CAJ | 학술논문

制冷系统的系统原理复杂，难以利用机理分析法推导出准确的系统模型。提出一种基于分段阶跃响应法的系统传递函数辨识方法，对某脉管制冷系统进行分段阶跃响应试验，利用Matlab对试验数据进行处理，辨识出系统的分段传递函数。传函表明随着焦面温度的降低，系统的稳态增益呈减小趋势，与理论推导相吻合，印证了方法的有效性，获取模型为后续制冷系统的控制算法的设计奠定了基础。
제랭계통적계통원리복잡，난이이용궤리분석법추도출준학적계통모형。제출일충기우분단계약향응법적계통전체함수변식방법，대모맥관제랭계통진행분단계약향응시험，이용Matlab대시험수거진행처리，변식출계통적분단전체함수。전함표명수착초면온도적강저，계통적은태증익정감소추세，여이론추도상문합，인증료방법적유효성，획취모형위후속제랭계통적공제산법적설계전정료기출。
System identification of refrigerating system is hard to realize by mechanism analysis because of the com-plexity of system. This paper proposes a method based on partition step-response to get the transfer function of a refrigerat-ing system. According to an experiment,the transfer function we get indicates that as the temperature of the FPA grows, the steady-state gain of the system decreases which verifies the theoretical derivation. It has set up a foundation for the de-velopment of the system control algorithm.