Open Access. Powered by Scholars. Published by Universities.®
- Institution
- Publication
- Publication Type
Articles 1 - 2 of 2
Full-Text Articles in Engineering
A Control System For Space Solar Power, Jeremy Straub
A Control System For Space Solar Power, Jeremy Straub
Jeremy Straub
This poster presents an algorithm for the implementation of a control system that accepts power requests and makes distribution assignments to maximize the performance of the overall space solar power (SSP) system and meet service level agreements (SLAs). This complex process involves projecting service-customer demand into the future, projecting power availability on each servicing spacecraft and implementing corrective measures should actual craft performance not meet with planning expectations. The control system is implemented as a planning problem with some deterministic elements (craft position and generation) and some probabilistically predicted elements (interference, drag and malfunctions). A heuristic solver is proposed that …
Adaptive Nonlinear Control For Autonomous Ground Vehicles, William Spencer Black
Adaptive Nonlinear Control For Autonomous Ground Vehicles, William Spencer Black
Open Access Theses
We present the background and motivation for ground vehicle autonomy, and focus on uses for space-exploration. Using a simple design example of an autonomous ground vehicle we derive the equations of motion. After providing the mathematical background for nonlinear systems and control we present two common methods for exactly linearizing nonlinear systems, feedback linearization and backstepping. We use these in combination with three adaptive control methods: model reference adaptive control, adaptive sliding mode control, and extremum-seeking model reference adaptive control. We show the performances of each combination through several simulation results. We then consider disturbances in the system, and design …