基于ARM的模糊PID直流电机控制系统

直流电机具有调速范围广、调速性能平稳光滑、启动转矩较大、易于起停车等优点，特别适合用在调速要求比较高的场合。传统 PID 直流调速控制在工况变化情况下需要调整参数，过程复杂且难以自适应，针对这个问题，设计了一个模糊PID直流调速控制系统，首先分析了直流电机工作特性，构建了PID参数调节的模糊规则表，进行了理论分析和仿真；在此基础上，设计实现了一模糊 PID 直流调速控制系统，实现了对直流电机转速的自适应控制与显示。系统包含上位机程序和下位控制器两部分，其中上位机程序采用Visual Basic编写，用于设置PID参数、通信端口、转速显示等；下位控制器采用ARM S3C2440作为核心控制单元，包括IGBT驱动部分、H桥可逆电路、通信电路、电源电路、转速反馈电路等。仿真和实际实验显示该系统不仅提高了自适应性，而且大大提高了调速快速性和准确性。此外，该系统结构模块化，易于推广，可用于实际调速场合和教育培训实验台，具有一定理论价值和实际意义。

ARM-Based Fuzzy PID DC Motor Control System

DC motor has a wide speed range, steady and smooth speed performance. The starting torque is large, easy-to-play parking, etc., especially suitable for use in high speed requirements of the occasion. Traditional PID DC speed control changes in working conditions need to adjust the parameters of the adaptive process is complex and difficult. The paper addresses this issue. This paper analyzes the operating characteristics of the DC motor constructed fuzzy rule table PID parameter adjustment, the theoretical analysis and simulation. On this basis, we design and implement a fuzzy PID DC speed control system for DC motor speed to control and display self-adaptivly. We design a fuzzy PID DC speed control system. The system consists of two parts and lower PC program controller, which uses the host computer program written in Visual Basic, is used to set the PID parameters, communication ports, speed display; lower controller uses ARM S3C2440 as the core control unit, including the IGBT drive section, H-bridge reversible circuits, communications circuits, power, speed feedback circuit. Simulation and practical experiments show that the system not only improves the adaptability, but also improves the speed and accuracy quickly. In addition, the modular system structure, easy to spread, can be used for the actual speed of occasions and education and training bench, has some theoretical and practical significance.