CAJ | 학술논문

本文分别采用PID控制和模糊控制两种方法对跨临界CO2热泵系统的电子膨胀阀进行控制，控制过程均通过将蒸发器过热度作为被控量来控制阀门开度的方法来实现对R系列的电子膨胀阀进行控制。通过使用Simulink建立PID控制和模糊控制的模型并进行模拟，并对这两种控制方法进行对比，可以看出使用模糊控制方法时蒸发器的过热度响应时间更快，且过热度在控制过程中变化更为平稳，因此得出模糊控制方法更加适用于对跨临界CO2热泵这种具有强烈非线性特性的系统进行控制的结论。
본문분별채용PID공제화모호공제량충방법대과림계CO2열빙계통적전자팽창벌진행공제，공제과정균통과장증발기과열도작위피공량래공제벌문개도적방법래실현대R계렬적전자팽창벌진행공제。통과사용Simulink건립PID공제화모호공제적모형병진행모의，병대저량충공제방법진행대비，가이간출사용모호공제방법시증발기적과열도향응시간경쾌，차과열도재공제과정중변화경위평은，인차득출모호공제방법경가괄용우대과림계CO2열빙저충구유강렬비선성특성적계통진행공제적결론。
There are two methods to control the electronic expansion valve of transcritical CO2 heat pump system which are PID control and fuzzy control. In these control methods, control process are both superheat controlling, which is used as control factor to control valve lift. The electronic expansion valve uses R series electronic expansion valve. Use Simulink to establish a PID control and a fuzzy control model and simulate, then compare the two types of control process, and then it can be seen that when using fuzzy control method to control evaporator superheat which is faster than PID control in responsitive time, and the degree of overheat control process changes more smoothly. It has a conclusion that fuzzy control method is more applicable for transcritical COz heat pump control system which has a strong nonlinear characteristics.