Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5000413 | Control Engineering Practice | 2017 | 12 Pages |
Abstract
This work presents a Model Predictive Controller (MPC) that is able to handle Linear Time-Varying (LTV) plants with Pulse-Width Modulated (PWM) control. The MPC is based on a planner that employs a Pulse-Amplitude Modulated (PAM) or impulsive approximation as a hot-start and then uses explicit linearization around successive PWM solutions for rapidly improving the solution by means of quadratic programming. As an example, the problem of rendezvous of spacecraft for eccentric target orbits is considered. The problem is modeled by the LTV Tschauner-Hempel equations, whose state transition matrix is explicit; this is exploited by the algorithm for rapid convergence. The efficacy of the method is shown in a simulation study.
Keywords
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Physical Sciences and Engineering
Engineering
Aerospace Engineering
Authors
R. Vazquez, F. Gavilan, E.F. Camacho,