Control System Design Of Pitching-Rolling Motion And Research In Control Performance

The aircraft and related equipments are of high cost generally, and simulation analysis of its dynamic performance must be done before normal production. Therefore, a dedicated motion control equipment for testing aircraft model should be designed. For the above needs, in the thesis, a Pitching-Rolling motion control system was designed through the semi-physical simulation method. Meanwhile, the appropriate control algorithm was selected by analysing results of different control algorithms on the motion control platform, so as to achieve high control performance. Finally, the actual physical model of motion control system was manufactured, which proved the feasibility and correctness of the system design approach through semi-physical simulation model.During the motion control system design, a dynamic model in ADAMS software needed to be created. The dynamics model corresponds to the actual model. The motor torque, displacement, velocity, acceleration and other parameters were collected when the control system proceed motion simulation. After the calculation of these parameters, the motor and other components of the Pitching-Rolling motion control systems were chosen. Finally, the entire physical model of Pitching-Rolling control system was built.The control algorithm was chosen mainly through the Co-Simulation of MATLAB and ADAMS. The main course was as follow. Firstly, mathematical model of AC servo motors were built depending on the selected motor types. The PID controller and Sliding Mode Variable Structure Controller was also designed. These were all in the software of Simulink. Secondly, the corresponding interfaces of mathematical model in Simulink and physical model in ADAMS were docked. So the data of two models can exchange normally. Finally, the control performance of two control algorithms can be compared via analysing the parameters output by the system.By comparing the control performance of PID controller and Sliding Mode Variable Structure Controller, it indicates that Sliding Mode Variable Structure Control algorithm has some advantages over PID control algorithm in terms of transient response, control precision, following performance and anti-jamming capability.Meanwhile, it proves that the use of semi-physical simulation models for system design approach is realistic, which was verified by the actual physical model of Pitching-Rolling motion control system.