Control Design And Research Of Integral Transport Rocket Erection System

With the development of intelligent technology and industrial control technology,the precision of automatic control has been greatly improved.Rocket erection is a key part of the whole transport rocket.The erection control system is a core step of rocket launch.In the meanwhile,it requires very high requirements on the time and angle of rocket erection.The early rocket erection was manually operated and mechanically controlled.Hence it was difficult to improve the efficiency and accuracy.And the control design of the vertical system of the whole transport rocket is studied.What’s more,a set of trajectory planning system based on double motor drive is designed to solve the problems of slow vertical and low accuracy.Through the verification of technical means in the early stage,the control and erection of the whole transport rocket can meet the conditions of high precision and fast erection,and meet the accuracy requirements of space equipment.First of all,the requirements of overall rocket lifting and the shortcomings of existing rocket lifting technology are analyzed,and the design requirements of overall rocket lifting and lifting control are summarized.Secondly,according to the design requirements of the overall scheme design and hardware selection of the vertical system.Then the PLC control system is designed for the needs of the rocket in place,and the hardware selection and software design are completed.Then the HMI system is designed to meet the requirements of standardized management of local control and remote control of rocket erection.Next by comparing the vertical control strategy of single motor drive and double motor drive,an improved motor drive vertical control model is established,and the control strategy of double motor drive is determined.According to the speed planning and simulation curve of the vertical system,the overall vertical time of the rocket is shortened from 320 seconds to 308 seconds,and the vertical Angle error is controlled within the range of 90°±3’.It can completely realize the design requirements of the rocket as a whole.Finally,the trajectory planning and vertical speed smoothness experiment are completed.First using AMESIM rockets have been the overall planning and simulation,and on the vertical beginning,middle and end of the three-process simulation,and then with the help of a planned boundary parameters,Angle,time changes,the displacement and velocity,the shaft angular velocity and power system simulation,the results show that the rocket up set smoothly completed in different angles.The initial acceleration,deceleration stage change,stage change completion acceleration and terminal deceleration of the rocket are analyzed in the vertical ride test.It was found that the final low-speed approaching target Angle was less than the requirement of 1g acceleration.