Optimal Strategies for Disjunctive Sensing and Control
For spacecraft control practitioners, this provides a practical solution to a hardware constraint, but the approach is incremental.
The paper addresses disjunctive sensing and control for spacecraft, where sensors and actuators cannot operate simultaneously. It proposes a periodic sequence ensuring bounded states and estimation error covariance, with good simulation performance.
A disjunctive sensing and actuation problem is considered in which the actuators and sensors are prevented from operating together over any given time step. This problem is motivated by practical applications in the area of spacecraft control. Assuming a linear system model with stochastic process disturbance and measurement noise, a procedure to construct a periodic sequence that ensures bounded states and estimation error covariance is described along with supporting analysis results. The procedure is also extended to ensure eventual satisfaction of probabilistic chance constraints on the state. The proposed scheme demonstrates good performance in simulations for spacecraft relative motion control.