| Because of its advantages of low power consumption and high stability,wired fuze setting has become one of the main means at home and abroad.At present,the change of cable length,circuit parameters and coding mode are the main factors that affect the speed and reliability of cable setting.In the setting process of synchronous transmission of energy and information,the optimization design of system specific parameters and coding mode can improve the rapidity of energy transmission and the reliability of information transmission,and provide basic theory and important support for the first strike and accurate strike in the battlefield,which is of great significance.According to the principle of wired setting,the factors affecting the setting performance such as cable parameters,circuit device parameters and signal coding mode are analyzed,and several ways to improve the performance of wired setting system are given: improving signal transmission channel,optimizing circuit parameters,designing optimal signal transmission coding mode and optimizing software program.First of all,the influence of the change of wire loop parameters on the setting speed is studied.Based on the analysis of the parameters of the fuze module,the equivalent circuit model of the cable module and the cable pole module is established According to the limited conditions of energy storage capacitance value selection,the scheme of optimizing energy storage capacitance value is put forward,the circuit model of energy storage capacitance discharge is established,and the optimal energy storage capacitance value under the condition of reliable setting is obtained.According to the setting process,the whole influencing factors of setting rapidity are studied,the influence of different setting strategies on setting rapidity is put forward,and the capacitance in the process of information setting is deduced The relationship between charging time and signal transmission time.Secondly,the influence of the parameter change of the cable loop on the setting reliability is studied.In this paper,the wire setting information transmission model is constructed,the voltage variation relationship between distributed capacitance and energy storage capacitance during information setting is analyzed,the influence of distributed capacitance on signal transmission is studied,the waveform distortion rate applicable to the setting system is defined,and the linear relationship between distributed capacitance and waveform distortion rate is determined;the simulation results under different signal coding modes are analyzed And the influence of the worst coding mode of different charging and discharging circuits on the internal energy storage capacitance of fuze;the influence of temperature change on the capacitance value of the circuit is analyzed,and the mathematical model of temperature change and waveform distortion rate is given;aiming at the influence of the distributed capacitance existing in the cable and the change of ambient temperature on the waveform distortion,the optimal coding mode is proposed to compensate the theoretical coding mode Code pattern determination method.Finally,the existing wired setting system is taken as an example to design and verify the experiment.It is verified that the optimized energy storage capacitor can meet the setting reliability.When the optimized energy storage capacitor is set successfully and reaches 10 V voltage,the charging time is saved by 24.13 ms compared with that before optimization,accounting for 50% of the setting time before optimization.In the experiment of the optimal setting strategy,the information and energy flow mode is adopted.When the energy storage capacitor voltage reaches 6V,the charging time is shorter 31.38 ms than that before optimization The calculation model of cable capacitance is optimized,and the relationship between distributed capacitance and waveform distortion rate is obtained.Ku=100╳（8.751C+15.61）%.It is verified that the optimal coding mode can effectively improve the reliability of the setting system;the relationship between temperature and waveform distortion rate is obtained;the real reliability of the relationship is proved,which provides theoretical support for engineering practice and has important significance. |
PDF Full Text Request