本文提出了一种新的参数平面法，设计了某型歼击机的控制增稳系统，并取得了满意的结果。

In this paper a new parameter plane method is proposed and is used to design the stability augmentation control system of a certain type of aircraft and satisfactory results are obtained.

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首先介绍了鲁棒系统设计的参数平面法，然后采用该方法对某支线客机的侧向稳定系统进行了鲁棒设计。

At first, this paper introduces the parameter space design of robust control systems. A robust design of lateral-directional stability system for a aircraft is then finished in the method.

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当然也有另一种方法，就是用参数方程表示这两条直线，用两条直线的方向向量作外积，从而得到切平面的法向量。

Another way to do it, of course, would provide actually parametric equations of these lines, get vectors along them and then take the cross-product to get the normal vector to the plane.

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