Research on surface temperature compensation of rotary kiln based on inverse exponential model

Aiming at large measurement error of the kiln head in the process of measuring the temperature of the rotary kiln surface, this paper presents a high-precision temperature compensation algorithm for rotary kiln surface based on the inverse exponential model. The algorithm is implemented as follows: First of all, this paper chooses a series of points on the surface of the rotary kiln as monitoring points and calculates the difference between the actual temperature of the monitoring points and the temperature measured by infrared scanning thermometer (IST); Then a relation curve is plotted between the temperature differences and measuring distances; Finally the nonlinear model of inverse exponential function is established according to the curve trend. The experimental results show that the algorithm can obviously reduce the error of temperature measurement, and compared to the traditional method, the proposed method reduces the error of temperature measurement from 1.26% to 0.14%.