Control Strategy And Implementation Of High Speed Rotation Correction Mechanism

Taking the rotating correction projectile as the research background,the control strategy of the high-speed rotation correction mechanism and the software and hardware design of the control system were studied for the requirements of the control part.The performance of the experimental prototype was tested by setting up the horizontal experimental turntable.This paper introduces the background and significance of the research,as well as the relevant research development at home and abroad.According to the two-dimensional ballistic correction principle and the duck rudder control principle,the overall control scheme of the fixed rudder as the ballistic correction actuator is determined.The structure layout of the control system is described,and the module design and control ideas of the control department are expounded.According to the overall control scheme of the design,the control strategy of the key points such as geomagnetic solution rolling angle and duck rudder control is studied.Combined with the characteristics of least squares and mean filtering,an improved filtering method for geomagnetic signals is designed.Simplifying the geomagnetic attitude measurement algorithm,a method of measuring the roll angle of the two-axis geomagnetism is proposed,and the Hall rudder attitude is measured by the Hall sensor,which satisfies the requirements of the system for the real-time and accuracy of the roll angle measurement.Aiming at the reduction process and maintenance control of the duck rudder,the scheme of PWM control was determined.The double-loop PID controller with the inner ring control duck rudder speed and the outer ring control angle position was designed.The feasibility of the algorithm was verified by simulation experiments.The overall scheme of the DSP-based modified control system is designed,including hardware circuit diagram design and software program design.The design ideas and detailed circuit analysis are given for the main functional modules.The overall operation flow of the software system is discussed.The software program of the filtering algorithm is written.The block diagram of the steering reduction and repair process is designed.By building a horizontal experimental turntable,the hardware-in-the-loop simulation test of the simulation trajectory correction process of the experimental prototype is carried out.The experimental results show that the comprehensive performance of the correction control system is good,and it has the characteristics of low power consumption,miniaturization and good stability,which has certain engineering practical value.