摘要
基于DSP2812的某型无人机导航/飞控系统,针对电源干扰而导致DSP的复位问题,从硬件和软件两个方面进行处理;硬件上,采用电容去除电源的噪声,尽量避免DSP的复位,软件上,采用复位标志区分系统是上电复位还是异常复位,对异常复位作特殊处理,保证DSP复位后系统能保持复位前的,引入看门狗模块,程序"跑飞"或死机后,能使系统自动复位而重新恢复正常;通过半物理仿真试验表明,所采用的设计思路能有效提高导航/飞控系统的抗干扰能力,保障无人机的安全。
Navigation and flight control system of unmanned aerial vehicle(UAV)is based on DSP.With regard to the reset of DSP due to power interference,it will be solved from software and hardware aspects.On hardware,capacitance is used to remove the noise of power,in order to avoiding the reset of DSP;on software,reset flag is adoptde to judge the reset of electrifying or abnormity,then processed the reset of abnormity to ensuring the system after reset of DSP to return to the prevenient state.Watchdog module is used to enable the system to reset automatically to return nor-mality after computer is down or program is running out of order.The results of the semi--physical simulation show that the technique can effectively improve the anti--jamming capability of the navigation and flight control system and ensure the safety of the UAV.
作者
曾赟
闫建国
周志久
Zeng Yun;Yan Jianguo;Zhou Zhijiu(College of automation,Northwestern Polytechnical University,Xi’an 710072,China)
出处
《计算机测量与控制》
CSCD
北大核心
2009年第1期83-84,134,共3页
Computer Measurement &Control
关键词
抗干扰
导航/飞控系统
无人机
DSP
anti--jamming
navigation/flight control system
unmanned aerial vehicle
DSP
