动态多模型指数平滑法融合的在线预测方法

针对传统预测算法实时性差、难以适应多种数据变化情况、参数无法根据数据的实时变化进行在线调整等问题,提出了一种动态多模型指数平滑法融合的在线预测算法。该算法根据历史数据的预测误差,动态调整指数平滑法的平滑系数,以及1次、2次、3次指数平滑法的融合权值,实时得到对传感器测量参数的准确预测。仿真表明,该算法在多种数据变化情况下均优于单一采用指数平滑法。

Method of online prediction based on fused by dynamic exponential smoothing of multi-model

To solve the problems of poor real-time for the traditional prediction algorithms, poor adaptability of the multiple data variations, and the parameters can't be adjusted online with real-time change in data, a method of real-time prediction based on fused by dynamic exponential smoothing of multi-model is proposed. In this algorithm, smoothing factors of exponential smoothing, fusion weights of single, quadratic and cubic exponential smoothing are adjusted dynamically based on the prediction error of historical data, and the sensors measuring parameters are real-time predicted accurately. The simulation shows that the algorithm is better than other exponential smoothing using independently in the case of multiple data variations.