基于双DSP架构的小型飞控系统设计研究

A Flight Control Computer of Double DSP Structure for Mini UAV

为了提高无人机的控制性能,针对某小型无人机,提出并实现了以双DSP为核心的无人机飞行控制计算机的硬件设计方案;详细给出了系统整体方案的设计和具体的硬件选型;介绍了SPI串行总线的通信特点,并根据该特点将数据拆分为4桢发送以提高效率;数据接收采用双缓冲方式,既降低了数据丢失和冲突的几率又减小了系统延迟;实践证明,该实现方法结构简单,功能强大,能够满足系统控制的要求,已成功应用于某小型无人机系统,具有较高的实用性。

A new hardware system of UAV flight control computer,using double DSP as its control core,is designed in order to improve the control capability of UAV.In this paper,the system design and component selection are presented in detail.The characters of SPI port are also illustrated.Combining characters of SPI with request of Flight Control System,sending data are separated into 4 parts in order to achieve higher transmission efficiency.Receiving Data are collected through double buffer which can not only avoid data missing and conflict effectively but also decrease system delay.The system,with its characters of simple configuration and powerful function,has been applied in certain UAV.As the experiment result indicates,this design can satisfy the system demand with high performance and robust capability.