FY-2卫星应急章控技术的改进与实现

Improvement of Emergency Nutation Control Technology for FY-2 Satellite

海上测控系统＂风云二号＂（FY-2）控制处理软件在应急章动控制中存在加速度负向过零时刻计算不准、应急章动控制反弹跳以及交叉控制过程脉冲前沿时间补偿等技术难点。在分析应急章动控制原理的基础上,提出了改进方案,并给出了软件实现的具体流程图。经过＂风云二号＂04～06星内部联调以及与测控中心联调任务的验证,软件计算结果准确,运行稳定可靠,实际控制效率较高。

Technical challenges including inaccurate computation of the negative zero-crossing time of acceleration,rebound jump of emergency nutation control and compensation for the pulse front edge during cross control were encountered by FY-2 control and processing software of YW maritime tracking and control system.Following analysis of the principle of emergency nutation control,this paper proposes an upgrade design.A detailed flow chart for software implementation is given.As validated in internal integration and tests of FY 04-06 satellite and integration and tests with the satellite control center,the software provides accurate computation results,stable and reliable operation and high control efficiency.