Research on Automatic Control Technology of Launch Vehicle First-Stage Loading and Unloading Connector
It is core equipment for first-stage loading and unloading fuel connector of launch vehicles to realize loading and unloa-ding propellant in first-stage tank.In view of current situation where first-stage connector in China mainly adopts manual docking,the automatic control technology of the pneumatically driven connector is studied.This paper analyzes the structure of the connector mechanism and the main steps of docking and falling off.The hardware system is composed of the PLC combination,DC power supply and sensor power supply combination,it collects the sensor parameters of the connector gas distribution table,and controls the sole-noid valve to drive the mechanism movement.The control software is designed to classify and construct the basic data,and the multi-granularity process is designed based on the object-oriented idea.The complex control logic can be realized by nesting and combining different granularity,and the process is described by the XML file.The automatic docking and falling off control process is intro-duced.The test results show that the time for automatic docking process and automatic falling off process is 133 s and 97 s respective-ly,which meets the usage requirements,it is applied in several tasks of a certain type,and strongly supports the development of model tasks.
launch vehicleloading and unloading connectorautomatically dockingautomatically falling off,control process
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