利用车辆运动学模型，应用最优控制理论，对拖拉机自动引导行走方法进行了研究。
An automatic guidance method for tractor was developed based on a vehicle kinematical model and the optimal control theory.
利用概率分析和随机模型的密度演化方法，导出了系统的一些新的可靠性指标和最优检测策略。
The new system reliability indices and the optimal inspection policy are obtained by using probability analysis and the density evolution method in stochastic.
通过优化系统的最优利用率并考虑系统各机器的工作平衡，本文给出了载荷问题三个新的优化模型。
Based on Kusiak's idea, three new models of loading problem with the aim to optimize the utilization ratio ot machines and to balance jobs assigned to each machine are formulated.
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