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当前,国内外已开始采用科数字电子计算机控制制冷生产过程,制冷过程数学模型的研究也随之日趋重要。本文试图说明如何利用测试法获得输入和输出信号的离散数据,将控制对象近似为具有纯滞后的一阶环节或二阶环节,应用动态数学模型的最小二乘法对模型参数进行估算,从而建立制冷过程的动态数学模型。
At present, the domestic and foreign countries have started to adopt the digital electronic computer to control the refrigeration production process, and the mathematic model of the refrigeration process has become increasingly important. This paper attempts to illustrate how to use the test method to obtain discrete data of the input and output signals, the control object is approximated as a first-order link or a second-order link with a pure hysteresis, the model parameters are estimated using a least square method of a dynamic mathematical model to establish refrigeration Dynamic mathematical model of process.