The goal of trajectory planning is to shorten the flight distance as much possible on premise ensuring safety UAV in flight. Therefore, research has broad prospects and great significance. As key technology planning, optimization algorithm increasingly become one focuses scholars at home abroad. dynamic programming characterized by high computational efficiency global planning. In 3D spatial se...

With space technology development, the spatial robotic arm plays an increasingly important role in activities. Spatial arms can effectively replace humans to complete in-orbit service tasks. The trajectory planning is basis of motion. Its merit has essential impact on quality completed operation. research not yet formed a broad framework categorization, so it necessary analyze and deeply summar...

1 IRCCyN: UMR CNRS 6596, Ecole Centrale de Nantes, Université de Nantes, Ecole des Mines de Nantes Abstract— Presented in this paper is the kinematic analysis of a symmetrical three-degree-of-freedom planar parallel manipulator. In opposite to serial manipulators, parallel manipulators can admit not only multiple inverse kinematic solutions, but also multiple direct kinematic solutions. This pr...

We describe a three-dimensional user interface for pre-operative neurosurgical planning based on the physical manipulation of familiar real-world objects in free space. Using these passive interface props, neurosurgeons can apply their existing skills to specify spatial relationships in a natural and direct manner. The interface currently employs a head viewing prop, a cuttingplane selection pr...

Trajectory planning is of great importance as many chemical processes normally operate under transient conditions. Many of the available techniques for trajectory optimization can yield trajectories that are unrealistic and not implementable. Furthermore, many transient processes are operated manually, which further reduces the classes of trajectories that are implementable. In this paper, inpu...

Trajectory optimization is a crucial process during the planning phase of a spacecraft landing mission. Once a trajectory is determined, guidance algorithms are created to guide the vehicle along the given trajectory. Because fuel mass is a major driver of the total vehicle mass, and thus mission cost, the objective of most guidance algorithms is to minimize the required fuel consumption. Most ...