The article demonstrates Ampere 's circulation theorem by Biot-Savart's law and vector analysis.

用毕奥—萨伐尔定律和矢量分析的方法证明了安培环路定理。

Using the optimal control theory an optimal control law of agile turn is proposed enabling to eliminate velocity component in vertical director of initial sight under thrust vector control.

应用最优控制理论，提出一种最佳快速转弯控制律，能在推力矢量控制下消除终端时刻垂直于初始视线方向上的速度分量。

The obtained optimal control law consists of analytical linear feedforward and feedback terms and a nonlinear compensation term which is the limit of the adjoint vector sequence.

得到的最优控制律由解析的线性前馈-反馈项和伴随向量序列极限形式的非线性补偿项组成。