针对当前城市交通系统中的被控对象具有较大的随机性和偶然性，引入了不需要建立精确数学模型的模糊控制。
This design USES fuzzy control theory which doesn't require exact mathematical model because of the randomness of the controlled objects in the current city traffic control system.
考虑到设计参数的随机性，给出了偏曲轴输入少齿差行星减速器设计的可靠性优化数学模型。
Considering the randomization of design parameters, a dependability optimization mathematics model is given for the planet reducer of a few tooth difference with biasing bent shaft.
模糊控制不需建立被控对象的精确数学模型，特别适用于具有较大随机性的城市交通控制。
It is not necessary for fuzzy control to built exact mathematic model about the controlled object, so fuzzy control is applicable especially to control urban traffic with great random characteristic.
因此，利用简单混沌数学模型迭代产生的信号具有随机性，其统计特性类似白噪声。
So the signal generated by iteration of simple chaos mathematical model get the feature of randomness and owns the statistical characteristics similar to white noise.
进行了随机数学模型的研究，考虑了模型的输入条件的随机性，从而对模型计算后的输出结果进行了不确定性和敏感性分析。
The stochastic-numerical model is carried on, the stochastic analysis is taken into account in the input and the uncertainty analysis and sensitivity analysis of the output are conducted.
由于短时交通流存在着较强的非线性和随机性，基于解析数学模型的传统方法已经不能胜任。
Due to the strong nonlinearity and randomicity, the traditional methods grounded on analytics model are not competent.
研究了考虑参数随机性的结构静动态特性稳健性优化设计问题的数学模型和数值求解。
The perturbation-based stochastic finite element analysis incorporating structural optimization techniques is employed in the structural robust design problem.
研究了考虑参数随机性的结构静动态特性稳健性优化设计问题的数学模型和数值求解。
The perturbation-based stochastic finite element analysis incorporating structural optimization techniques is employed in the structural robust design problem.
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