In inertial navigation systems for multistage space equipment,there are the calibration accuracy and compensation of in-terstage relative installation error,it has direct influence on its navigation accuracy.In practical engineering application,the calibra-tion of relative installation error is often a non-repetitive process,and there is a lack of testing means to quickly evaluate the accuracy of installation error.In order to improve the test coverage,an overall scheme of interstage dynamic alignment test is proposed in the system-level testing phase,and a set of automatic equipment for detecting the interstage installation error is designed.The test equip-ment is based on the control system of PXI bus as the core,and a swinging turntable is used to provide dynamic excitation.The upper computer test software based on Lab VIEW development platform is equipped,and the test software is uploaded to the product side,realizing the test process.Through experimental testing,the application of the testing system is verified.The further analysis of the test results reveals the interstage communication delay of inertial navigation system,which improves the test method and provides the accuracy of installation error detection.
关键词
惯导系统/级间相对安装误差/系统级测试/PXI总线/级间通信时延
Key words
inertial navigation system/interstage installation error/system-level test/PXI bus/interstage communication delay
维普
万方数据