摘要
常规的模糊控制器主要通过计算机软件或单片机实现,但模糊控制器是一个高度并行的系统,实时性、自适应性要求较高,这种实现方式不能满足现代模糊控制器的设计要求。要解决这个问题必须从算法和器件结构入手。根据多值逻辑和PLA理论,提出了一种可演化的查表式模糊逻辑控制器。根据模糊逻辑控制器查询表的对称性和单调性特点,提出了一种查询表的简单生成算法。利用J门和PLA设计查询表硬件电路。以典型二阶系统模糊控制为例进行仿真实验,其结果表明了这个可演化的模糊逻辑控制器结构的可行性。
The most common implementation of Fuzzy Logic Controller （FLC） relies on software or mieroprocessors; however, FLC admits a high degree of parallelism system and high real-time, high self-adaptability. This way is not suitable to performance of design. There are two ways to solve this problem. One is to design EHW-oriented algorithms such as variable Genetic algorithm （GA） ; another way is to design new devices structure which meets the requirements of Evolvable Hardware （EHW）. A method about design of evolvable FLC based on multi-valued logic and PLA theory was proposed. A new generation algorithm was proposed according to symmetry and monotonous character of look-up table. Hardware circuit of lookup table was designed based on J doors and PLA. The performance of a fuzzy system in the control of a two-order system was evaluated. The results obtained show the applicability of this platform in the design of fuzzy control systems.
出处
《计算机科学》
CSCD
北大核心
2009年第3期170-172,219,共4页
Computer Science
基金
国家863计划(2007AA01Z290)
国家自然科学基金项目(60773009)资助
关键词
可编程模糊逻辑控制器
演化硬件
遗传算法
模糊逻辑
Programmable fuzzy logic controller,Evolvable hardware,Genetic algorithm,Fuzzy logic
