感应装定系统中功率放大电路的设计与仿真

Design and Simulation of Power Amplification Circuit in Induction Setting System

由于低射速大口径火炮的弹丸口径较大,目前的感应装定系统无法实现无线能量的远距离传输。为了解决这一问题,在传统装定器电路中引入射频识别(RFID)技术中的功率放大电路,将调制信号先进行放大再加载到发射线圈上,即可得到较大的输出信号,实现远距离传输。所设计的功放电路的载波频率为1 MHz。通过Multisim 10.0仿真软件,构建了D类功率放大电路。对放大器的相关性能进行仿真测试,从而得到合适的电路元件参数。搭建了试验平台,通过解调电路测试发现,在电源电压为15 V时,最远感应装定距离可以达到12 cm,解码电路也可以得到完整的原始信号,完全满足火炮装定时的最小距离要求。随着电源电压的升高,感应装定距离也在变大,保证了信号和能量的远距离传输。

For the large projectile caliber of low-speed,large-caliber guns,current induction setting systems cannot achieve wireless energy transmission over long distances. In order to solve this problem,the power amplification circuit of radio frequency identification（ RFID） technology is introduced into traditional setter circuits. The modulated signal is amplified and loaded onto the transmitting coil to obtain a larger output signal and achieve long-distance transmission. The carrier frequency of the power amplifier circuit is 1 MHz. The D power amplifier circuit is built by Multisim 10. 0 simulation software,and the related performance of the amplifier is simulated and tested,to obtain appropriate parameters of circuit components. The specific experimental platform is set up,and through the demodulation circuit test,it is found that when the power supply voltage is 15 V,the maximum induction setting distance is up to 12 cm,and the decoding circuit can also get the complete original signal,fully meets the requirements of the minimum artillery setting distance. As the power supply voltage increases,induction setting distance is also bigger to achieve the signal and energy transmission over long distances.