pitch angle control system can change pitch, accordingly regulate the rotational speed and output power by adjusting blade incidence of wind-driven device.
变桨距是通过改变风力机叶片桨距角来改变风力机的转速,从而调整发电机输出功率。
the longitudinal and lateral control laws of uavs' ground run are designed separately by using pitch angle control and driving front-wheel.