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弹箭与制导学报 >

2025 , Vol. 45 >Issue 2: 266 - 272

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2025.02.018

发控设备时统信号异常的故障树分析与改进

  • 郝义龙 ,
  • 王若瑶 ,
  • 刘晓濛 ,
  • 赵杨 ,
  • 殷睿
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  • 上海航天动力技术研究所, 上海 201109

郝义龙(1989—), 男, 工程师, 硕士。

收稿日期: 2025-02-27

  网络出版日期: 2025-05-15

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Fault Tree Analysis and Improvement of Time Synchronization Signal Anomalies in Launch Control Equipment

  • HAO Yilong ,
  • WANG Ruoyao ,
  • LIU Xiaomeng ,
  • ZHAO Yang ,
  • YIN Rui
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  • Shanghai Space Propulsion Technology Research Institute, Shanghai 201109, China

Received date: 2025-02-27

  Online published: 2025-05-15

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摘要

典型无控靶弹采用固体火箭发动机助推方式飞行, 通过发控设备实现地面点火发射。采用故障树分析法, 对发控设备在试验中出现的时统信号传输异常问题进行故障诊断和定位。首先对由点火控制器、电池盒、安全控制盒、笔记本电脑、无线电台等组成的发控设备的工作原理进行分析, 描述了时统信号传输异常的故障现象。然后针对时统信号传输链路特点, 建立故障树模型, 对各底事件开展定性分析, 通过逐一验证和排查, 确定了故障发生原因为点火控制器CPU软件中输出时统信号的逻辑上存在写冲突, 导致在特定触发条件下的时统信号脉宽小于101 ms, 不满足靶标端电台对信号输入的要求。分析了故障产生机理并复现了故障现象, 同时针对故障原因采取有效措施进行设计改进。测试结果表明, 改进措施有效, 提高了设备的可靠性。

关键词： 固体火箭靶弹; 发控设备; 时统信号; 脉宽异常; 故障树分析

本文引用格式

郝义龙 , 王若瑶 , 刘晓濛 , 赵杨 , 殷睿 . 发控设备时统信号异常的故障树分析与改进[J]. 弹箭与制导学报, 2025 , 45(2) : 266 -272 . DOI: 10.15892/j.cnki.djzdxb.2025.02.018

Abstract

A solid rocket motor-boosted uncontrolled target missile is launched through ground ignition method, which is implemented by a certain type of launch control equipment. In this paper, the fault tree analysis (FTA) is applied to diagnose and localize anomalies in time synchronization signal transmission occurred during the system testing. Firstly, the operational principles of the launch control equipment are introduced, which comprising an ignition controller, a battery box, a safety control box, a laptop computer, a target-side radio set and a command-side radio set. As the same time, the symptoms of time synchronization signal anomalies are also described. Subsequently, a fault tree model is constructed based on the signal transmission chain architecture in the system. Through the qualitative analysis of basic events and step-by-step verification procedures, the root cause is identified as a write conflict in time synchronization signal logic outputted from the CPU software of the ignition controller. And this conflict is found to reduce the pulse widths below 101 ms under specific triggering conditions, that do not meet the signal input requirements from the target-side radio set. The failure mechanism is rigorously analyzed, and the anomaly is successfully reoccurred by experiments. Design optimizations are implemented to resolve the software conflict, and test results confirm the effectiveness of these modifications, which demonstrating enhanced system reliability.

Key words： solid rocket target missile; launch control equipment; time synchronization signal; pulse width anomaly; fault tree analysis

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