Design and Analysis of Vertical Dynamic balancing machine flexure for satellite balancing

The success of a satellite mission is dependent on the accuracy of the measurement of its mass properties. Mass properties of a satellite viz. static and dynamic unbalance play a vital role in during satellite launching and attitude and orbital control. Satellite’s center of gravity (staic unbalance) and product of inertia (dynamic unbalance) are measured in Vertical Dynamic Balancing Machine (VDBM). VDBM has key components comprising of viz. Hydrostatic bearing, DC drive, Flexures, Velocity pick-up transducers and Data acquisition System. The Flexures plays very important role in VDBM in determining the accuracy of machine apart from transducers. In this paper design and analytical approach adopted for flexure design to sense the Static and Dynamic unbalance is presented. Analytical formulation is derived for the modeling of the behavior of flexures incorporating velocity transducer output. Experimental results are correlated with the analytical results and are found to be in close match.