然光照条件下进行了光伏电池测试实验,并在Matlab环境中对光伏电池模型进行了仿真验证。通过样机试验结果和仿真结果比较,结果表明测试仪具有较高的精度。

数字电位器AD8402/AD8403原理及应用

介绍数字电位器AD8402/AD8403的工作原理、基本特点及典型应用.数字电位器不仅可以取代机械电位器,而且具有无噪声、抗震动、尺寸小、寿命长等优点.它的最大特点是具有可编程能力,随着制造成本的降低,其应用范围会越来越广.

Genetic-fuzzy HEV control strategy based on driving cycle recognition

A genetic-fuzzy HEV control strategy based on driving cycle recognition （DCR） was built. Six driving cycles were selected to represent different traffic conditions e.g. freeway, urban, suburb. A neural algorithm was used for traffic condition recognition based on ten parameters of each driving cycle. The DCR was utilized for optimization of the HEV control parameters using a genetic-fuzzy approach. A fuzzy logic controller （FLC） was designed to be intelligent to manage the engine to work in the vicinity of its optimal condition. The fuzzy membership function parameters were optimized using the genetic algorithm （GA） for each driving cycle. The result is that the DCR_ fuzzy controller can reduce the fuel consumption by 1. 9%, higher than only CYC _ HWFET optimized fuzzy （0.2%） or CYC _ WVUSUB optimized fuzzy （0.7%）. The DCR_ fuzzy method can get the better result than only optimizing one cycle on the complex real traffic conditions.