响应面分析法优化洗梗水温合格率的应用研究

The application research on the qualification rate of the stem washing temperature by response surface methodology optimization

以洗梗水温的合格率为评价指标,通过单因素试验、运用响应面和绝对差值分析法,考察了液位计安装位置、液位计高低检测位置、补偿蒸汽阀门开启和关闭点对洗梗水温合格率的影响.结果表明:液位计的安装位置为34 cm,低位检测位置为28 cm,高位检测位置为38 cm时,洗梗水温合格率的最大预测值为94.996%.当水温<47.5℃时,补偿蒸汽阀门开度为100%;随着水温的增加逐渐减少补偿蒸汽阀门开度,当水温>52.5℃时,关闭补偿蒸汽阀门.经对液位检测程序和补偿蒸汽阀门开启和关闭程序优化,YSG-8AF型洗梗机PID控制程序实现了加水和增温的自动控制,洗梗水温合格率从79.85%提高到99.92%.

Through the single factor test,the response surface methodology and the absolute difference analysis method,the effect of the factors such as mounting position of the liquid level meter,the high and low level detection position of the liquid level meter,the compensation steam valve opening and closing point were investigated based on the comprehensive evaluation which were guided by the qualification rate of the stem washing temperature. The results showed that： When the mounting position of the liquid level meter was 34 cm,the low level detection position was 28 cm,the high level detection position was 38 cm,the maximal prediction value of the qualification rate of the stem washing temperature was 94. 996%. When the temperature was less than 47. 5 ℃,the opening of the compensation steam valve was 100%,which was gradually reduced with the increase of the water temperature; when the water temperature was more than52. 5 ℃,the opening of the compensation steam valve was closed. Through the program optimization of the liquid level detection,the compensation steam valve opening and closing point,the PID control program of the stem washing machine of YSG-8AF realized the automatic control of adding water and increasing temperature,the qualification rate of the stem washing temperature was increased from 79. 85% to 99. 92%.