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Navigation information of airborne vehicles ejected from some moving platform need proper initialization and the process is termed as transfer alignment. The misalignment between the ejected vehicle and the moving platform is computationally estimated and corrected to provide accurate navigation. The estimator has to filter the noisy measurement provided by the navigational sensors mounted in the...
In case of delivery of guided munitions, the orientation of the daughter vehicle is aligned with that of the mother, prior to ejection. A predefined trajectory is provided to the daughter for guidance purpose. In the absence of external perturbation, the velocity matching Kalman filter methods yield fairly good estimation of post ejection navigation information for the daughter. However, after being...
This paper presents a power hardware-in-the-loop (PHIL) framework for testing advanced inverter features such as voltage regulation and frequency response that interact dynamically with the electric grid. The PHIL model simulates grid voltage dynamics using a simplified Thévenin-based model and simulates grid frequency dynamics using a turbine-governor model including droop, inertia, and damping....
This paper explores and presents the capabilities of real time hardware-in-the-loop (RT-HIL) digital simulation for electric microgrids. RT-HIL is used by academia and industry for the simulation and testing of power systems at both the component and system levels. A literature survey is presented to identify existing real time simulation systems and some relevant applications. Simulations using RT-HIL...
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