Reseach On Real Time Compensation Of Coaxial Coil Type Dynamic Gyro’s Line Of Sight Rate

Coaxial coil type power gyroscope is widely used in military field.When it is in off-axis condition,there will be additional torque to move the gyroscope toward the missile axial.As the inconsistency in the coil assembly process makes the moment change uncertain,thus reducing the efficiency of the compensation circuit,the system output line angle velocity measurement results are distorted,affecting the missile guidance accuracy.Aiming at the improvement of the precision and guidance precision of a two-color multi-directional guidance system,the related work has been carried out,the working principle analysis of the guidance system,the finite element simulation of the magnetic field,the circuit decoupling design,Compensation software algorithm design and dual DSP real-time compensation digital information processing platform design,to achieve a coaxial coil dynamic gyro bit of a line of sight angular velocity real-time compensation method,successfully meet the system requirements.In this paper,the infrared guidance system using coaxial coil type dynamic gyroscope is taken as the research object.Through the system analysis,the formation of the guidance signal of the multi-pulse modulation system is studied,and the factors influencing the guidance precision are explored.Then,through the analysis of the tracking,guidance and follow-up circuit,the linearity of the output signal And design variable gain compensation scheme to improve the missile follow-up angle and guidance accuracy.The finite element electromagnetic field simulation is used to establish the complex coaxial coil marker model,and the static and transient simulation is completed.The optimal angle winding coil is determined by changing the parameters,and two different Decoupling compensation circuit,through the identification of important technical indicators to determine the final use of the transformer program,so that the scalar output signal angle linearity of the weapon system to meet the accuracy requirements of the control system,but also meet the line of sight speed compensation circuit requirements,At the same time the important parameters of the system indicators of electric lock quality is not affected.After the completion of the coil improvement,through the study of the interference factors of the recovery torque,a mathematical model which can describe the nonlinearity of the interference is established,and the nonlinear compensation software algorithm is designed.Finally,through the design of real-time digital information processing system,and through the system test to verify the effectiveness of the compensation effect,the system’s guidance accuracy to meet the index requirements,improve the product’s pass rate.