Active Side-stick Control System For Aeroplane

With the development of aircraft technology, people raised higher and higher demands about operation quality of aircraft, and so it is very important to improve the quality of Aircraft stick. Active side-stick technology plays a very important role and becomes one of the research focuses. The control system of active side-stick based on mechanism is studied in the dissertation. Research on total structure and control load are the core of active side-stick.In view of the shortcoming of passive side-stick, the active side-stick based on method of torque motor actuator is raised, which can work according to needed character. The results showed that the system had not only very small error but also a good dynamic scouting character. And also, it has realized automatic flight and switch between active mode and passive mode.Firstly, total structure of active side-stick control system is discussed, including PC104 controller, torque motor diver, information gathering. It analyses overall program and workflow, and so accomplishes control frame. Control loop is used to control the stick force, with improved dual mode control algorithm, in view of the dynamic and static situation. It can adjust control volt, reduce error, trace stick move, and then realize accurate force control.After that, the active side-stick system can receive character data at any time when monitoring computer runs the sending program. The force character changes smoothly and the system works to the new character at once when received. Besides main mode, many problems are solved such as passive mode, automatic flight and so on. Back to zero-point position is also been researched detailed with the result of high precision and smooth character. Protocol is designed and communication between active side-stick and monitoring is realized. Finally, fault detection module is designed using industry computer and some data acquisition board to make sure active side-stick system work steadily.The active side-stick, which has high precision and perfect function, has been accepted by expert panel. The results of practical running showed that the system is feasible and has good performance, which lays a good foundation for future study.