恒流源在各种电子设备中的应用越来越多,其性能的好坏直接影响着整个设备的性能表现。为了充分利用智能控制方法提高使恒流源的性能,提出一种基于模糊控制的恒流源。本设计方案采用三星公司ARM9 S3C2410高速嵌入式微处理器作为恒流源的控制、显示和输出电流检测核心,运用模糊控制算法实时控制,实现20mA到2000mA高精度恒流源。 Constant current source in a variety of electronic devices more and more applications, the performance of a direct impact on the performance of the entire device. In order to make full use of intelligent control method to improve the performance of constant current source, a constant current source based on fuzzy control is proposed. The design uses Samsung ARM9 S3C2410 high-speed embedded microprocessor as a constant current source control, display and output current detection core, the use of fuzzy control algorithm real-time control, high precision 20mA to 2000mA current source.