| 1. | In order to design the autopilot for a rear controlled missile we must make a first estimate of the required aerodynamic derivatives .
为了设计尾部控制导弹的自动驾驶仪，我们必须首先估算一下所需要的气动力导数。 |
| 2. | Identification of aerodynamic derivatives of bridge deckes in turbulence flow
紊流风场中桥梁气动导数的识别 |
| 3. | On the sensitivity of aircraft longitudinal flying qualities to aerodynamic derivatives at high angle of attack
飞机纵向飞行品质对大迎角气动导数的敏感性研究 |
| 4. | Static coefficients are defined to describe the static effect of wind on bridge , and the aerodynamic derivatives are used to describe the aerodynamic effect
静力三分力系数用于描述风对桥梁的静力作用，气动导数是颤振和抖振分析方法的核心。 |
| 5. | Then the study algorithm is improved to enhance the identification result of the aerodynamic derivatives , and different bp anns are built to identify the static coefficients
然后改进了学习算法以识别桥梁模型的气动导数，并采用了不同的bp网络识别桥梁模型的静力三分力系数。 |
| 6. | It is shown that this approach is feasible and can be applied in actual bridge engineering . some experiments are done in the wind tunnel to acquire enough samples including static coefficients and aerodynamic derivatives
为了获得足够的样本数，在西南交通大学风工程试验中心进行了9个模型试验，得到了模型的静力三分力系数和一个气动导数值。 |
| 7. | The purpose of this thesis is to use artificial neural networks ( ann ) to identify the aerodynamic parameters . first introduced in this paper is the basic theory of ann and wind engineering in bridge , then ann is presented to identify the aerodynamic derivatives of ideal thin plate . a back - propagation ( bp ) ann is established and trained for many times to contrast the influences of some factors on the prediction results
首先对人工神经网络和桥梁风工程的基本理论作了简单的介绍，接着采用人工神经网络识别了理想薄平板的气动导数，并分析了数据处理方式、隐层单元数、训练次数、随机赋值次数、样本数量对训练结果的影响，讨论了训练的稳定性。 |
