汽车双闭环直流风扇调速系统设计及应用  

Design and Application of Vehicle Double-closed Loop D.C.Fan Speed Control System

作　　者：吴成加 赵圣宝[1] Wu Chengjia Zhao Shengbao(Anhui Ankai Automobile Co., Ltd, Hefei 230051, China)

机构地区：[1]安徽安凯汽车股份有限公司,合肥230051

出　　处：《客车技术与研究》2016年第6期33-35,61,共4页Bus & Coach Technology and Research

摘　　要：介绍一种汽车双闭环直流风扇调速系统,由微处理器产生PWM信号来实现直流风扇速度调节,通过改变PWM脉冲的频率和占空比,实现电流和温度双闭环水冷系统无级调速;并通过过载保护设计,确保电路安全,延长汽车风扇的使用寿命,从而增强散热效果和提高能量的利用率。The authors introduce a double-closed loop D.C. fan speed control system, which the PWM signal is generated by the microprocessor to implement the D.C. fan speed regulation, by changing the frequency and duty ratio of PWM pulse, the temperature and current double-closed loop water cooling system stepless speed regulation is realized. Through the design of overload protection, they ensure the circuit safety, prolong the service life of the vehicle fan, and thereby enhance the cooling effect and improve the utilization rate of the energy.

关 键 词：汽车直流风扇 PWM信号 双闭环控制 调速系统 

分 类 号：U463.838[机械工程—车辆工程]