Multi-Body Dynamics Modeling and Simulation of Maglev Satellites
Abstract
:1. Introduction
2. Modeling of Three Body Dynamics of Maglev Satellite
2.1. Definition of Coordinate System and Position Vector
2.2. Platform Subsystem Kinetic Energy
2.3. Platform Subsystem Dynamics Equation
2.4. Payload Subsystem Dynamics Equation
3. Design of Three Body Multi Closed Loop Control Law
3.1. Position Follow-Up Control Law of Platform Subsystem
3.2. Design of Payload-Centered Attitude Pointing Control Law
3.3. MM Driving Control Law
4. Simulation Results and Analysis
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Symbolic | Significance |
---|---|
The origin of the inertial frame points towards the center of mass of the platform subsystem | |
The centroid of the platform subsystem points to a certain quality element on the platform | |
The center of mass of the platform subsystem points towards the origin of the MM | |
The origin of the MM system points to a certain mass element of the MM |
Category | Platform-Centered Control Method | Payload-Centered Control Method |
---|---|---|
Payload attitude control expectation | Expected trajectory undergoes two-stage rotation | On the basis of ground orientation, two-stage rotation according to the expected trajectory |
Payload measuring element | Non-contact eddy current sensor | Star sensors, gyroscopes, and position sensors |
Satellite platform control expectations | Ground orientation (only unilateral posture) | Follow the movement of the payload (in terms of position and posture) |
Category | Centroid Position/Attitude Quaternion | Quality (kg) | Moment of Inertia (kg × m2) |
---|---|---|---|
Satellite | |||
Payload | |||
SM | |||
MM | |||
PM |
Parameters | Values | Parameters | Values |
---|---|---|---|
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Li, Z.; Wang, W.; Wang, L. Multi-Body Dynamics Modeling and Simulation of Maglev Satellites. Appl. Sci. 2024, 14, 7588. https://doi.org/10.3390/app14177588
Li Z, Wang W, Wang L. Multi-Body Dynamics Modeling and Simulation of Maglev Satellites. Applied Sciences. 2024; 14(17):7588. https://doi.org/10.3390/app14177588
Chicago/Turabian StyleLi, Zongyu, Weijie Wang, and Lifen Wang. 2024. "Multi-Body Dynamics Modeling and Simulation of Maglev Satellites" Applied Sciences 14, no. 17: 7588. https://doi.org/10.3390/app14177588