Design And Implementation Of Airship Attitude Control System Based On DSP

As a traditional aircraft,the airship develops earlier than airplan.During the development of aircraft,it has experienced the period brilliant and decline.In the 70s and 80s of last century,as a flight platform of communication relay,remote warning,high precision of earth observation,environmental monitoring,disaster monitoring and rescue tasks the airship has gradually been recognized in the world.Thus,the development of airship entering the fast track again.In the development process of stratospheric airship,there are a number of key technologies need to figure,such as the research of the capsule material,the improvement of power propulsion technology,the breakthrough of energy technology and the design of autonomous flight control system.Based on the specialty knowledge,access to relevant information published at home and abroad combining the relevant knowledge which I got in the company as a trainee,the paper has a preliminary study for the design of autonomous flight control of the airship attitude control system.The main idea of this research is as follows.1.Firstly,with the method of mechanism analysis getting the force analysis of Stratospheric Airship in detail,according to the theory of mechanics principles,analyze the geometric relationship between the various airship motion parameters,get a six-degree nonlinear motional equation of the airship,use the small disturbance linearization method to deal with the motion equations of the airship under certain conditions,finally,decoupling for longitudinal and transverse two equations to study.2.Further more,the hardware circuit design and software design of the Stratospheric airship attitude control circuit board are studied.Using DSP control chip to control the airship attitude control valve and air blower,when the airship is rising,or falling stage,adjusting airship ballonet blower or the valve before and after to make it look up or look down,so as to realize the airship rise and fall.3.Finally,this paper employs the idea of satisfactory control,studies the airship attitude control system,and researches the pole sector expected index system,the steady-state output variance and controller design problems in dynamic error coefficient constraints.The airship attitude control is divided into the control of position and height,adopting the method of satisfactory PID control,respectively located in the airship attitude control point control and design the control law of high control,and calculate the corresponding parameters were simulated using the MATLAB simulation software in LMI toolbox.