低功耗模糊控制器的CMOS模拟电路实现  

Analog circuit on CMOS for low power fuzzy logic controller

作　　者：单伟伟[1] 王为之[1] 靳东明[1] 

机构地区：[1]清华大学微电子学研究所,清华信息科学与技术国家实验室(筹),北京100084

出　　处：《清华大学学报（自然科学版）》2008年第7期1198-1201,共4页Journal of Tsinghua University(Science and Technology)

摘　　要：为了解决软件实现的模糊控制器速度低的问题,研制了模拟电路实现的模糊控制器。设计了以下单元电路:结构精简的新型Z型、Gauss型和S型隶属度函数电路、电流模求小电路和一种不需要除法器的重心法去模糊电路。以此构造的两输入一输出9条规则的零阶TS模糊控制器已在无锡上华0.6μm CMOS工艺下制造。测试结果表明:在±2.5V的工作电压下精度为±3.5%,功耗仅为3.5mW,模糊推理的速度是0.67×106s-1。该控制器在功耗、精度和面积上有优势,可用于实时控制。An analog circuit implementation of a fuzzy logic controller was developed to improve the speed relative to the software implementation. Several functional blocks ware designed including compact-structured Z-shaped, Gaussian and S-shaped membership function circuits, a current minimization circuit and a COA（Center of Area） defuzzification circuit that do not use division. A 2-input 1-output zero-order T-S fuzzy logic controller with 9-rule was fabricated from circuits on CMOS 0. 6 μm technology. Tests with ± 2.5 V supply voltages show the controller had an accuracy of ± 3.5% with a power consumption of 3.5 mW, and speeds fuzzy logic inference per second of up to 0.67 × 10^6 s^-1. This fuzzy logic controller has improved power consumption, accuracy and area, and be can be used for real-time control problems.

关 键 词：模拟电路 模糊控制器 隶属度函数电路 

分 类 号：TN431.1[电子电信—微电子学与固体电子学]