Abstract
Multiple Launch Rocket System (MLRS) has been widely used in recent years; vibration control in launching process is an effective way to improve its dispersion characteristics. In this paper, a novel vibration control system applying Annularly Arranged Thrusters (AAT) for MLRS in launching process is introduced and the prototype of the proposed system is built. The dynamic model of the MLRS with the AAT is established based on the Transfer Matrix Method for Multibody Systems (MSTMM). The LQR-PID control law and the management for the AAT are presented. The simulation and experiment of the proposed system are carried out and analyzed. The results show that the vibration of MLRS is effectively attenuated by the proposed control system. The study in this paper provides a new idea to improve the dispersion characteristic by reducing the vibration of MLRS in launching process.
Highlights
Multiple Launch Rocket System (MLRS) has been widely used all around the world due to the advantages such as high firing speed, large firing area, long firing range, good mobility, and heavy firepower density weaved in a short period of time
Dispersion characteristic is one of the important factors affecting its development [1]. e MLRS produces vibration in launching process because of the jet force of the last rocket and the contact force between the rocket pilot pin and the launch tube helical groove. is vibration will change the attitude of MLRS, while the rockets are moving in the launch tubes, affecting the initial disturbance of the rockets, and influencing the dispersion characteristics [2]
3.1. e Dynamic Model of the MLRS. e MLRS is mainly composed of the rear mechanical jacks and the wheels, the vehicle chassis, the azimuth part, the elevation part, launch tubes, and the Arranged rusters (AAT). rusters act only on the elevation part
Summary
Multiple Launch Rocket System (MLRS) has been widely used all around the world due to the advantages such as high firing speed, large firing area, long firing range, good mobility, and heavy firepower density weaved in a short period of time. Is vibration will change the attitude of MLRS, while the rockets are moving in the launch tubes, affecting the initial disturbance of the rockets, and influencing the dispersion characteristics [2]. The fast-reacted actuator and the accurate model are important issues to be considered in the vibration control of MLRS in launching process. E thruster is a device that converts the gas generated by the combusting charge to the output force through the nozzle It has advantages such as fast response speed, large output force, and easy to control and has been widely used in missile guidance, spacecraft attitude control, satellite vibration control, and projectile attitude correction. Applying the thrusters as actuators and modeling through the MSTMM are meaningful to the vibration control of MLRS in the short launching process.
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