基于可变控制参数的PID算法的电子膨胀阀控制方法  

Control method of electronic expansion valve using PID algorithm based on variable control parameters

作　　者：王飞 许文明 张心怡 罗荣邦 袁俊军 丁爽 崔文娟 李阳 Wang Fei;Xu Wenming;Zhang Xinyi;Luo Rongbang;Yuan Junjun;Ding Shuang;Cui Wenjuan;Li Yang(Qingdao Haier Air Conditioner Gen.Corp.)

机构地区：[1]青岛海尔空调器有限总公司

出　　处：《制冷与空调》2021年第6期95-97,共3页Refrigeration and Air-Conditioning

摘　　要：将基于可变控制参数的PID算法应用于变频空调器电子膨胀阀的控制,分别测试控制参数固定及可变的两种控制方法,结果表明:采用固定控制参数的PID算法时,压缩机低频运行时排气温度波动大,不利于系统稳定;采用基于可变控制参数的PID算法时,电子膨胀阀调节响应迅速,遇到扰动后的稳定性更好,在低频区优势明显。The PID algorithm based on variable control parameters is applied to the control of the electronic expansion valve in the frequency conversion air conditioner,and the control methods with fixed or variable control parameters are tested.The results show that using the PID algorithm based on fixed control parameters,the exhaust temperature of compressor operating under low frequency fluctuates sharply,which makes the system unstable.Using the PID algorithm based on variable control parameters,the regulation of electronic expansion valve responds quickly,and it has better stability after turbulence,especially in low frequency range.

关 键 词：变频空调器 电子膨胀阀 PID算法 可变控制参数 

分 类 号：TB6[一般工业技术—制冷工程]