大功率LED模糊自适应PID调光控制系统设计

摘要

在能源紧张的今天,LED得到了广泛应用,大功率LED自适应调光也显得尤为重要。本文设计了一种大功率LED模糊自适应调光控制系统。先建立了被控对象大功率LED的数学模型,再利用模糊PID的建立控制规则,设计出模糊自适应调光PID控制器,并建立仿真模型。仿真结果表明与常规PID控制系统对比,模糊PID控制的自适应大功率LED调光系统具有响应速度快、控制精度高等优点,在自动调光场合中,具有一定的实用价值。%LED becomes popular under the present energy scarce environment. Automatic dimming of high-power LED is becoming increasingly important. In the research, a high-power LED dimming control system based on fuzzy self-adaptive PID is designed. Its mathematical model is developed firstly. Then fuzzy self-adaptive PID controller is established based on its control rule. Simulation results show that compared with conventional PID controller it is fast response and high control precision. It has practical value in automatic dimming situations.