船用柴油机混合建模方法研究

鉴于单一的机理建模法和辨识建模法在船用柴油机建模领域都存在一定的不足，提出基于机理与网络辨识互补的船用柴油机混合建模方法。机理模型用来保证不同使用工况下的模型全局可信度，网络模型用来辨识系统中不可描述部分所带来的模型误差，二者通过互补形成混合模型。测试结果表明，采用混合建模方法可更好地反映船用柴油机的真实特性

Study on the Hybrid Modeling Method of Marine Diesel Engine

With consideration that models of marine diesel engines built with individual mechanism method and identification method are usually not so satisfied, a hybrid modeling method for marine diesel engines based on mutual compensation of mechanism model and network identification model is presented forward. The mechanism model is adopted to assure the overall reliability performance of the diesel model under different using modes, and the network identification model is used to identify the error of the model caused by indescribable factors of the system. The two types of models are compensated together to construct the hybrid diesel engine model. Testing results show that characteristics of marine diesel engines can be better described with the hybrid modeling method.