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This paper investigates the development of an exact constraint parallel robotic arm unit. In addition to the advantages of simple structure and compact size, the six points exactly constrained parallel robotic arm unit is both statically and kinematicaly deterministic, thus is more suitable for precision position application. Theoretical analysis based on the principle of exact constraint is given...
This paper investigates the motion control for a nonholonomic mobile manipulator with the objective of simultaneously controlling the velocity of the mobile base and the motion of the end-effector. Both the reference velocity for the mobile base and the reference trajectory for the end-effector are specified in the task-space. A steering velocity is designed based on the steering system of the mobile...
Paper describes a concentric circular wireless sensor network topology and sensor data retrieving strategy using a mobile sink. A quadcopter acts as a mobile sink. The strategy states how to improve network lifetime by reducing energy consumption of power constrained sensor nodes. It eliminates packet routing and optimizes packet retransmissions by reducing packet error, packet loss and packet collisions...
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