PID gain predictive control based on two approximation model is proposed for the problems of the traditional PID control and predictive control.
提出一种基于二次逼近模型的PID增益预测控制，并阐述了该系统的结构、算法和应用特点。
The two methods of model simplification are presented for large scale systems, they are the least square approximation and the rational fraction approximation.
本文针对大系统的频域模型简化提出了两种方法：最小二乘近似法和有理分式近似法。
If the two preconditions are difficult to satisfy, the model error caused by the linear approximation will become difficult to control.
如果这两个前提难以满足，由线性化近似模型带来的模型误差将变得难以控制。
The time evolution of system in two photon Jaynes Cummings (J C) model without rotating waves approximation (RWA) is obtained by using the theory of ordinary differential equations.
采用常微分方程理论研究了无旋波近似下双光子J-C模型系统的时间演化。
It presented two different methods according to traffic state. For current or past state, data approximation can be adopt to get turn-left car trace model because traffic data can be got easily.
根据模拟的交通状态的时间性可分为两种情况，对现有交通状态，由于可采集到交通数据，采用数据拟合的方法获得轨迹模型；
The two key issues herein are the same approximation of the model and analysis of the sensitive parameters in model amendment.
主要研究了钢管焊接区建模及修正过程中的两个关键问题，即目标一致逼近模型的建立和模型修正的敏感参数分析。
The two key issues herein are the same approximation of the model and analysis of the sensitive parameters in model amendment.
主要研究了钢管焊接区建模及修正过程中的两个关键问题，即目标一致逼近模型的建立和模型修正的敏感参数分析。
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