摘要
对传统键合图模型部分元件进行了非线性化改进,并建立了参数优化算法来根据样本的效率实验数据确定模型参数.以一种马达产品样本对象为例,改进后模型得出的工况效率分布图与实验图线对比结果明显优于传统模型;与试验数据对比误差分析证明,传统模型误差比例均值为3.55%,方差为0.005 298;改进后模型误差比例均值为1.18%,方差为0.000 487 5;改进后模型更适用于工况复杂设备的建模描述.
Improved nonlinear bond graph models and the parameter optimization algorithms are established.With these optimization algorithms,model parameters can be determined based on the experimental efficiency data of samples.Taking a motor product sample for example,the distribution chart of operating conditions efficiency of the improved model is much closer to the experimental results than that of the traditional model.Compared to sample experimental results,the mean value of percentage error for traditional model is 3.55% and for improved model is 1.18%,and the variance value of the improved model is much smaller than that of the traditional model.The error analysis proves that the improved model is much more suitable for description of device modeling in complex operating conditions.
出处
《同济大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2011年第8期1212-1215,1232,共5页
Journal of Tongji University:Natural Science
基金
"十一五"国家科技支撑计划(2007BAF10B00)
关键词
工程机械
液压泵
液压马达
键合图
非线性
construction machinery
hydraulic pumps
hydraulic motors
bond graph
nonlinear
