矿用通风机性能曲线图的函数化再现

摘要

以FBCZ-№9/18．5kW风机为例，对矿用通风机性能测定的特性曲线数据进行拟合；应用最小二乘法拟合风机在不同角度下风压与风量之间的关系式；利用1 stOpt中的公式自动搜索拟合得到风机风量、风压及叶片安装角度之间的关系式；通过MATLAB中的多元线性回归分析拟合风量、风压、角度和效率的线性关系式．通过上述研究可以获取不同叶片角度下近似的风机风压特性曲线，为矿井通风机性能测定提供基础数据支持．%Taking the FBCZ -№9/18.5kW fan as an example,this paper attempts to fit the curve data determined by the mine ventilator’s performance.It uses the least squares to fit the relation between the fan’s air pressure and the air volume at different angles.It also uses formulas of 1 stOpt to automatically search the fit and get the relation between the fan’s air volume,air pressure and blade installation angle.Through multiple linear regression analysis in MATLAB,it analyzes the linear equation of fitted air volume,air pressure,angle and efficiency.Through the above researches,we can obtain approximate wind pressure characteristic curves of the fan under different blade angles,which can provide basic data support for the mine ventilator performance measurement.