基于FPGA的模糊自整定PID控制器的研究

提出了一种基于VHDL描述、FPGA实现的模糊自整定PID控制器设计方法。首先，借助Matlab系统仿真工具，优化得出模糊自整定PID参数的模糊推理规则和控制器算法结构。然后，进行控制器的VHDL分层设汁，作为单一控制器芯片，重点编程实现和时序仿真：模糊逻辑推理、模糊自整定PID算法、数据缓存和I／O接口控制。最后，在一个具体的FPGA芯片上实现该控制器，并在此基础上进行系统实验。实验结果表明：FPGA作为单一控制器实现模糊自整定PID控制编程规范、时序验证方便、系统修改灵活，且基本无须改动硬件，是实现单片或小系统智能控制策略的一种新的有效途径。

The Study of Fuzzy Self-tuning PID Controller Based on FPGA

A design method of fuzzy self-tuning PID controller based on VHDL and FPGAs is proposed. At first, with the simulator of MATLAB the fuzzy inference rules of fuzzy self-tuning PID controller and the algorithm architecture of the controller are optimized. Then, the VHDL hierarchal design of the controller is carried out. As a single controller chip, the research keys are fuzzy logic Inference, fuzzy self-tuning PID algorithm, data cache and I/O interface control. The last, the controller is implemented in the FPGA. The experiment results indicate that FPGA implementation of single controller chip on fuzzy self-tuning PID control has many advantages, program is criterion, timing test is facility, system modification is agility and need not be changed the hardware on the whole. It is a new and efficient method to implement intelligent control strategy based on single chip or small system.