Application Research On The Measurement Technology In The Centroid Measurement Systems For Solid Rocket Motor

The location of centroid is the one of important parameter of Solid Rocket Motor (SRM). It has important influence for the flexibleness of body, stability of running, safe of running and so on. When the SRMs are designed, tested and finalized, we need measure it accurately and fast.The present paper topic originates from the unit scientific research topic. According to the character of SRM and fast and high precision demand of centroid measure,as well as the unit approves the production the need, uses the horizontal-type three-point method survey principle, has designed a system based on modern monitoring technology SRM quality heart measuring devices.The paper particularly discusses emphatically the measure principle and composition of the centroid measure system, with emphasis on the system design .On the basis of technology of centroid measurement research, the measurement method which advantaged on the solid rocket motor has been proposed, and the testing system based on a computer- monitoring and control technologies has been established. In the system design, the control system components were used in selection . To complete the mass center of SRM position measurement, the measurement of the specific methods proposed, Has designed the SRM position observation and control system. A detailed analysis of the implementation process measurement and control technology and the basic principles. Through the monitoring and control system data processing unit to achieve a centroid measurement of SRM.In error analysis,detailed analysis of the system measurement error sources and the factors that affect the measurement uncertainty.And through the axial and radial center of mass measurement accuracy of calculation the paper analyzes the factors which influence measure system precision. Has been the centroid of the solid rocket motor, axial and radial measurement system centroid measurement uncertainty is less than the design requirements . Shows that the centroid measurement and control technology based measurement system with high enough accuracy, the system design is feasible.