北航与慕尼黑工业大学 飞行器课件 讲解四轴飞行器的空气动力学模型，位姿控制PID -Northern Technical University of Munich and courseware to explain Quadcopter aircraft aerodynamic model, pose PID control

421智能PID仪表原理图,增长知识面。(421 intelligent PID instrument principle map, increase the knowledge surface.)