In this paper, we consider the oscillatory properties of neutral linear variable functional differential equation with piecewise constant delays.

本文研究分段常数变量线性中立型泛函微分方程的振动性。

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Then the piecewise PID pitch-controlled algorithm and the control strategy for transition between variable speed constant frequency (VSCF) and pitch control were used in the test-bed.

在此试验台上对提出的分段PID变桨距控制算法以及变速恒频和变桨距切换设定的控制策略进行试验研究。

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