侧滑-不协调的转弯导致较高的空速和大的下沉率。
SLIP - uncoordinated turn that results in high airspeed and sink rate.
文中通过研究无人机纵向航迹跟踪和横侧向协调转弯的控制律使得无人机可以以下确的姿态沿预定的航迹飞行。
The UAV can fly along the scheduled fight path with correct attitude by the research of the control law of portrait flight track and transverse coordinated turn.
以某型直升机为例，针对协调转弯侧滑过大问题，设计了最优控制与经典PID相结合的控制律结构。
Taking certain helicopter as example, the controller structure of linear-quadratic(LQ) optimal control and PID is designed to solve the sideslips of coordinated turns.
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