One For The Vibration Control Machine

Ammunition feed machine is one of the key components of gun’s fully automatic feeding system. The transmission reliability and positioning accuracy to a certain extent affect the accuracy of launch. With the continuous improvement of artillery firing rate, the speed of the components of the ammunition feed machine is increasing, and the method of treating it as rigid body traditionally has been far from satisfying. Consider the flexibility of the important parts of the ammunition feed machine, controlling the vibration simply and reliably, eliminating and suppressing the vibration of flexible structure, to improve gun’s precision and life, is still a major theoretical practical issues of gun’s ammunition feed machine designing.Ammunition feed machine is one of the key components of gun’s fully automatic feeding system. The transmission reliability and positioning accuracy to a certain extent affect the accuracy of launch. With the continuous improvement of artillery firing rate, the speed of the components of the ammunition feed machine is increasing, and the method of treating it as rigid body traditionally has been far from satisfying. Consider the flexibility of the important parts of the ammunition feed machine, controlling the vibration simply and reliably, eliminating and suppressing the vibration of flexible structure, and improving the precision and life, is still a major theoretical practical issues of gun.This paper takes flexible ammunition feed machine as researching object, the flexibility of some important parts is considered, taking dynamics simulation analysis on rigid-flexible coupling model. Using different control algorithms to control the switch action for the machine, the ADAMS/Control module and MATLAB/Simulink co-simulation is used to get the vibration responses analysis and comparison. The main works are:1. Based on the theory of elastic modeling and rigid-flexible coupling method, the dynamic model of an ammunition feed mechanism making the movement of ammunition dropping, with-load rotation, feed, no-load rotation is established, and the dynamic responses of the system are obtained in different ammunition dropping height and feed velocity. With this result, the vibration responses regularity of ammunition feed mechanism at different firing angles are obtained. The results can be used for design reference of ammunition feed mechanism system.2. PID control and incomplete derivative PID control algorithms are applied to make ADAMS and MATLAB/Simulink co-simulation analysis on rigid-flexible coupling dynamics model. The vibration responses are compared. Results show that the incomplete derivative PID control algorithm can reduce vibration response, and suppress damping time efficiently.3. Fuzzy-PID control method is applied to make co-simulation of the machine. Results show that Fuzzy-PID control method can suppress the vibration of the system efficiently. At the same time, the most influencing coefficient is parameterized and compared, coefficient with large or small values will lead to bad control performance.4. SMC based on the proportional switching function and Fuzzy-SMC algorithms are applied to make ADAMS and MATLAB/Simulink co-simulation analysis on rigid-flexible coupling dynamics model. The vibration responses show that Fuzzy-SMC control algorithm can reduce chattering problem of traditional SMC algorithm based on the proportional switching function, and reduce the vibration amplitude of the with-load rotation movement of the ammunition feed machine evidently.5. Compared with other control algorithms, Fuzzy-SMC algorithm can reduce the vibration amplitude of the with-load rotation movement of the ammunition feed machine evidently, and is the best controller for flexible coupling ammunition feed machine.