一种高可靠的运载火箭测发控设备

A Highly Reliable Launch Control Equipment For Launch Vehicle

摘要:

为满足运载火箭对测发控设备的通用化及高可靠的要求，对运载火箭测发控设备的设计方案进行了研究。整体设备采用通用机箱加标准化模块的设计思路，背板采用自定义的机内接口，基于业务信息和管理信息异构的设计思想，通过背板上冗余的CAN总线及RS485总线实现业务和管理信息的分离，以及管理总线对业务总线的异构备份，机箱及标准化模块通过读取背板信息确认当前插槽及模块类型，实现模块的灵活布置，采用模块热备和总线热备两级热备方案，以及自定义的内部通信协议，经过测试实现了测发控设备在各类故障模式下的正常工作，冗余切换延时小于500ms，该设备已于某新型低温液体运载火箭上成功应用，经过实际应用满足运载火箭测发控系统的要求，后续可应用于其他运载火箭的相关领域。

Abstract:

In order to meet the requirements of universal and high reliability of launch vehicle test and control equipment, the design scheme of launch vehicle test and control equipment is studied. The overall equipment adopts the design idea of general chassis plus standardized module, and the backplane adopts the customized internal interface. Based on the design idea of heterogeneous business information and management information, the separation of business and management information is realized through the redundant CAN bus and RS485 bus on the backplane, and the heterogeneous backup of the management bus to the business bus. The chassis and standardized module confirm the current slot and module type by reading the backplane information, The flexible arrangement of modules is realized. The two-stage hot standby scheme of module hot standby and bus hot standby is adopted, as well as the self-defined internal communication protocol. After testing, the normal operation of the controller and module under the second degree fault is achieved, and the redundancy switching delay is less than 50ms. The equipment has been successfully applied on a new type of low temperature liquid launch vehicle, and the actual application meets the requirements of the launch vehicle test and control system, It can be applied to other launch vehicle related fields in the future.