摘要
在分析了航空重力测量的供电系统设计,针对满载上电困难或重复启动的不稳定情况,本文提出一种基于VICOR电源模块的新型电路连接方式来解决上述问题。在航空重力电源设计中,一般电路结构的设计和参数选择会参考电源芯片模块生产厂家的技术手册,选用整流滤波模块的EN端来驱动DC-DC模块,但经常遇到满载上电困难或重复启动等类似故障,影响电源的稳定运行。本文采用VICOR模块的BOK输出端结合三极管来控制DC-DC电源模块PC使能端,不影响前端整流滤波电路的上电。电路分析结果表明,相对于EN端驱动使能,采用BOK端驱动时,在输出低电平时,能保证低于2.3 V的阈值电压,充分的封锁PC使能端,不会出现满载上电困难或一直重复启动等现象,使得航空重力供电系统能够更加安全和稳定的工作。
After analyzing the power supply system design of airborne gravity measurement,aiming at the instability of full load power on or repeated start,a new circuit connection mode based on VICOR power module is proposed to solve the above problems.In the design of aviation gravity power supply,the general circuit structure design and parameter selection refer to the technical manual of the power chip module manufacturer,and the EN port of the rectifier filter module is selected to drive the DC-DC module.However,similar faults such as full load power on difficulty or repeated startup are often encountered,which affect the stable operation of the power supply.In this paper,the BOK output of VICOR module combined with triode is used to control the PC enable port of DC-DC power supply module,which does not affect the power on of front-end rectifier filter circuit.The circuit analysis results show that compared with the EN port drive enable,when using the BOK drive,the threshold voltage lower than 2.3 V can be guaranteed at the output low level,the PC enable port can be fully blocked,and there will be no phenomena such as full load power on difficulty or repeated startup,so that the aviation gravity power supply system can work more safely and stably.
作者
蒋久明
安战锋
石磊
孟庆奎
金久强
王志博
JIANG Jiu-Ming;AN Zhan-Feng;SHI Lei;MENG Qing-Kui;JIN Jiu-Qiang;WANG Zhi-Bo(China Aero Geophysical Survey and Remote Sensing Center for Natural Resources,Beijing 100083,China;Key Laboratory of Airborne Geophysics and Remote Sensing Geology,Ministry of Natural and Resources,Beijing 100083,China)
出处
《物探与化探》
CAS
北大核心
2021年第6期1455-1461,共7页
Geophysical and Geochemical Exploration
基金
自然资源部“航空地球物理与遥感地质重点实验室青年创新基金”(2020YFL06)。
