一种执行机构等效装置设计

The Design of a Actuator Equivalent Device

摘要:

为了满足航天器桌面散态匹配试验测试需求，研制一种基于PC104总线的执行机构等效装置，详细阐述了等效装置的功能、工作原理、硬件电路设计、软件设计思想，该系统采用模块化、可配置软件架构设计，实现了正常、应急多测试工况一体化设计；应用严格的窗口比较器硬件电路设计技术，实现信号电压幅值的高精度采集，确保输入信号的可靠判定；利用FPGA技术突破信号脉宽高精度采集和信号延时高精度可控等关键技术，该系统实现了输入信号幅值、脉宽的实时采集、存储与显示，并按照事先设定的工作模式及配置参数，完成不同测试工况下输出信号的模拟反馈。试验结果表明，系统稳定可靠，人机界面友好，满足航天器多测试工况控制时序和功能检查需求。

Abstract:

In process of spacecraft desktop dispersed state matching test, to avoid actuator’s problem,such as Occupying a large area, fixed difficult and affecting lifetime,The control time sequence and function check is completed by using a method of controller design combined with actuator equivalent device.This paper introduced a command and respond design oof actuator equivalent device based PC104 bus．It made a detailed introduction for Actuator Equivalent Device in hardware architecture and the principle．It also gives a for-mulation for the main flow of the software system design and a variety of functions of the program．