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Showing 1 to 7 of 7 for “"Slung Load"”.
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Systematic investigation of models of helicopter with a slung load
Some of the analytical models of the helicopter-load system developed in this work should be helpful in further analyzing the motion of such a configuration. It is recommended that subsequent studies should examine the following aspects of the motion of the vehicle-load system. Considering the …
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Modelling, estimation and control of a twin-helicopter slung load transportation system
… lower performing helicopters to share the load is cheaper. Beyond just sharing the load of the cargo, the objective in this investigation is to control the attitude such that precise placement of the cargo can be made. This objective cannot be achieved using a single helicopter, unless a …
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State and Dynamics Estimation in an Outdoor Multi-Drone Slung Load System
… delivery, security, and defense. Adding a load attached to one or more drones using a flexible cable can significantly enhance the capabilities of these platforms. This work aims to develop a multi-drone platform, built on open-source tools such as PX4 and ROS2, that can be used to lift a …
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Design of a Helicopter Slung Vehicle for Actuated Payload Placement
… used in applications where they need to carry a slung load for years. More recently, unmanned (UAV) helicopters are being used to deliver supplies to military units on the ground in theaters of war. This thesis presents a helicopter slung vehicle used to carry the payload and furthermore, provide …
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Stability Limits of Uncertain Systems in the Presence of Unmatched Coupled Dynamics and Actuator Dynamics with Adaptive Architectures
… are applied to the helicopter and quadrotor slung load examples, demonstrating stability limits and revealing the minimum required actuator bandwidths for each approach. For a helicopter, where longitudinal dynamics must be stabilized despite load-induced coupling effects, and for a quadrotor …
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Adaptive Control for a Class of Nonlinear, Time Varying Rotational Systems
… mission profiles, fuel burn or transfer and payload deployments or slung loads can supply additional complexity that can excite the plant dynamics and result in undesirable performance. Because of these often unknown dynamical effects in aerospace systems, an emphasis is placed on controller …
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Optimal Control of Multiple Quadrotors for Transporting a Cable Suspended Payload
… control performance for a cable suspended payload with single and two quadrotors based on optimised control techniques. The study utilised optimal controllers, such as the Linear Quadratic Regulator LQR, the Iterative based LQR (ILQR), the Model Predictive Control MPC and the dynamic game …