Developing Spacecraft Attitude Dynamics and Kinematics Models

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Resource Overview

1. Implement spacecraft attitude dynamics and kinematics models using S-function approach in Simulink; 2. Linearize nonlinear models using linmod function; 3. Apply pole placement method to calculate control parameters after attitude model linearization; 4. Simulate control performance by integrating control parameters into nonlinear model.

Detailed Documentation

In this article, we demonstrate how to create spacecraft attitude dynamics and kinematics models using S-function methodology within Simulink. To better analyze these models, we employ the linmod function for linearizing the nonlinear system. After linearizing the attitude model, we utilize pole placement techniques to derive optimal control parameters. Finally, we incorporate these control parameters back into the nonlinear model to simulate and evaluate control performance. This practical approach provides comprehensive insights into building complex system models using Simulink, while mastering techniques for nonlinear model linearization and control parameter optimization. The implementation involves creating custom S-functions that define state equations, using linmod to extract state-space matrices at operating points, and applying control design algorithms for pole placement calculations.

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