Fuzes Airflow Vibrating Piezoelectric Generator Power Correction Enabling Technology

The concept of missile-borne fuze fluidic piezoelectric generator was put forward based on traditional fluidic generator. It ultilize piezoelectric effect that transform continuous fluidic induced vibration to electric energy that supplys fuze power system.The virtues of the this novel geneartor include simple structure, compact, reliable during both sleeping and awake status and high specific power, etc, thus it is becoming the best choice of high power volume and small size missile-borne fuze generators.Aiming at the high specific power supply requirements of the novel generation of missile-borne electrical fuze, the power factor correction and energy increasing technology of missile-borne fluidic vibration piezoelectric generator is studied in this dissertation.Combined with the working principle of the vibration piezoelectric generator and the detonating characteristics of the typical fuze, the relation of the apparent power and the active power in vibration piezoelectric generator is given based on the optimal power transmission standards. The reason of low energy output is that the small conduction angles of diode rectifier in the generator causes distortion of outputcurrent waveform.A method to increase the energy utilization of generator is put forward by using power factor correction circuit to generate continuous current output. The reactive power compensation circuit based on both parallel capacitor combination structure and buck-boost circuit are also analyzed. The results show that adding power factor correctioncircuit can effectively improve the continuous power supply of vibration piezoelectric generator and improve the efficiency of the load's active power. Study shows that the size and structure of piezoelectric transducers have a significant impact on natural frequency of the transducer. The missile-borne fluidic piezoelectric generator's working environment simulation is analyzed based on the vibration control system, and the overall program of digital piezoelectrictransducers vibration simulation test is designed including fixtures and measurement system.The research and results in this dissertation provide theoretical basis for further experiment of fuze fluidic generator's power correction and energy increasing, and provide the basis for the further research and design to improve energy output of fuze vibration piezoelectric generator.