柴油机SCR反应器性能FLS-SVM预测模型

江彤¹，左青松²，谢常清¹

(1. 湖南人文科技学院 计算机科学技术系，湖南 娄底，417000；
2. 湖南大学 机械与运载工程学院，湖南 长沙，410082)

摘 要：针对柴油机SCR反应器结构参数的模糊特性，将CFD仿真得到的不同结构参数下柴油机SCR反应器在温度为380 ℃时的性能仿真结果作为训练集，采用混沌量子遗传算法对模糊最小二乘支持向量机的参数进行优化，建立柴油机SCR反应器性能FLS-SVM预测模型。研究结果表明：柴油机SCR反应器性能预测模型的相对预测误差均小于3.0%，表明柴油机SCR反应器性能仿真结果与FLS-SVM预测模型的结果具有较高的准确精度。

关键词：混沌量子遗传算法；最小二乘支持向量机；柴油机；SCR反应器

FLS-SVM performance forecasting model of SCR reactor in diesel engine

JIANG Tong¹, ZUO Qing-song², XIE Chang-qing¹

(1. Department of Computer Science and Technology, Hunan Institute of Humanities,
Science and Technology, Loudi 417000, China;
2. College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, China)

Abstract:Due to the fuzzy speciality of structure parameters for SCR reactor of diesel engine, taking CFD simulation results for different diesel SCR reactor structural parameters at 380 ℃ as the training set，a new fuzzy least squares support vector machines model of prediction was established based on chaotic quantum-inspired genetic algorithm, in which the parameters of fuzzy least squares support vector machines was optimized by using chaos quantum genetic algorithm. The results show that the relative error of the prediction model is less than 3.0%，indicating that CFD simulation results and those of FLS-SVM prediction model have high accuracy and precision.

Key words:chaotic quantum-inspired genetic algorithm; least squares support vector machines; diesel; SCR reactor