Fuze Technology Research Articles

FSK energy modulation integrated primer fuze technology based on S-P topology

Abstract The wireless energy transmission technology is utilized in the integrated primer fuze device to achieve the integrated transmission of energy and information for weapon equipment. A wireless energy and information transmission system model is designed specifically for the characteristics of energy and information transmission of integrated priming fuze. The working principle of the system under S-P magnetic coupling resonance is analyzed, and the inverter circuit and rectifier circuit are further designed. To achieve synchronous transmission of energy and information, an energy modulation/demodulation method based on FSK is proposed. Simulation verifies the feasibility of the system design, showing that while the S-P system has a simple structure and constant voltage output characteristics, it belongs to first-order resonance. When transmitting information through frequency modulation, there will be a reduction in system transmission efficiency due to deviation from the resonance point, making it only suitable for systems with small energy transmission requirements.

An Improving Model on Contact Time of The Inertial Impact Switch

Inertial impact switch is a widely used inertial force recognition element in electromechanical trigger fuze of missiles, rockets and artillery shells. In this paper, the impact responses of inertial switch are investigated with abundant acceleration loads through the dynamics analysis. Based on the Machete hammer experiment, the accuracy of the dynamics model is verified with a very small error. The systematic dynamic analysis shows that the contact time of impact proceeding keeps continuously increasing with greater pulse width and acceleration load. On the other hand, the threshold of switch decreases alone with the pulse time. To improve the performance index of the inertial impact switch, a spherical structure model is proposed. Surprisingly, a significant improvement of the contact time is discovered comparing with the cylindrical structural model. The proposed new structure will provide important technical reference for the practical application of devices in fuze technology field.

Development and prospect of advanced fuze technology

Development and prospect of advanced fuze technology

Optimal-Damage-Effectiveness Cooperative-Control Strategy for the Pursuit–Evasion Problem with Multiple Guided Missiles

In this paper, an optimal-damage-effectiveness cooperative-control strategy based on a damage-efficiency model and a virtual-force method is proposed to solve the pursuit-evasion problem with multiple guided missiles. Firstly, different from the overly ideal assumption in the traditional pursuit-evasion problem, an optimization problem that maximizes the damage efficiency is established and solved, making the optimal-damage-effectiveness strategy more meaningful for practical applications. Secondly, a modified virtual-force method is proposed to obtain this optimal-damage-effectiveness control strategy, which solves the numerical solution challenges brought by the high-complexity damage function. Thirdly, adaptive gain is designed in this strategy based on guidance-integrated fuze technology to achieve robust maximum damage efficiency in unpredictable interception conditions. Finally, the effectiveness and robustness of the proposed strategy are verified by numerical simulations.

DSP Technology and Its Application in Fuze Signal Processing

The continuous innovation of the embedded digital signal processor (DSP) brings new opportunities for the breakthrough of fuze technology, so that the weapon system can complete the detection battlefield, precise control, high-efficiency damage without changing the existing shape and volume of the fuze. This paper first introduces the advantages and characteristics of DSP chips, then summarizes the application of DSP in a variety of fuze signal processing. Finally, the development direction and application trend of DSP in fuze are prospected.

一种适用于空空导弹的激光灰度成像引信技术

一种适用于空空导弹的激光灰度成像引信技术

Pseudo‐random frequency hopping fuze technology based on signal reconstruction

To solve the problems of poor fixed distance precision and difficult engineering implementation of the pseudo-random frequency hopping fuze, a new signal processing method for the fuze based on signal reconstruction is proposed in this study. First, the transmitted signal is used to generate a set of local reference signals for the matched filter. Then all the local reference signals are applied to coherent integrate with the reflected echo, respectively. Finally, any channel of these correlation peak values exceeding the presupposed threshold can be taken as fixed distance successfully. Furthermore, the relative speed between the missile and target can be approximately estimated by the corresponding channel number. The simulation results show that the method can detect the target precisely, which means that the problem of mismatched filter has been solved. Moreover, the method is easy to be implemented, which can greatly improve real-time property of the fuze, thus it has practical value for engineering application.

Design of a Fuze Power Supply to Small Caliber Time Fuze

The modern fuze technology puts forward higher and higher requirements of the fuze power, especially the fast feature of supplying power. Capacitor energy storage power whose energy is from the setter can supply power for fuze before launching the projectile, but its energy is little, so it couldnt satisfy the energy for the fuze work. The turbine alternator can generate power in all the trajectory, so its energy is enough, but it has the hysteresis characteristics of the start-up. This paper puts forward a composite power supply of using two kinds of power supply to solve the requirement of the fast feature of supplying power. Finally, the experiments demonstrate the composite power supply is feasible.

Advanced optical fuzing technology

Advanced optical fuzing technology