介绍了一种基于双余度混合式步进电动机的双自由度卫星天线运动控制系统。
This paper introduces a double freedom degree motion control system of satellites antenna based on dual-redundancy hybrid stepping motor.
利用有限元离散变分不等原理和基于线性规划余原理的迭代方法，求解自由边值条件下的油膜力。
The oil film forces under free boundary conditions are solved by finite element discrete variational inequalities and iterative method based on complementary principle in linear programming.
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