Abstract
The two-axes position mechanism of a satellite antenna is a free-floating space rootless and multi-body system. Based on the need of dynamics real-time simulation and control system design, spatial operator algebra (SOA) theory is applied to the multi-body systems modeling and simulation. The dynamics recursion and solution algorithm of SOA is proposed, and the object-oriented idea is utilized to define the data structure of the multi-body system, and to design the flow-chart of the dynamical calculation. This method is heuristic, easy to derivate, and has clear physical sense and O(n) computational efficiency. Through comparison with Simpack simulation results, it shows that, the multi-body dynamic algorithm of SOA has higher simulation accuracy and faster computation speed.
| Original language | English |
|---|---|
| Pages (from-to) | 85-90 |
| Number of pages | 6 |
| Journal | Binggong Xuebao/Acta Armamentarii |
| Volume | 32 |
| Issue number | 1 |
| State | Published - Jan 2011 |
| Externally published | Yes |
Keywords
- Mechanics
- Multi-body system dynamics
- Recursive computation
- Spatial operator algebra
- Two-axes pointing mechanism
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