基于80C196KC单片机的智能型开关电源研制

Development of Intelligent Switching Power Supply Based on the Single-Chip Microprocessor 80C196KC

针对传统PID控制算法无法实时自适应开关电源负载扰动和非线性特性的不足,提出了基于模糊逻辑的单片机80C196KC的智能控制策略,将单片机的测控技术和开关电源的脉冲宽度调制(PWM)技术相结合,采用先进的模糊控制算法实现电压调节。仿真结果表明,与传统PID控制算法的效果相比,模糊控制动态响应快、超调量小、具有较好的适应性和应用价值。

To overcome the shortcoming of the conventionally PID controller in the switching power supply, which can not be adaptive to the unknown load disturber and the non-linear feature, a novel intelligent control method based upon the fuzzy logic theory and single-chip microprocessor 80C196KC was presented in this paper. It associated the pulse width modulation （PWM） thought of the switching power supply with the detection and control technique of the single-chip microprocessor, regulated the output voltage with the advanced fuzzy control arithmetic. The results of digital simulation experiment demonstrated that the fuzzy control strategy has a lot of ideal performance, such as fast transient response, small overshoot, good adaptability and high application value, compared to the traditional PID controller.