多通道脉冲电流自动化检测设备

Multi-channel Pulse Current Automatic Testing Device

摘要:

多通道点火控制装置可控制航天器实现调姿变轨；针对多通道点火控制装置在大批量生产中点火脉冲电流自动化程度低、检测效率差、缺乏数值化表征的问题；提出一种对多通道点火设备脉冲电流采集检测的自动化改进方法，并研制了多通道脉冲电流自动化检测设备；该设备采用模拟数字转换器和基于SDLC(同步数据链路控制)通讯协议的控制系统，建立对于待测产品与检测设备之间集中控制和信息交互，实现对点火信号全周期采集，降低了人为错误风险和偏差；经实验测试，设备对全周期点火电流值的检测最大偏差不大于5%；经部署、工艺验证和长期使用，证明了该设备在提高测试效率、降低成本和改善质量方面取得了显著成果，已应用于某型发动机控制装置的检验测试作业。

Abstract:

Multi-channel ignition control devices can control spacecraft to achieve attitude adjustment and orbit change. Addressing the issues of low automation, poor detection efficiency, and lack of numerical representation of ignition pulse currents in the mass production of multi-channel ignition control devices, an automated improvement method for the acquisition and detection of pulse currents from multi-channel ignition equipment is proposed, along with the development of the multi-channel pulse current automatic device. This device uses an analog-to-digital converter and a control system based on the SDLC (Synchronous Data Link Control) communication protocol, establishing centralized control and information interaction between the product under test and the testing equipment, enabling full-cycle acquisition of ignition signals and reducing the risk of human error and bias. Experimental testing shows that the maximum deviation of the device in detecting the full-cycle ignition current value is not greater than 5%. After deployment, process validation, and long-term use, it proves that the device achieves significant results in improving testing efficiency, reducing costs, and enhancing quality, and is applied to the inspection and testing operations of a certain type of engine control device.