基于FPGA的液体火箭发动机控制监测系统研制

Control Monitoring System Based on FPGA for Liquid Rocket Engine

随着液体火箭发动机内部结构日益复杂,传统的控制遥测模式难以满足测控需求;针对液体火箭发动机的智能化需求,为实现高效的发动机状态管理和运行参数的实时监测,研制了一种基于现场可编程门阵列(FPGA)的控制监测系统;该系统拥有24路发动机驱动控制能力,具备32路信号同步采集、实时处理与存储能力,能够实现同步RS422总线通讯,并具有HDLC(High-Level Data Link Control)协议数据的编解码能力;实验结果表明,该系统能够对发动机阀门进行驱动控制及发动机状态参数的实时采集,实现基于HDLC协议的数据通讯;以硬件为核心的控制监测系统提高了发动机电器系统的集成性,提升了系统可靠性,为发动机健康管理、故障诊断算法的搭载奠定硬件基础。

With the increasingly complexity of liquid rocket engines,traditional control modes are difficult to meet the requirements for measurement and control;For the intelligent needs of current liquid rocket engines,an efficient real-time control and monitoring of liquid rocket engine system based on field programmable gate array(FPGA)is designed.The control and monitoring system has the characteristics of 24-channel drive control capability,32-channel signal synchronous collection,real-time processing and storage capabilities,which can achieve the communication with synchronous RS422 based on the high-level data link control(HDLC)protocol.The experimental results show that the control monitoring system can drive the engine valve,real-time collect the engine status parameters,and achieve the data communication based on the HDLC protocol;the hardware-based control and monitoring system can increase the integration of engine electrical system,and improve system reliability,it provides a hardware foundation for future engine health management and fault diagnosis algorithms.