What′s more, according to the method of little disturbance, the simplified model of pitching and rolling plane is derived, so preliminarily combined control system can be designed.

同时采用小扰动法推导了俯仰通道和滚动通道的简化模型，为空气动力和姿控发动机推力复合控制系统进行初步设计提供了依据。

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Aiming at the pitching movement model, a nonlinear variable structure controller with an optimal sliding surface for the pitching control system of missile was presented.

针对俯仰运动模型，提出利用非线性最优滑模控制来设计某型导弹的俯仰运动控制系统。

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By using a microcontroller to control the step time of two stepper motors, sinusoidal motions of heaving and pitching in phase for the experimental model are obtained.

由单片机控制步进电机的步进时间，实现了实验模型按正弦规律同步地平动和转动。

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Fans can bid on hundreds of items in an online auction, including attending a NASCAR race with WWE superstar John Cena, meeting Tyra Banks on the set of "America's Next Top Model, " or pitching entrepreneurial ideas to Mark Cuban.

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Pitching effectively means not only conveying enthusiasm, a clear business model and value proposition, but it also means showing you are coachable and committed to your venture.

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