基于生产实践的喷气织机主喷嘴气压优选

Optimization of air-jet loom main nozzle air pressure based on production practice

为确定喷气织机喷嘴气压,以JAT 710喷气织机为例,采用最小二乘法确定了主喷嘴气压的计算公式。采集了512组织机的实际喷嘴气压配置数据,根据喷嘴气压配置理论,筛选出了76个合理的机台喷嘴气压配置方案,从理论和数据2个方面分析并推导了喷嘴气压确定公式。根据织物品种的织造数据,使用逐步回归法求解出喷嘴气压回归方程,结果表明:94.67%的拟合主喷嘴气压与实际主喷嘴气压的偏差能保持在±15%以内。使用18个合理的机台喷嘴气压配置对回归方程进行验证,所有的主喷嘴预测气压与实际主喷嘴气压的偏差能保持在±15%以内。证明该喷嘴气压回归方程能准确预测合理的喷嘴气压配置方案,提高实际生产效率。

To confirm the actual air pressures of the main nozzles and vice-nozzles for air jet loom, this paper developed an air pressure formula by using the least square method and taking JAT 710 air-jet loom as an example. Based on the allocation principle of the air-jet loom＇s nozzle air pressure, 76 reasonable pieces of statistics of its actual air pressure allocations were selected from 512 ones. According to the theoretic and data analysis, the formula of the nozzle air pressure was deduced. The stepwise regression method was applied to figure out the regression equation of the main nozzles＇ air pressure based on the weaving parameters of the woven fabrics. The deviations between the predicted and the actual air pressures of 94.67% main nozzles are within ±15%. Then another 18 allocations of reasonable nozzle air pressure are used to verify the regression equation. It turned out that their deviations are all within ±15%. The experimental results demonstrate that the regression equation can predict the allocation of nozzles air pressure reasonably and accurately so that productions efficiency is improved.