The paper focuses on the problem of trajectory planning of flexible redundant robot manipulators (FRM) in joint space. Compared to irredundant flexible manipulators, FRMs present additional possibilities in trajectory planning due to their kinematics redundancy. A trajectory planning method to minimize vibration of FRMs is presented based on Genetic Algorithms (GAs). Kinematics redundancy is in...

We present two different optimal control problem formulations that can be used to solve various trajectory planning scenarios of an Unmanned Ground Vehicle (UGV). It is less a study of trajectory planning than it is an analysis of the optimal control planning method itself. Numerous issues regarding vehicle modeling, obstacle modeling and computational complexity are discussed. The results and ...

| This paper addresses trajectory planning in a dynamic workspace, i.e. motion planning for a robot subject to dynamic constraints and moving in a workspace with moving obstacles. First is introduced the novel concept of state-time space, i.e. the state space of the robot augmented of the time dimension. Like connguration space which is a tool to formulate path planning problems, state-time spa...

This paper introduces a general planning approach with state trajectory constraints, a language extension that has recently been introduced to PDDL for running the Fifth International Planning Competition in 2006. In our approach PDDL inputs with state trajectory constraints are translated into ordinary (fully instantiated) PDDL. It exploits the automata-based interpretation of the constraints,...

The motions of planar tracked vehicles are govemed by three force and moment equations, but driven by only two independent control variables. The force equation perpendicular to the tracks represents a d y n a m i c nonholonomic constraint which is explicitly dependent on vehicle speed. It couples path planning with trajectory planning, that is, solving for vehicle kinematic motions requires sp...

Vehicle navigation in dynamic environments is an important challenge, especially when the motion of the objects populating the environment is unknown. Traditional motion planning approaches are too slow to be applied in realtime to this domain, hence, new techniques are needed. Recently, iterative planning has emerged as a promising approach. Nevertheless, existing iterative methods do not prov...

this paper presents optimal control method to path planning of mobile robots with flexible joints. dynamic equations are derived and additional kinematic constraints are used to solve the extra dofs arose from base mobility. then with modeling the elasticity at each joint as a linear torsinal spring, the set of equations are formed. the hamiltonian function is formed and the necessary condition...

this research focuses on proposing an optimal trajectory planning and control method of two link rigid-flexible manipulators (tlrfm) for dynamic object manipulation (dom) missions. for the first time, achievement of dom task using a rotating one flexible link robot was taken into account in [20]. the authors do not aim to contribute on either trajectory tracking or vibration control of the end-...

William E. Singhose Georgia Institute of Technology 9.

Support of this work by the NTUA Senator Committee of Basic Research, Programme “Protagoras”, R.C. No. 10, is acknowledged. Abstract− This paper addresses the combined problem of trajectory planning and tracking control for underactuated AUVs moving on the horizontal plane. A reference feasible trajectory for the position and orientation of the AUV is planned so that it is consistent with vehic...