A nonlinear dynamic mathematical model for describing the transient processes of working conditions has been established according to the fault characteristics in a liquid rocket engine.
针对发动机的故障特点，提出了其工作状态过渡的非线性动态数学模型。
Simulation results based on ideal mathematical model and industrial model show that the PID Elman network is prior to the modified Elman network in identification of nonlinear dynamic systems.
无论是理想的数学模型还是实际工业模型，计算机仿真结果均证明，将P ID型网络用于动态系统辨识具有更好的逼近效果。
Through a rational derivation, nonlinear mathematical model of electro-hydraulic position control system is built up. The system dynamic and stability analysis is obtained with the use of the model.
通过合理的推导，建立了电液伺服位置控制系统的非线性数学模型，利用该模型对系统进行相关的动态和稳定性分析。
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