A Multi-barrel Rocket Launchers Aiming Control System Design And Research

To meet the requestment of fast tracking, high precision aiming of Multiple rocket launcher, both hardware and software of aiming control system are designed, as well as the control algorithm. The construction of using master computer and slaver computer are adopted in the designing, within which the master computer is utilized for commanding and dispatching, information processing and human-computer interactive, and the slaver computer is utilized for position collecting and algorithm processing.Considering the characteristics such as varied inertia moment and load moment, and impact moment of burning gas flow are both go against the controlling of rocket launch, a higher request is proposed for the control performance of ac servo system in the rocket. Traditional PID control has favorable control performance with accurate model, but model parameter variations lead to poor robust. PID can not meet the requirements of high precision in the ac position servo system. Sliding mode control is an efficient approach because of its strong robustness against disturbances and variation of parameters. However, its application and development are limited by chattering problem of its output. To keep strong robustness and eliminate chattering, fuzzy control is integrated into sliding mode control, and the fuzzy sliding mode controller is applied in position loop of ac servo system in the multiple launch rocket system. The sliding mode controller is designed based on equivalent control and switching control, where switching control is used to compensate system uncertainty and external disturbance. Gain of switching control is adjusted by fuzzy, and dynamic saturation function is also used to reduce the control chattering.Simulations about different circumstances and different reference signal are done, results show that the fuzzy sliding mode control has better robustness to parameter perturbation and external interference than PID control dose, meanwhile the chattering problem of traditional sliding mode is eliminated. Experiments show that the system has good response speed and tracking accuracy when the control strategy is adopted, and meet the system design requirements.