提出了基于卡尔曼滤波器的储罐液位监控方法，通过卡尔曼滤波器估计储罐的真实液位，再对其进行监测与控制。采用ST语言实现卡尔曼滤波算法，并将其应用在Rockwell PLC平台上，现场测试结果表明：卡尔曼滤波能很好地滤除储罐运行时产生的各类噪声，在判断储罐液位趋势及提高液位控制精度等方面都收到了较为理想的效果。%Based on Kalman filter , a tank level monitoring and control method was proposed to estimate the real tank level before having it controlled .Programming Kalman filter algorithm in ST language and applying it to Rockwell PLC platform show that Kalman filter can effectively filter out all the noise during the tank opera-tion, and it has ideal effect in judging level trend and improving the accuracy of tank level control .
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