嵌入式虚拟动态信号分析仪的设计

Design of embedded virtual dynamical signal analyzer

为了给远程化控制的光电跟踪系统提供抗恶劣环境的设计工具,设计了一种嵌入式虚拟动态信号分析仪并对该系统采用的系统辨识等算法进行了研究。基于某型号光电跟踪系统平台,结合虚拟仪器概念和嵌入式技术,建立了嵌入式虚拟动态信号分析仪的系统架构,设计了仪器系统架构中各层软件。利用该仪器测试了实际运行中的光电跟踪系统速度回路和电流回路,实验结果表明光电跟踪系统满足设计要求,电流回路带宽为266.05 Hz,速度回路带宽为20.3 Hz,虚拟仪器具有较好的精确度和实用性,满足了光电跟踪系统设计工具准确、方便、快捷等要求,提高了光电跟踪系统设计水平和设计效率。

In order to provide a design tool for the photoelectronic tracking systems in remote controls, an embedded virtual dynamical signal analyzer is established, and its applied algorithms such as system identification are investigated. Based on the platform of a photoelectronic tracking system and combining the concept of a virtual device with the embedded technology, an idea for an Embedded Virtual Dynamical Signal Analyzer（EVDSA） is presented and the system infrastructure is established. Three layers of softwares for the system infrastructure is designed respectively and the application layer based on the system identification technology is introduced especielly. The current loop and the speed loop of the photoelectronic tracking system are tested by the EVDSA and the experimental results show that the photoelectronic tracking system meets the design demands for the bandwidths of a current loop of 266.05 Hz and a speed loop of 20.3 Hz. The virtual device has good accuracy and practicability, which can satisfy the design tool requirements of precise, convenient and rapid speed design levels and can improve the efficiency of the photoelectronic tracking system.